JPH049765B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to 2-tert-butylimino-3-
Isopropyl-5-phenyl-3,4,5,6-
The present invention relates to a termiticide characterized by containing tetrahydro-2H-1,3,5-thiadiazin-4-one (hereinafter referred to as buprofezin) as an active ingredient. (Conventional technology) Termites are pests that often live in the soil, and they prefer sunny, humid, and relatively warm places. and cause severe damage to buildings. The damage is said to reach tens of billions of yen annually, making prevention and control an extremely important issue. When termite control agents are classified based on their usage, they are broadly divided into wood treatment agents, soil treatment agents, and food poisoning agents.
Until recently, arsenic compounds, which are classified as food poisons, were used in Kyushu, Shikoku, Chugoku, and the southern Kinki region, where termites are controlled. However, since its use has now been banned, weakly effective boron compounds and the termite agent chlordane, which has no food poisoning effect, are used as food poisons. However, since these drugs do not have sufficient efficacy, there has been a strong demand for food poisoning agents with low toxicity and excellent efficacy. (Objective and Structure of the Invention) The present inventors have conducted intensive studies in search of a low-toxicity and highly effective food poison, and have found that buprofezin is a low-toxic termite control agent that can be used not only as a food poison but also as a contact food poison. The present invention was completed by discovering that it is also effective as a drug. Buprofezin is widely used as an insect repellent for rice planthoppers and leafhoppers under the trademark ``Apload,'' but it could not have been predicted based on conventional knowledge that it would be effective against termites. That's true. According to the present invention, a termiticide containing buprofezin as an active ingredient is used in the form of a powder or a wettable powder, and the blending ratio of buprofezin is arbitrarily selected within the range of 1% by weight or more. Examples of the diluent used in the present invention include organic substances such as wood flour, wheat flour, rice flour, pine resin, and cellulose powder, and inorganic substances such as clay, talc, calcium carbonate, diatomaceous earth, and graphite. In the present invention, butyl carbitol, ethyl carbitol, α-
Pinene, terpene oil, rosin, apietic acid, tall oil, ethyl diglycol, butyl p-oxybenzoate, etc. may be added. (Examples and Test Examples) Examples and test examples of the present invention are shown below, but the invention is not particularly limited thereto. Example 1 25 parts of Buplov Engine and 75 parts of clay powder were uniformly mixed to form a powder. Example 2 25 parts of buprofezin and 75 parts of wheat flour are uniformly mixed to make a powder. Example 3 25 parts of buprofezin, 74 parts of clay, and 1 part of ethyl carbitol are uniformly mixed to form a powder. Example 4 10 parts of buprofezin and 90 parts of clay were uniformly mixed to form a powder. Example 5 5 parts of buprofezin and 95 parts of clay were uniformly mixed to form a powder. Example 6 25 parts of buprofezin, 70 parts of diatomaceous earth, and 5 parts of a mixture of polyoxyethylene alkyl phenyl ether and alkylbenzene sulfonate are mixed uniformly to prepare a wettable powder. Test example 1 Anticidal effect of colony inside container PVC container (length 27cm x width 20cm x height 5cm)
A drug was placed in one corner of the inside, a piece of wood as food was placed in the other corner, and moisture-absorbing absorbent cotton for water was placed on the other side. In this container, there are 50 worker ants and 10 soldier ants.
The head of the insect was released, and the top of the container was covered with a vinyl sheet with many small holes for ventilation. The number of knockdowns, number of dead insects, and number of abnormal insects were determined over time. (1 ward double system). The results are shown in Table 1.

【table】

[Table] Test Example 2 Transmission of Insecticidal Efficacy 1.5 ml of water was dropped onto a piece of paper with a diameter of 9 cm in a shear dish, and the worker ants that died in Test Example 1 were mixed with untreated worker ants in a ratio of 1:4. In addition to the ratio, the transmission of insecticidal efficacy was investigated. Table 2 shows the results of the 1st ward trifecta.

[Table] * Feeding damage to filter paper Severe feeding damage around the filter paper
Test example of severe feeding damage over the entire surface of filter paper 3 Anticidal efficacy test Drop 1.5 ml of the drug diluted to the specified concentration onto a 9 cm diameter paper in a shear, and release 30 worker ants and 20 nymphs there for one week. The mortality rate was calculated for each time. The results are shown in Table 3.

[Table] (Effects of the Invention) As mentioned above, the compound of the present invention exhibits a termite control effect with low toxicity and has a transmission property of insecticidal effect, so it can exterminate the colony itself, so it can be used as a termite control agent. It is useful as

Claims (1)

[Claims] 1 2-tertiarybutylimino-3-isopropyl-5-phenyl-3,4,5,6-tetrahydro-2H-1,3,5-thiadiazine-4-
1. A termite control agent characterized by containing On as an active ingredient.