JP4939711B2 - Algicidal fungicide - Google Patents
Algicidal fungicide Download PDFInfo
- Publication number
- JP4939711B2 JP4939711B2 JP2001295302A JP2001295302A JP4939711B2 JP 4939711 B2 JP4939711 B2 JP 4939711B2 JP 2001295302 A JP2001295302 A JP 2001295302A JP 2001295302 A JP2001295302 A JP 2001295302A JP 4939711 B2 JP4939711 B2 JP 4939711B2
- Authority
- JP
- Japan
- Prior art keywords
- acid
- algicidal
- seconds
- acid ester
- acetic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000002353 algacidal effect Effects 0.000 title claims description 38
- 239000000417 fungicide Substances 0.000 title claims description 25
- 230000000855 fungicidal effect Effects 0.000 title claims description 23
- 241000206607 Porphyra umbilicalis Species 0.000 claims description 27
- 239000002253 acid Substances 0.000 claims description 26
- 150000003902 salicylic acid esters Chemical class 0.000 claims description 19
- 241001474374 Blennius Species 0.000 claims description 15
- 150000003151 propanoic acid esters Chemical class 0.000 claims description 12
- 230000001954 sterilising effect Effects 0.000 claims description 10
- 238000004659 sterilization and disinfection Methods 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 132
- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical compound COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 description 66
- 235000011054 acetic acid Nutrition 0.000 description 44
- 230000000052 comparative effect Effects 0.000 description 42
- 241000233866 Fungi Species 0.000 description 41
- 229960001047 methyl salicylate Drugs 0.000 description 33
- 239000000243 solution Substances 0.000 description 33
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 32
- 230000000694 effects Effects 0.000 description 32
- QGLVWTFUWVTDEQ-UHFFFAOYSA-N 2-chloro-3-methoxyphenol Chemical compound COC1=CC=CC(O)=C1Cl QGLVWTFUWVTDEQ-UHFFFAOYSA-N 0.000 description 29
- 241000195493 Cryptophyta Species 0.000 description 19
- 241000206761 Bacillariophyta Species 0.000 description 17
- 239000013535 sea water Substances 0.000 description 17
- 239000011780 sodium chloride Substances 0.000 description 16
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 15
- XAOGXQMKWQFZEM-UHFFFAOYSA-N isoamyl propanoate Chemical compound CCC(=O)OCCC(C)C XAOGXQMKWQFZEM-UHFFFAOYSA-N 0.000 description 15
- 239000011259 mixed solution Substances 0.000 description 15
- 241000206608 Pyropia tenera Species 0.000 description 13
- 241000894006 Bacteria Species 0.000 description 10
- 201000010099 disease Diseases 0.000 description 9
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 9
- 150000007524 organic acids Chemical class 0.000 description 9
- 150000007522 mineralic acids Chemical class 0.000 description 8
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 5
- 230000001464 adherent effect Effects 0.000 description 5
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 5
- 235000015165 citric acid Nutrition 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 239000001630 malic acid Substances 0.000 description 5
- 235000011090 malic acid Nutrition 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000009360 aquaculture Methods 0.000 description 4
- 244000144974 aquaculture Species 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 3
- 239000003899 bactericide agent Substances 0.000 description 3
- 239000004310 lactic acid Substances 0.000 description 3
- 235000014655 lactic acid Nutrition 0.000 description 3
- 235000005985 organic acids Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 2
- ZCTQGTTXIYCGGC-UHFFFAOYSA-N Benzyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OCC1=CC=CC=C1 ZCTQGTTXIYCGGC-UHFFFAOYSA-N 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 2
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Diphosphoinositol tetrakisphosphate Chemical compound OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- 235000013373 food additive Nutrition 0.000 description 2
- 239000002778 food additive Substances 0.000 description 2
- 239000003002 pH adjusting agent Substances 0.000 description 2
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N phenyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 235000019260 propionic acid Nutrition 0.000 description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- KPGXRSRHYNQIFN-UHFFFAOYSA-N 2-oxoglutaric acid Chemical compound OC(=O)CCC(=O)C(O)=O KPGXRSRHYNQIFN-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- 208000035859 Drug effect increased Diseases 0.000 description 1
- GYCKQBWUSACYIF-UHFFFAOYSA-N Ethyl salicylate Chemical compound CCOC(=O)C1=CC=CC=C1O GYCKQBWUSACYIF-UHFFFAOYSA-N 0.000 description 1
- PMGCQNGBLMMXEW-UHFFFAOYSA-N Isoamyl salicylate Chemical compound CC(C)CCOC(=O)C1=CC=CC=C1O PMGCQNGBLMMXEW-UHFFFAOYSA-N 0.000 description 1
- RJUFJBKOKNCXHH-UHFFFAOYSA-N Methyl propionate Chemical compound CCC(=O)OC RJUFJBKOKNCXHH-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 229940005667 ethyl salicylate Drugs 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011087 fumaric acid Nutrition 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229960000969 phenyl salicylate Drugs 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- -1 saturated aliphatic monocarboxylic acid Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
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Description
【0001】
【発明の属する技術分野】
本発明は、海苔養殖中に発生する珪藻、アオノリ等の雑藻類及び赤腐れ菌、壺状菌、付着細菌等の病害菌を駆除する殺藻殺菌剤に関する。
【0002】
【従来の技術】
海苔養殖中に、珪藻、アオノリ等の雑藻が海苔葉体又は海苔網に大量に付着すると海苔の生育を阻害し、ひいては海苔が枯死する場合もある。雑藻類の付着が少ない場合も、その海苔原藻を製品にすると緑色の斑点が見え、外観を損ねる為、商品価値が著しく低下する。又、海苔養殖中に赤腐れ菌、壺状菌、付着細菌等の発生により海苔が腐敗してしまうことがある。珪藻等の雑藻類、赤腐れ菌等の雑菌類を駆除する為に海苔養殖時に酸性処理や干出という作業が行われている。
現在では、クエン酸、リンゴ酸等を主成分とする製品の10〜20倍液を用いて雑藻、雑菌の駆除を行っているが、短時間で効果が高い雑藻、雑菌の駆除方法が求められている。
【0003】
今までに、下記に示すような海苔養殖用の処理剤が開示されている。
特開昭50−121425号公報には、「炭素数1ないし4の飽和脂肪族モノカルボン酸、炭素数2ないし4の飽和または不飽和ジカルボン酸、グリコール酸、乳酸、酒石酸、リンゴ酸、クエン酸から成る群から選ばれた有機カルボン酸の一種又は二種以上を有効成分として含有する殺藻剤」とある。この公報には有機酸を用いて雑藻を駆除することが記載してある。
【0004】
特開平11−286407号公報には、「乳酸及び/又は酢酸とパラオキシ安息香酸エステルとを含有することを特徴とするケイソウ駆除用処理剤」が記載されている。この公報には短時間でのケイソウ駆除について記載してあるが、実用的ではない。
【0005】
最近の海苔養殖では、海苔生産者一軒当たりの養殖網の枚数が増加したために、養殖網1枚当たりの処理に要する時間を短くせざるを得なくなり、より短時間で効果のある安全な雑藻、雑菌の駆除方法が求められている。
【0006】
【本発明が解決しようとする課題】
本発明は、海苔自体に害を与えることなく、珪藻、アオノリ等の雑藻類及び赤腐れ菌、壺状菌、付着細菌等の病害菌を短時間に駆除する薬剤を提供することを目的とする。
【0007】
【課題を解決するための手段】
本発明者は、鋭意検討を重ねた結果、酸とサリチル酸エステル及び/又はプロピオン酸エステルを併用することによって珪藻、アオノリ等の雑藻類及び赤腐れ菌、壺状菌、付着細菌等の病害菌を短時間に駆除できることを見い出し、本発明を完成させるに至った。
【0008】
即ち、本発明は、次の通りである。
(1)酸とサリチル酸エステルを主成分とすることを特徴とする海苔養殖用の殺藻殺菌剤(但し、サリチル酸エステルを0.0005〜0.1重量%含有する場合を除く)。
(2)酸とプロピオン酸エステルを主成分とすることを特徴とする海苔養殖用の殺藻殺菌剤。
(3)酸とサリチル酸エステル及びプロピオン酸エステルを主成分とすることを特徴とする海苔養殖用の殺藻殺菌剤。
(4)殺藻殺菌の処理時におけるサリチル酸エステル又はプロピオン酸エステルの濃度が0.01〜0.5w/v%の範囲(但し、サリチル酸エステルを0.0005〜0.1重量%含有する場合を除く)であることを特徴とする(1)〜(3)の何れか一つに記載の海苔養殖用の殺藻殺菌剤。
(5)殺藻殺菌の処理時における酸濃度が0.01〜0.5w/v%の範囲であることを特徴とする(1)〜(4)の何れか一つに記載の海苔養殖用の殺藻殺菌剤。
(6)殺藻殺菌の処理時におけるpHが1.5〜2.5の範囲であることを特徴とする(1)〜(5)の何れか一つに記載の海苔養殖用の殺藻殺菌剤。
(7)殺藻殺菌の処理時に食塩を0.5〜10.0w/v%となるように添加することを特徴とする(1)〜(6)の何れか一つに記載の海苔養殖用の殺藻殺菌剤。
【0009】
【発明の実施の形態】
以下、本発明の実施の形態を詳しく説明する。
本発明の殺藻殺菌剤は、殺藻殺菌の処理時に海水又は水に希釈、添加、或いはそのまま使用され、海苔養殖時に発生する雑藻、病害の駆除予防を行うものであり、酸とサリチル酸エステル及び/又はプロピオン酸エステルを主成分とする。
【0010】
本発明の殺藻殺菌剤は、殺藻殺菌の処理時或いは使用時に海水又は水などで希釈して使用される。その希釈倍率は、好ましくは50〜500倍であるが、これに限るものではなく、その製剤としての使用態様に応じて倍率を決めることができる。また、本発明の殺藻殺菌剤は、殺藻殺菌の処理時に添加して使用される。殺藻殺菌剤を成分ごとに小分け包装した製剤等として提供されるときなどを一例として挙げることができ、船等の処理槽等に殺藻殺菌剤の成分を直接添加する場合等である。更に、施設が整っていれば、殺藻殺菌剤の貯留タンクから船等の処理槽等にそのまま供給して使用しても良い。
【0011】
従来は、雑藻及び病害を駆除するためにクエン酸、リンゴ酸等を40〜80%の範囲で含有する製品を100〜200倍希釈液にて10〜30分の処理を行っていた。この場合、海苔網を取り外して処理を行うため時間と手間がかかりすぎるという問題がある。
現在では、養殖規模の拡大により、海苔網を固定したまま、潜り船を潜らせる方法が採用されている。この方法では120秒以下の処理を行う短時間処理が望まれている。そのため、クエン酸、リンゴ酸等を主成分とする製品を10〜20倍液(酸濃度の2〜8%濃度)にて使用するようになってきている。しかし、雑藻及び病害の駆除効果は不十分である。
【0012】
実際に、後述する実施例より、酸単独では効果は高くならないが、酸とサリチル酸エステル及び/又はプロピオン酸エステルを併用することによって雑藻及び病害の駆除効果が高くなることが分かった。
【0013】
本発明に用いる酸の内容は、特に限定されるものではないが有機酸としては、クエン酸、リンゴ酸、酒石酸、乳酸、プロピオン酸、フマル酸、コハク酸、酢酸、グルコン酸、アジピン酸、フィチン酸、ケトグルタル酸、イタコン酸等を挙げることができ、無機酸としては、リン酸、塩酸、硫酸、硝酸等の酸を挙げることができる。
本発明の酸はこれらの酸の少なくとも1種類以上から成り立つ。
【0014】
本発明に用いられるサリチル酸エステルとしては、何ら限定されるものではないが、食品添加物であるサリチル酸メチルが好ましく、その他サリチル酸イソアミル、サリチル酸エチル、サリチル酸フェニル、サリチル酸ベンジルが挙げられる。 また、殺藻殺菌の処理時にはこれらを2種以上併用しても良い。
【0015】
本発明に用いられるプロピオン酸エステルとしては、特に限定されるものではないが、食品添加物であるプロピオン酸イソアミル、プロピオン酸エチル、プロピオン酸ベンジルが好ましく、その他プロピオン酸アミル、プロピオン酸ビニル、プロピオン酸ブチル、プロピオン酸メチルが挙げられる。
また、殺藻殺菌の処理時にはこれらを2種以上併用しても良い。
【0016】
本発明の殺藻殺菌剤は、その殺藻殺菌の処理時における酸濃度が0.01〜0.5W/V%の範囲であり、サリチル酸エステル濃度が0.01〜0.5W/V%、プロピオン酸エステル濃度が0.01〜0.5W/V%の範囲であることが望ましい。酸濃度が0.01W/V%を下回ると効果が出にくく、その濃度が0.5W/V%を上回ると健全な海苔も傷む場合がある。また、サリチル酸エステルおよびプロピオン酸エステルの濃度は特に、0.01〜0.1W/V%の範囲であることが好ましい。その濃度が0.01W/V%を下回ると効果が出にくく、逆に濃度が0.5W/V%を上回ると健全な海苔も傷む場合がある。
【0017】
本発明の殺藻殺菌剤は、殺藻殺菌の処理時においてpHが1.5〜2.5になるように調整することが好ましい。
pH調整剤としては有機酸、無機酸のいずれでも良く、pHを1.5〜2.5に調整することで雑藻類、病害の駆除効果が高くなると共に海苔への傷害を抑制することができる。
【0018】
本発明の殺藻殺菌剤は、その殺藻殺菌の処理時に無機塩類を添加することが好ましい。
殺藻殺菌剤に無機塩類を添加使用すると、雑藻類、病害の駆除効果が高くなると共に処理時の海苔への傷害を抑制することができる。又、処理時に無機塩類を添加すると海苔が赤く変色するので目視により処理効果の確認が容易になる。特に添加する無機塩類の量は0.5〜10.0%が好ましい。
【0019】
また、本発明の殺藻殺菌剤には、必要により肥料成分として、アミノ酸、塩安、硝酸ソーダ、硝安、硝酸カリウム、リン酸ソーダ、燐安、リン酸カリウム、硫安、糖類等を添加することもできる。
【0020】
本発明の殺藻殺菌剤は、酸成分液にサリチル酸エステル及び/又はプロピオン酸エステル成分を溶解した1液型製剤でも、酸成分とサリチル酸エステル及び/又はプロピオン酸エステル成分を各々別に製剤化し処理時に混合又は海水(又は水)に直接それぞれを添加して使用する2液型であっても良い。又、本製剤は中和した中性の製剤でも酸性の製剤でも良い。
【0021】
【実施例】
次に、本発明を実施例及び比較例により更に詳述する。
【0022】
[試験1:実施例1〜13及び比較例1〜14]
表1に示した有機酸及び無機酸を各々0.3W/V%とサリチル酸メチルを0.05W/V%になるように溶解し調整した。赤腐れ菌に感染した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
2日後に赤腐れ菌の駆除効果を顕微鏡にて調査した。比較例として表1に示した有機酸及び無機酸の0.3W/V%のみ、サリチル酸メチル0.05W/V%のみを調整して用いた。結果を表1に示す。
【0023】
【表1】
【0024】
上記表1の結果から明らかなように、有機酸及び無機酸単独では比較例1〜13に示すように効果が弱く、サリチル酸メチル単独では比較例14に示すように効果が認められなかった。しかし、有機酸又は無機酸とサリチル酸メチルを併用すると実施例1〜13に示したように赤腐れ菌の駆除効果が高くなった。
【0025】
[試験2:実施例14〜26及び比較例15]
表1に示した有機酸及び無機酸を各々0.3W/V%とプロピオン酸ベンジルを0.05W/V%になるように溶解し調整した。赤腐れ菌に感染した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
2日後に赤腐れ菌の駆除効果を顕微鏡にて調査した。比較例としてプロピオン酸ベンジル0.05W/V%のみを調整して用いた。結果を表2に示す。
【0026】
【表2】
【0027】
上記表2の結果から明らかなように、比較例15に示すようにプロピオン酸ベンジル単独では効果が弱かった。しかし、有機酸又は無機酸とプロピオン酸ベンジルを併用すると実施例14〜26に示したように赤腐れ菌の駆除効果が高くなった。
【0028】
[試験3:実施例27〜30及び比較例16]
酢酸を0.3、0.5W/V%及びサリチル酸メチルを0.5、0.1、0.01W/V%になるように溶解し調整した。赤腐れ菌に感染した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
2日後に赤腐れ菌の駆除効果を顕微鏡にて調査した。比較例として酢酸0.3W/V%及びサリチル酸メチル0.6W/V%を含む混液を用いた。結果を表3に示す。
【0029】
【表3】
【0030】
上記表3の結果から、実施例27〜30に示したように酢酸とサリチル酸メチルを併用した場合、サリチル酸メチルの使用量に伴い赤腐れ菌の駆除効果が高くなることが分かった。また、サリチル酸メチル濃度が0.5W/V%以上の場合は比較例16に示したように海苔に傷害が早く発生することが分かった。
【0031】
[試験4:実施例31〜34及び比較例17]
酢酸を0.3、0.5W/V%及びプロピオン酸ベンジルを0.5、0.1、0.01W/V%になるように溶解し調整した。赤腐れ菌に感染した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
2日後に赤腐れ菌の駆除効果を顕微鏡にて調査した。比較例として酢酸0.3W/V%及びプロピオン酸ベンジル0.6W/V%を含む混液を用いた。結果を表4に示す。
【0032】
【表4】
【0033】
上記表4の結果から、実施例31〜34に示したように酢酸とプロピオン酸ベンジルを併用した場合、プロピオン酸ベンジルの使用量に伴って効果が高くなることが分かった。また、プロピオン酸ベンジル濃度が0.5W/V%以上の場合は比較例17に示したように海苔に傷害が早く発生することが分かった。
【0034】
[試験5:実施例35〜40]
酢酸を0.2W/V%及びサリチル酸メチルを0.5、0.3W/V%になるように調整した溶液と、その液にpH調整剤として塩酸を用いpH2.5及び1.5に調整した溶液を用い、赤腐れ菌に感染した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
2日後に赤腐れ菌の駆除効果を顕微鏡にて調査した。結果を表5に示す。
【0035】
【表5】
【0036】
表5の結果から、処理液のpHの値を3以下、特に2.5以下と低くすれば、更に短時間で赤腐れ菌を駆除することができ、また海苔が傷害を起こすまでの時間も長くなることが分かった。
【0037】
[試験6:実施例41〜43及び比較例18、19]
酢酸を0.3W/V%及びサリチル酸メチルを0.5、0.1、0.01W/V%になるように溶解し調整した。壺状菌に感染した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
2日後に壺状菌の駆除効果を顕微鏡にて調査した。比較例として酢酸0.3W/V%のみ、サリチル酸メチル0.5W/V%のみの液を調整して用いた。結果を表6に示す。
【0038】
【表6】
【0039】
上記表6の結果から、酢酸単独、サリチル酸メチル単独では比較例18、19に示したように壺状菌を駆除できないが、酢酸とサリチル酸メチルを併用することで実施例41〜43に示したように壺状菌の駆除効果が高くなることが分かった。
【0040】
[試験7:実施例44〜46及び比較例20、21]
酢酸を0.3W/V%及びプロピオン酸ベンジルを0.5、0.1、0.01W/V%になるように溶解し調整した。壺状菌に感染した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
2日後に壺状菌の駆除効果を顕微鏡にて調査した。比較例として酢酸0.3W/V%のみ、プロピオン酸ベンジル0.5W/V%のみの液を調整して用いた。
結果を表7に示す。
【0041】
【表7】
【0042】
上記表7の結果から、酢酸単独、プロピオン酸ベンジル単独では比較例20、21に示したように壺状菌を駆除できないが、酢酸とプロピオン酸ベンジルを併用することで実施例44〜46に示したように壺状菌の駆除効果が高くなることが分かった。
【0043】
[試験8:実施例47〜49及び比較例22、23]
酢酸を0.3W/V%及びサリチル酸メチルを0.5、0.1、0.01W/V%になるように溶解し調整した。珪藻の付着した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
数時間後に珪藻の駆除効果を顕微鏡にて調査した。比較例として酢酸0.3W/V%のみ、サリチル酸メチル0.5W/V%のみ液を調整して用いた。結果を表8に示す。
【0044】
【表8】
【0045】
上記表8の結果から、酢酸単独、サリチル酸メチル単独では比較例22、23に示したように珪藻を駆除できないが、酢酸とサリチル酸メチルを併用することで実施例47〜49に示したように珪藻の駆除効果が高くなることが分かった。
【0046】
[試験9:実施例50〜52及び比較例24、25]
酢酸を0.3W/V%及びプロピオン酸ベンジルを0.5、0.1、0.01W/V%になるように溶解し調整した。珪藻の付着した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
数時間後に珪藻の駆除効果を顕微鏡にて調査した。比較例として酢酸0.3W/V%のみ、プロピオン酸ベンジル0.5W/V%のみの液を調整して用いた。
結果を表9に示す。
【0047】
【表9】
【0048】
上記表9の結果から、酢酸単独、プロピオン酸ベンジル単独では比較例24、25に示したように珪藻を駆除できないが、酢酸とプロピオン酸ベンジルを併用することで実施例50〜52に示したように珪藻の駆除効果が高くなることが分かった。
【0049】
[試験10:実施例53〜57及び比較例26〜28]
酢酸を0.3W/V%及びサリチル酸メチルを0.1W/V%になるように調整し、その液に食塩を1、3、5、10W/V%添加した溶液を用い、赤腐れ菌に感染した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
2日後に赤腐れ菌の駆除効果を顕微鏡にて調査した。比較例として酢酸0.3W/V%及び食塩5W/V%を含む混液、サリチル酸メチル0.1W/V%及び食塩5W/V%を含む混液、食塩5W/V%のみの液を調整して用いた。結果を表10に示す。
【0050】
【表10】
【0051】
上記表10の結果から、酢酸と食塩の混液では比較例26に示すように効果が弱く、サリチル酸メチルと食塩の混液及び食塩のみの液では比較例27及び28に示したように赤腐れ菌を駆除できないが、酢酸とサリチル酸メチルの混液に食塩を添加すると実施例53〜56に示したように赤腐れ菌の駆除時間が短縮され、且つ海苔が傷害を起こすまでの時間が長くなることが分かった。
【0052】
[試験11:実施例58〜62及び比較例29〜31]
酢酸を0.3W/V%及びプロピオン酸ベンジルを0.1W/V%になるように溶解し、その液に食塩を1、3、5、10W/V%添加した溶液を用い、珪藻が付着した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
数時間後に珪藻の駆除効果を顕微鏡にて調査した。比較例として酢酸0.3W/V%及び食塩5W/V%を含む混液、プロピオン酸ベンジル0.5W/V%及び食塩5W/V%を含む混液、食塩のみの液を調整して用いた。結果を表11に示す。
【0053】
【表11】
【0054】
上記表11の結果から、酢酸と食塩の混液、プロピオン酸ベンジルと食塩の混液及び食塩のみの液では比較例29、30及び31に示したように珪藻を駆除できないが、酢酸とプロピオン酸ベンジルの混液に食塩を添加すると実施例58〜61に示したように珪藻の駆除時間が短縮され、且つ海苔が傷害を起こすまでの時間が長くなることが分かった。
【0055】
[試験12:実施例63〜65及び比較例32、33]
酢酸を0.01、0.02、0.03W/V%及びサリチル酸メチルを0.01W/V%になるように調整し、赤腐れ菌に感染した海苔葉体をこの調整液で1分から20分まで1分間隔で処理した後、滅菌海水にて洗浄した。
2日後に赤腐れ菌の駆除効果を顕微鏡にて調査した。比較例として酢酸0.03W/V%、サリチル酸メチル0.01W/V%の液を調整して用いた。結果を表12に示す。
【0056】
【表12】
【0057】
上記表12の結果から、酢酸単独、サリチル酸メチル単独では比較例32、33に示したように、20分という長い処理時間でも駆除できないが、低濃度でも酢酸とサリチル酸メチルを併用すると実施例63〜65に示したように時間はかかるが駆除できることが分かった。
【0058】
[試験13:実施例66及び比較例34、35]
酢酸0.03W/V%、サリチル酸メチル0.02W/V%、プロピオン酸ベンジル0.02W/V%及びプロピオン酸イソアミル0.02W/V%になるように調整し、赤腐れ菌に感染した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
2日後に赤腐れ菌の駆除効果を顕微鏡にて調査した。比較例として酢酸0.03W/V%のみ、サリチル酸メチル0.02W/V%、プロピオン酸ベンジル0.02W/V%及びプロピオン酸イソアミル0.02W/V%を含む混液を調整して用いた。表中の濃度の単位はW/V%である。
結果を表13に示す。
【0059】
【表13】
【0060】
上記表13の結果から、酢酸単独、サリチル酸メチル、プロピオン酸ベンジル及びプロピオン酸イソアミルの混液では比較例34、35に示したように、赤腐れ菌を駆除できないが、酢酸とサリチル酸メチル、プロピオン酸ベンジル及びプロピオン酸イソアミルを併用すると実施例66に示したように赤腐れ菌を駆除できることが分かった。
【0061】
[試験14:実施例67及び比較例36、37]
酢酸0.03W/V%、サリチル酸メチル0.02W/V%、プロピオン酸ベンジル0.02W/V%及びプロピオン酸イソアミル0.02W/V%になるように調整し、珪藻の付着した海苔葉体をこの調整液で5秒から180秒まで5秒間隔で処理した後、滅菌海水にて洗浄した。
数時間後に珪藻の駆除効果を顕微鏡にて調査した。比較例として酢酸0.03W/V%のみ、サリチル酸メチル0.02W/V%、プロピオン酸ベンジル0.02W/V%及びプロピオン酸イソアミル0.02W/V%を含む混液を調整して用いた。表中の濃度の単位はW/V%である。
結果を表14に示す。
【0062】
【表14】
【0063】
上記表14の結果から、酢酸単独、サリチル酸メチル、プロピオン酸ベンジル及びプロピオン酸イソアミルの混液では比較例36、37に示したように、珪藻を駆除できないが、酢酸とサリチル酸メチル、プロピオン酸ベンジル及びプロピオン酸イソアミルを併用すると実施例67に示したように珪藻を駆除できることが分かった。
【発明の効果】
本発明は、海苔養殖時に発生する雑藻・病害の駆除予防を行う殺藻殺菌剤であって、酸とサリチル酸エステル及び/又はプロピオン酸エステルを主成分とすることにより、珪藻、アオノリ等の雑藻類及び赤腐れ菌、壺状菌、付着細菌等の病害菌を駆除することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an algicidal bactericidal agent that combats diatoms such as diatoms and aonori, and disease-causing fungi such as red rot fungi, fungi, and adherent bacteria that occur during nori culture.
[0002]
[Prior art]
During the laver culture, if algae such as diatoms and aonori adhere to the laver leaf body or laver net in large quantities, the growth of the laver may be inhibited, and the laver may eventually die. Even if there is little adherence of miscellaneous algae, if the nori seaweed is used as a product, green spots will be seen and the appearance will be impaired, so the commercial value will be significantly reduced. In addition, nori may rot due to the occurrence of red rot fungi, fungi, adherent bacteria, etc. during nori culture. In order to eliminate miscellaneous algae such as diatoms and miscellaneous fungi such as red rot fungi, operations such as acid treatment and drying are carried out during nori cultivation.
At present, we are removing 10 to 20 times solution of products mainly composed of citric acid, malic acid, etc., but we are able to control miscellaneous algae and bacteria. It has been demanded.
[0003]
Until now, the treatment agent for nori culture as shown below has been disclosed.
Japanese Patent Application Laid-Open No. 50-121425 discloses “saturated aliphatic monocarboxylic acid having 1 to 4 carbon atoms, saturated or unsaturated dicarboxylic acid having 2 to 4 carbon atoms, glycolic acid, lactic acid, tartaric acid, malic acid, and citric acid. An algicidal agent containing one or more organic carboxylic acids selected from the group consisting of as active ingredients. This publication describes the removal of miscellaneous algae using organic acids.
[0004]
Japanese Patent Application Laid-Open No. 11-286407 describes “a treatment agent for controlling diatoms characterized by containing lactic acid and / or acetic acid and a paraoxybenzoic acid ester”. This publication describes diatom control in a short time, but is not practical.
[0005]
In recent seaweed aquaculture, the number of aquaculture nets per nori producer increased, so the time required for processing per aquaculture net had to be shortened, and it was effective and safe in a shorter time. There is a need for methods for controlling algae and germs.
[0006]
[Problems to be solved by the present invention]
It is an object of the present invention to provide a drug that can quickly remove harmful algae such as diatoms and aonori and red rot fungi, fungi, and adherent bacteria without causing harm to the seaweed itself. .
[0007]
[Means for Solving the Problems]
As a result of intensive studies, the inventor of the present invention used a combination of acid and salicylic acid ester and / or propionic acid ester to eliminate diatoms, aonori and other mixed algae, and red rot fungi, fungi and adherent bacteria. It was found that it can be removed in a short time, and the present invention has been completed.
[0008]
That is, the present invention is as follows.
(1) An algicidal fungicide for seaweed culture characterized by comprising an acid and a salicylic acid ester as main components (except for the case of containing 0.0005 to 0.1% by weight of a salicylic acid ester) .
(2) An algicidal fungicide for seaweed culture characterized by comprising an acid and a propionic acid ester as main components.
(3) An algicidal fungicide for seaweed culture characterized by comprising acid, salicylic acid ester and propionic acid ester as main components.
(4) The concentration of salicylic acid ester or propionic acid ester in the treatment of algicidal sterilization is in the range of 0.01 to 0.5 w / v% (however, the case where 0.0005 to 0.1% by weight of salicylic acid ester is contained) characterized in that a excluded) (1) to algicidal fungicides for seaweed farming according to any one of (3).
(5) The acid concentration in the range of 0.01 to 0.5 w / v% during the treatment of algicidal sterilization is characterized in that it is used for nori culture as described in any one of (1) to (4) Algae fungicide.
(6) Algae sterilization for laver culture as described in any one of (1) to (5), wherein the pH during the treatment of sterilization is 1.5 to 2.5. Agent.
(7) Noriculture is added according to any one of (1) to (6), wherein salt is added so as to be 0.5 to 10.0 w / v% during the treatment of algicidal sterilization Algae fungicide.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
The algicidal fungicide of the present invention is used to dilute, add to or use as it is in seawater or water during the processing of algal killing, and to eliminate and eliminate miscellaneous algae and diseases that occur during laver culture. Acid and salicylic acid ester And / or propionate as a main component.
[0010]
The algicidal fungicide of the present invention is used after being diluted with seawater or water at the time of treatment or use of the algal killing. The dilution rate is preferably 50 to 500 times, but is not limited thereto, and the rate can be determined according to the mode of use as the preparation. Further, the algicidal fungicide of the present invention is used by adding at the time of the algal killing process. An example is when the algaecidal fungicide is provided as a preparation or the like in which the components are packaged by component, such as when the components of the algaecidal fungicide are directly added to a treatment tank or the like of a ship. Furthermore, as long as the facilities are in place, they may be supplied as they are from a storage tank for algicidal fungicides to a processing tank such as a ship.
[0011]
Conventionally, in order to control miscellaneous algae and diseases, a product containing citric acid, malic acid and the like in a range of 40 to 80% is processed in a diluted solution 100 to 200 times for 10 to 30 minutes. In this case, there is a problem that it takes too much time and labor to remove the laver net and perform the processing.
At present, due to the expansion of the aquaculture scale, a method of diving a submerged ship while keeping the laver net fixed is used. In this method, short-time processing that performs processing of 120 seconds or less is desired. For this reason, products containing citric acid, malic acid and the like as main components are used in 10 to 20 times solution (2 to 8% concentration of acid concentration). However, the effect of eliminating miscellaneous algae and diseases is insufficient.
[0012]
Actually, from the examples described later, it was found that the effect of acid alone is not enhanced, but the effect of controlling miscellaneous algae and diseases is enhanced by the combined use of acid and salicylic acid ester and / or propionic acid ester.
[0013]
Although the content of the acid used in the present invention is not particularly limited, examples of organic acids include citric acid, malic acid, tartaric acid, lactic acid, propionic acid, fumaric acid, succinic acid, acetic acid, gluconic acid, adipic acid, and phytin. An acid, ketoglutaric acid, itaconic acid, etc. can be mentioned, As an inorganic acid, acids, such as phosphoric acid, hydrochloric acid, a sulfuric acid, nitric acid, can be mentioned.
The acid of the present invention comprises at least one of these acids.
[0014]
The salicylic acid ester used in the present invention is not limited in any way, but is preferably a food additive, methyl salicylate, and other examples include isoamyl salicylate, ethyl salicylate, phenyl salicylate, and benzyl salicylate. Two or more of these may be used in combination during the algaecidal treatment.
[0015]
The propionate used in the present invention is not particularly limited, but is preferably a food additive such as isoamyl propionate, ethyl propionate, benzyl propionate, and other amyl propionate, vinyl propionate, propionic acid. Examples include butyl and methyl propionate.
Two or more of these may be used in combination during the algaecidal treatment.
[0016]
The algicidal bactericidal agent of the present invention has an acid concentration in the range of 0.01 to 0.5 W / V% during the treatment of the algicidal sterilization, and a salicylic acid ester concentration of 0.01 to 0.5 W / V%, It is desirable that the propionate concentration is in the range of 0.01 to 0.5 W / V%. When the acid concentration is less than 0.01 W / V%, the effect is difficult to be obtained, and when the acid concentration is more than 0.5 W / V%, healthy laver may be damaged. The concentration of salicylic acid ester and propionic acid ester is particularly preferably in the range of 0.01 to 0.1 W / V%. If the concentration is less than 0.01 W / V%, it is difficult to obtain an effect. Conversely, if the concentration is more than 0.5 W / V%, healthy laver may be damaged.
[0017]
The algicidal fungicide of the present invention is preferably adjusted so that the pH is 1.5 to 2.5 during the algal killing process.
As the pH adjuster, either an organic acid or an inorganic acid may be used. By adjusting the pH to 1.5 to 2.5, the effect of eliminating miscellaneous algae and diseases can be enhanced and the damage to the laver can be suppressed. .
[0018]
It is preferable to add inorganic salts to the algicidal fungicide of the present invention during the processing of the algicidal fungicide.
When an inorganic salt is added to the algicidal fungicide, the effects of eliminating miscellaneous algae and diseases are enhanced, and damage to the laver during treatment can be suppressed. Further, when inorganic salts are added at the time of treatment, the seaweed turns red, so it is easy to visually confirm the treatment effect. In particular, the amount of inorganic salts added is preferably 0.5 to 10.0%.
[0019]
In addition, if necessary, amino acid, salt, sodium nitrate, ammonium nitrate, ammonium nitrate, potassium nitrate, sodium phosphate, phosphoric acid, potassium phosphate, ammonium sulfate, saccharides, etc. may be added to the algicidal fungicide of the present invention. it can.
[0020]
The algicidal bactericidal agent of the present invention is a one-part preparation in which a salicylic acid ester and / or a propionic acid ester component is dissolved in an acid component liquid, and the acid component and the salicylic acid ester and / or propionic acid ester component are separately formulated and processed. It may be a two-pack type that is used by mixing or directly adding to seawater (or water). The preparation may be a neutralized neutral preparation or an acidic preparation.
[0021]
【Example】
Next, the present invention will be described in more detail with reference to examples and comparative examples.
[0022]
[Test 1: Examples 1 to 13 and Comparative Examples 1 to 14]
The organic acid and inorganic acid shown in Table 1 were respectively dissolved and adjusted to 0.3 W / V% and methyl salicylate to 0.05 W / V%. A laver leaf body infected with red rot fungus was treated with this adjustment solution at intervals of 5 seconds from 5 seconds to 180 seconds, and then washed with sterile seawater.
Two days later, the effect of controlling red rot fungi was examined with a microscope. As comparative examples, only 0.3 W / V% of organic acids and inorganic acids shown in Table 1 and only 0.05 W / V% of methyl salicylate were used. The results are shown in Table 1.
[0023]
[Table 1]
[0024]
As is clear from the results of Table 1 above, the effects of organic and inorganic acids alone were weak as shown in Comparative Examples 1 to 13, and methyl salicylate alone was not effective as shown in Comparative Example 14. However, when an organic acid or inorganic acid and methyl salicylate were used in combination, the effect of controlling red rot fungi increased as shown in Examples 1-13.
[0025]
[Test 2: Examples 14 to 26 and Comparative Example 15]
The organic acid and inorganic acid shown in Table 1 were each dissolved and adjusted to 0.3 W / V% and benzyl propionate to 0.05 W / V%. A laver leaf body infected with red rot fungus was treated with this adjustment solution at intervals of 5 seconds from 5 seconds to 180 seconds, and then washed with sterile seawater.
Two days later, the effect of controlling red rot fungi was examined with a microscope. As a comparative example, only benzyl propionate 0.05 W / V% was prepared and used. The results are shown in Table 2.
[0026]
[Table 2]
[0027]
As is clear from the results in Table 2 above, as shown in Comparative Example 15, benzyl propionate alone had a weak effect. However, when an organic acid or inorganic acid and benzyl propionate were used in combination, the effect of controlling red rot fungi increased as shown in Examples 14 to 26.
[0028]
[Test 3: Examples 27 to 30 and Comparative Example 16]
Acetic acid was dissolved and adjusted to 0.3, 0.5 W / V% and methyl salicylate to 0.5, 0.1, 0.01 W / V%. A laver leaf body infected with red rot fungus was treated with this adjustment solution at intervals of 5 seconds from 5 seconds to 180 seconds, and then washed with sterile seawater.
Two days later, the effect of controlling red rot fungi was examined with a microscope. As a comparative example, a mixed solution containing 0.3 W / V% acetic acid and 0.6 W / V% methyl salicylate was used. The results are shown in Table 3.
[0029]
[Table 3]
[0030]
From the results of Table 3 above, it was found that when acetic acid and methyl salicylate were used in combination as shown in Examples 27 to 30, the effect of controlling red rot fungi increased with the amount of methyl salicylate used. Moreover, when the methyl salicylate concentration was 0.5 W / V% or more, as shown in Comparative Example 16, it was found that damage to seaweed occurred early.
[0031]
[Test 4: Examples 31 to 34 and Comparative Example 17]
Acetic acid was dissolved and adjusted to 0.3, 0.5 W / V% and benzyl propionate to 0.5, 0.1, 0.01 W / V%. A laver leaf body infected with red rot fungus was treated with this adjustment solution at intervals of 5 seconds from 5 seconds to 180 seconds, and then washed with sterile seawater.
Two days later, the effect of controlling red rot fungi was examined with a microscope. As a comparative example, a mixed solution containing 0.3 W / V% acetic acid and 0.6 W / V% benzyl propionate was used. The results are shown in Table 4.
[0032]
[Table 4]
[0033]
From the results of Table 4 above, it was found that when acetic acid and benzyl propionate were used in combination as shown in Examples 31 to 34, the effect increased with the amount of benzyl propionate used. Moreover, when the benzyl propionate density | concentration was 0.5 W / V% or more, as shown in the comparative example 17, it turned out that an injury generate | occur | produces early in nori.
[0034]
[Test 5: Examples 35 to 40]
A solution prepared by adjusting acetic acid to 0.2 W / V% and methyl salicylate to 0.5 and 0.3 W / V%, and adjusting the pH to 2.5 and 1.5 using hydrochloric acid as a pH adjuster. Using this solution, laver leaf bodies infected with red rot fungi were treated with this adjustment solution from 5 seconds to 180 seconds at intervals of 5 seconds, and then washed with sterilized seawater.
Two days later, the effect of controlling red rot fungi was examined with a microscope. The results are shown in Table 5.
[0035]
[Table 5]
[0036]
From the results of Table 5, if the pH value of the treatment solution is lowered to 3 or less, particularly 2.5 or less, red rot fungi can be removed in a shorter time, and the time until nori is damaged is also increased. It turns out to be long.
[0037]
[Test 6: Examples 41 to 43 and Comparative Examples 18 and 19]
Acetic acid was dissolved and adjusted to 0.3 W / V% and methyl salicylate to 0.5, 0.1, and 0.01 W / V%. A laver leaf body infected with rod-shaped fungi was treated with this adjustment solution at intervals of 5 seconds from 5 seconds to 180 seconds, and then washed with sterile seawater.
Two days later, the control effect of rod-shaped fungi was examined with a microscope. As a comparative example, a solution containing only 0.3 W / V% acetic acid and 0.5 W / V% methyl salicylate was prepared and used. The results are shown in Table 6.
[0038]
[Table 6]
[0039]
From the results of Table 6 above, acetic acid alone and methyl salicylate alone cannot control rod-shaped bacteria as shown in Comparative Examples 18 and 19, but as shown in Examples 41 to 43 by using acetic acid and methyl salicylate together. It was found that the effect of controlling rod-shaped fungi is increased.
[0040]
[Test 7: Examples 44 to 46 and Comparative Examples 20 and 21]
Acetic acid was dissolved and adjusted to 0.3 W / V% and benzyl propionate to 0.5, 0.1, and 0.01 W / V%. A laver leaf body infected with rod-shaped fungi was treated with this adjustment solution at intervals of 5 seconds from 5 seconds to 180 seconds, and then washed with sterile seawater.
Two days later, the control effect of rod-shaped fungi was examined with a microscope. As a comparative example, a solution containing only 0.3 W / V% acetic acid and 0.5 W / V% benzyl propionate was prepared and used.
The results are shown in Table 7.
[0041]
[Table 7]
[0042]
From the results of Table 7 above, acetic acid alone and benzyl propionate alone cannot control rod-shaped fungi as shown in Comparative Examples 20 and 21, but it is shown in Examples 44 to 46 by using acetic acid and benzyl propionate in combination. Thus, it was found that the effect of controlling rod-shaped fungi increases.
[0043]
[Test 8: Examples 47 to 49 and Comparative Examples 22 and 23]
Acetic acid was dissolved and adjusted to 0.3 W / V% and methyl salicylate to 0.5, 0.1, and 0.01 W / V%. The laver leaf body to which diatoms adhered was treated with this adjustment solution at intervals of 5 seconds from 5 seconds to 180 seconds, and then washed with sterile seawater.
Several hours later, the diatom control effect was examined with a microscope. As comparative examples, only 0.3 W / V% acetic acid and 0.5 W / V% methyl salicylate were prepared and used. The results are shown in Table 8.
[0044]
[Table 8]
[0045]
From the results of Table 8 above, acetic acid alone and methyl salicylate alone cannot control diatoms as shown in Comparative Examples 22 and 23, but diatoms as shown in Examples 47 to 49 by using acetic acid and methyl salicylate together. It turned out that the removal effect of becomes high.
[0046]
[Test 9: Examples 50 to 52 and Comparative Examples 24 and 25]
Acetic acid was dissolved and adjusted to 0.3 W / V% and benzyl propionate to 0.5, 0.1, and 0.01 W / V%. The laver leaf body to which diatoms adhered was treated with this adjustment solution at intervals of 5 seconds from 5 seconds to 180 seconds, and then washed with sterile seawater.
Several hours later, the diatom control effect was examined with a microscope. As a comparative example, a solution containing only 0.3 W / V% acetic acid and 0.5 W / V% benzyl propionate was prepared and used.
The results are shown in Table 9.
[0047]
[Table 9]
[0048]
From the results in Table 9 above, acetic acid alone and benzyl propionate alone cannot control diatoms as shown in Comparative Examples 24 and 25, but as shown in Examples 50 to 52 by using acetic acid and benzyl propionate in combination. It was found that the diatom control effect is high.
[0049]
[Test 10: Examples 53 to 57 and Comparative Examples 26 to 28]
Adjust the acetic acid to 0.3 W / V% and methyl salicylate to 0.1 W / V%, and use a solution with 1, 3, 5, 10 W / V% sodium chloride added to the solution. Infected laver leaves were treated with this adjustment solution at intervals of 5 seconds from 5 seconds to 180 seconds, and then washed with sterile seawater.
Two days later, the effect of controlling red rot fungi was examined with a microscope. As a comparative example, a mixed solution containing 0.3 W / V% acetic acid and 5 W / V% sodium chloride, a mixed solution containing 0.1 W / V% methyl salicylate and 5 W / V% sodium chloride, and a solution containing only 5 W / V% sodium chloride were prepared. Using. The results are shown in Table 10.
[0050]
[Table 10]
[0051]
From the results of Table 10 above, a mixed solution of acetic acid and sodium chloride is less effective as shown in Comparative Example 26, and a mixed solution of methyl salicylate and sodium chloride and a solution containing only sodium chloride showed red rot bacteria as shown in Comparative Examples 27 and 28. Although it cannot be controlled, adding sodium chloride to a mixed solution of acetic acid and methyl salicylate shortens the time to control red rot bacteria as shown in Examples 53 to 56 and increases the time until the laver is damaged. It was.
[0052]
[Test 11: Examples 58 to 62 and Comparative Examples 29 to 31]
Dissolve acetic acid at 0.3 W / V% and benzyl propionate at 0.1 W / V%, and use a solution with 1, 3, 5, 10 W / V% sodium chloride added to the solution, and diatoms adhere The processed laver leaf body was treated with this adjusting solution from 5 seconds to 180 seconds at intervals of 5 seconds, and then washed with sterilized seawater.
Several hours later, the diatom control effect was examined with a microscope. As comparative examples, a mixed solution containing 0.3 W / V% acetic acid and 5 W / V% sodium chloride, a mixed solution containing 0.5 W / V% benzyl propionate and 5 W / V% sodium chloride, and a solution containing only sodium chloride were prepared and used. The results are shown in Table 11.
[0053]
[Table 11]
[0054]
From the results of Table 11 above, the mixed solution of acetic acid and sodium chloride, the mixed solution of benzyl propionate and sodium chloride, and the solution of sodium chloride alone cannot control diatoms as shown in Comparative Examples 29, 30 and 31, but the acetic acid and benzyl propionate solution. It was found that when sodium chloride was added to the mixed solution, the diatom extermination time was shortened as shown in Examples 58 to 61, and the time until nori was damaged was increased.
[0055]
[Test 12: Examples 63 to 65 and Comparative Examples 32 and 33]
Acetic acid was adjusted to 0.01, 0.02, 0.03 W / V% and methyl salicylate to 0.01 W / V%, and nori leaves infected with red rot fungi were added to this adjusted solution for 1 minute to 20 minutes. After processing at 1 minute intervals, the sample was washed with sterilized seawater.
Two days later, the effect of controlling red rot fungi was examined with a microscope. As a comparative example, a solution of 0.03 W / V% acetic acid and 0.01 W / V% methyl salicylate was prepared and used. The results are shown in Table 12.
[0056]
[Table 12]
[0057]
From the results of Table 12 above, acetic acid alone and methyl salicylate alone cannot be removed even with a long treatment time of 20 minutes, as shown in Comparative Examples 32 and 33. As shown in 65, it took time, but it was found that it can be removed.
[0058]
[Test 13: Example 66 and Comparative Examples 34 and 35]
Seaweed infected with red rot fungus adjusted to 0.03 W / V% acetic acid, 0.02 W / V% methyl salicylate, 0.02 W / V% benzyl propionate and 0.02 W / V% isoamyl propionate The leaves were treated with this adjusting solution from 5 seconds to 180 seconds at intervals of 5 seconds, and then washed with sterilized seawater.
Two days later, the effect of controlling red rot fungi was examined with a microscope. As a comparative example, a mixed solution containing only 0.03 W / V% acetic acid, 0.02 W / V% methyl salicylate, 0.02 W / V% benzyl propionate, and 0.02 W / V% isoamyl propionate was used. The unit of concentration in the table is W / V%.
The results are shown in Table 13.
[0059]
[Table 13]
[0060]
From the results shown in Table 13, the mixed solution of acetic acid alone, methyl salicylate, benzyl propionate and isoamyl propionate cannot eliminate red rot fungi, as shown in Comparative Examples 34 and 35. However, acetic acid, methyl salicylate and benzyl propionate In addition, it was found that red rot bacteria can be controlled as shown in Example 66 when isoamyl propionate is used in combination.
[0061]
[Test 14: Example 67 and Comparative Examples 36 and 37]
Acetic acid 0.03 W / V%, salicylate 0.02 W / V%, propionate benzyl 0.02 W / V% and propionate isoamyl 0.02 W / V% Was treated with this adjusting solution from 5 seconds to 180 seconds at intervals of 5 seconds, and then washed with sterilized seawater.
Several hours later, the diatom control effect was examined with a microscope. As a comparative example, a mixed solution containing only 0.03 W / V% acetic acid, 0.02 W / V% methyl salicylate, 0.02 W / V% benzyl propionate, and 0.02 W / V% isoamyl propionate was used. The unit of concentration in the table is W / V%.
The results are shown in Table 14.
[0062]
[Table 14]
[0063]
From the results of Table 14 above, as shown in Comparative Examples 36 and 37, a mixture of acetic acid alone, methyl salicylate, benzyl propionate and isoamyl propionate cannot control diatoms, but acetic acid and methyl salicylate, benzyl propionate and propion It was found that when isoamyl acid was used in combination, diatoms could be controlled as shown in Example 67.
【Effect of the invention】
The present invention is an algicidal fungicide for controlling and preventing miscellaneous algae and diseases that occur during nori cultivation, and is composed of an acid and a salicylic acid ester and / or propionic acid ester as main components so as to eliminate miscellaneous such as diatoms and aonori. Algae and disease-causing fungi such as red rot fungi, rod-shaped fungi, and adherent bacteria can be controlled.
Claims (7)
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| JP4929992B2 (en) * | 2006-09-19 | 2012-05-09 | 扶桑化学工業株式会社 | Nori processing method and nori work boat |
| CN106688869B (en) * | 2016-12-28 | 2020-11-24 | 江苏省海洋水产研究所 | Method for preventing and treating shell filament yellow spot of porphyra yezoensis and culture device |
| CN112056329B (en) * | 2020-08-28 | 2021-09-07 | 山东省海洋生物研究院 | A kind of seawater microalgae regulating agent and microalgae algal phase regulating method using the regulating agent |
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| JP3121219B2 (en) * | 1994-10-25 | 2000-12-25 | 第一製網株式会社 | Red rot pesticide for cultured seaweed |
| JP3727965B2 (en) * | 1994-12-08 | 2005-12-21 | 第一製網株式会社 | Red rot control agent for cultured seaweed |
| JP3610814B2 (en) * | 1999-03-05 | 2005-01-19 | 扶桑化学工業株式会社 | Algae fungicide for cultured seaweed and method for treating cultured seaweed using the same |
| JP2001122707A (en) * | 1999-08-19 | 2001-05-08 | Daiichi Seimou Co Ltd | Formulation for culturing laver and method for producing the same |
| JP3610912B2 (en) * | 2000-04-27 | 2005-01-19 | 扶桑化学工業株式会社 | Treatment agent for cultured seaweed and treatment method |
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