JPH085766B2 - Antifeedant by birds - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to agents that protect crops from feeding by birds.

In agriculture and forestry, the damage of crop seeds and harvests being eaten as a suitable diet for birds has been known for a long time, and in particular has been rapidly increasing in recent years. In agricultural products, seeds such as soybeans, red beans, corn, and wheat are eaten immediately after sowing at the time of germination. Also, new seeds such as paddy rice and sunflower, grapes,
It is often the case that fruits such as watermelons are eaten near harvest, resulting in abandonment and no harvest. These damages are considered to be one of the reasons why the planted area is reduced. Furthermore, after harvest, the grains in storage are often eaten.

Most of the birds that cause these damages are sparrows, pigeons, pheasants, starlings, starlings, starlings, crows, etc., which almost always act as a flock, although they are almost always determined. These birds are omnivorous and are beneficial as they feed pests in the spring and summer, but damage to crops in the early spring and autumn without insects is enormous and preventative measures must be taken without extermination. .

Various methods have been devised to prevent damage to these birds from old times, and various methods such as scarecrow, birdicide, repellent, rooster, and bird of prey model have been adopted, but each has its advantages and disadvantages. Currently, there are very few practical methods for preventing eating.

The taste and smell of birds have traditionally been thought to be dull. However, the present inventors have considered that birds may have physiologically unpleasant tastes and odors, and have studied the feeding repellent effect of various compounds. As a result, they discovered that the bisbenzyldisulfide derivative has a strong antifeedant effect, and established a method for effectively preventing damage to birds by using this compound.

Bisbenzyl sulfide, which is an active ingredient compound of the drug of the present invention, is represented by the following general formula.

In the above formula, X is the same or different and represents a hydrogen atom or a halogen atom.

When X is a halogen atom, it is preferably a chlorine atom or a bromine atom, especially a chlorine atom. Preferably the two X's are the same, although the X's may be different from each other. When two X are halogen atoms,
It is preferred that they are preferably substituted at the substitution position of interest. That is, in the present invention, when X represents a halogen atom, bis (o-, m- or p-halobenzyl sulfide) is preferable, and accordingly, bis (o-,
Most preferred is m- or p-chlorobenzyl sulfide.

Bisbenzyl sulfides are known compounds used as antioxidants and stabilizers in various situations.
The present inventor has completed the present invention by finding that when this product is applied to a crop, birds do not eat it.

An optimum embodiment of the present invention is to prevent the feeding of seeds after sowing by birds by treating the seeds of crops with bisbenzyl sulfides, and therefore, it can be used as a seed treatment agent. Most preferred.

The formulation of the present invention is used as a solution, emulsion, wettable powder, or powder containing these bisbenzyldisulfide derivatives in the amount of 0.001 to 1%, preferably about 0.1%, in the amount of the active ingredient in seeds or crops.

Next, examples will be shown, but it goes without saying that the present invention is not limited to the following examples, and further insecticides, fungicides, plant regulators, fertilizers, trace elements, colorants, glues, surfactants,
It is also possible to mix with a fine powder of a mineral substance or the like.

Example 1. 10 parts of bisbenzyl sulfide are uniformly dispersed in 90 parts of vinyl acetate emulsion. This product was added to soybean seeds in a weight ratio of 1%, uniformly coated and air-dried.

Example 2. 10 parts of bisparachlorobenzyl sulfide, 74 parts of calcium carbonate, 5 parts of polyvinyl alcohol, red pigment 2
Parts, 4 parts of surfactant and 5 parts of white carbon are mixed well and pulverized to give a powder. This product was added to corn seeds in a weight ratio of 1%, and while uniformly dressed, water was sprayed to adhere well and then dried.

Example 3 10 parts of bisbenzyl disulphide are uniformly dispersed in 90 parts of acrylic resin emulsion. This product was diluted with 100 times the amount of water and sprinkled on the seedlings of soybeans that were germinating.

Example 4. Bis-orthochlorobenzyl sulfide 50 parts, dispersant 5
Parts, 4 parts of wetting agent, 5 parts of auxiliary agent and 36 parts of clay are mixed and pulverized to obtain a wettable powder. Dissolve 2 parts of this product in 1000 parts of water and sprinkle on the fruits of the crops to be protected from bird damage.

Example 5. 50 parts of bisbenzyl disulphide and 50 parts of talc were crushed,
Mix. This product was dressed on wheat seeds at a superimposition ratio of 1%.

Test Example 1. Sparrows were fed by winding white rice on a feeding table made in the center of a large open space. When a certain number of sparrows came to the feeding table, bisbenzyl sulfide (1), bis-orthochlorobenzyl sulfide (2) and bisparachlorobenzyl sulfide according to Example 5 were added to white rice. Thiuram preparation (80% wettable powder), which is prepared by coating the preparation of (3) to 0.1% of the seed weight, coating of talc alone with the same weight, and the effect of preventing feeding of birds is known. The seed weight of 0.12
The 5% powdered ones were put into separate sheares and placed on the feeding table at the same time to compare the amount of food intake. It was observed for 3 days, rested for 1 week, and repeated 5 times.

As shown in Table 1, the food intake increased in the talc-only plots as the days passed, but the food intake in the plots treated with the present invention remained low. The product of the present invention was less familiar than the thiuram section and was effective for a long time.

Test Example 2. Soybean seeds were coated with 2% of the bisbenzyl sulfide preparation of Example 1 to which red pigment was added, and the soybean seeds were then coated and sown in a field. As a control, soybeans coated with thiuram 80% wettable powder and 0.1% were used, and the ridges were arranged alternately.

The results show that, as shown in Table 2, the damage rate of the treated area varied depending on the degree of damage each time, but the treated area of the product of the present invention was obviously less damaged than the thiuram powder-coated area and the yield of soybeans was low. Also increased.

Claims (1)

[Claims] 1. A general formula A bird antifeedant containing bisbenzyl sulfide represented by the formula (wherein X is the same or different and represents a hydrogen atom or a halogen atom).