JPH0160442B2 - - Google Patents

Description

[Detailed description of the invention]

In the agriculture and forestry industry, crop seeds and harvested products are eaten by birds as suitable food, and the damage caused is extremely large. There are many types of birds that cause damage, and the most commonly seen are the brown pigeon, sparrow, turtle dove, and crow.The types of crops that are damaged after sowing are wide-ranging, including soybeans, corn, and wheat, and often lead to the abandonment of cultivation. It is. Furthermore, fruits such as rice, grapes, and watermelons that are close to being harvested are often damaged by sparrows, starlings, crows, and other animals. Also, grain bags being stored may be damaged by brown pigeons. Various methods have been used to prevent damage from these birds, including the use of repellents, acoustics, scarecrows, and models of carnivorous birds.
Each has advantages and disadvantages, and there are currently very few practical methods to prevent ingestion. It has traditionally been thought that birds have a dull taste, but
The present inventors believe that there may be a taste that birds physiologically dislike, and have investigated the feeding repellent effects of various compounds, and have found that aloin, a component of Aloe plants, has a strong feeding repellent effect. discovered this and completed the present invention. The anti-feeding agent of the present invention is a preparation of aloin or an aloe extract containing aloin in an appropriate dosage form, and the anti-feeding agent is prepared by dipping seeds or crops to be protected.
It is applied by methods such as spraying or powder coating to prevent birds from eating it. Aloin is contained in all plants belonging to the genus Aloe, has the following structural formula, and has been known for a long time. The preparations of the present invention include solutions, emulsions, and
It is used as a wettable powder or powder in seeds or crops in an amount of active ingredient of 1 to 0.01%, preferably 0.1%. Examples are shown next, but it goes without saying that the present invention is not limited to these examples.
Plant regulators, fertilizers, trace elements, colorants, glues,
It is also possible to blend surfactants, mineral fine powder, etc. Example 1 10 parts of aloin was uniformly dispersed in 90 parts of vinyl acetate emulsion. This is 1% of the weight of soybean seeds.
Add to coat evenly and air dry. Example 2 10 parts of aloin, 74 parts of calcium carbonate, 5 parts of polyvinyl alcohol, 2 parts of red pigment, 4 parts of surfactant
1 part and 5 parts of white carbon were thoroughly mixed and ground into powder. Add this material to make up 1% of the weight of the corn seeds, sprinkle with water while coating the corn evenly, and allow it to adhere well, then dry. Example 3 10 parts of aloin was uniformly dispersed in 90 parts of acrylic resin emulsion. Dilute this product with 100 times the amount of water and spray it on budding soybean sprouts. Example 4 1 part of aloin was dissolved in 1000 parts of water. This substance is sprayed on the berries of crops that are intended to be protected from bird damage. Example 5 50 parts of aloe extract dry powder was mixed with 50 parts of talc. This material is coated in powder to make up 1% of the weight of wheat seeds. Test Example 1 Indoor test One turtledove was kept in a large cage, and the formulations of Examples 1 and 2 were fed to wheat seeds at 1/2 the weight of the seeds.
%, a commercially available product (thiuram 80% hydrating powder) coated to 0.125% of the seed weight, and untreated seeds were placed in fixed amounts in separate shears and given at the same time. The next day, the amount of food consumed by each sialet was examined. The experiment was carried out on 3 birds by supplementing food for 5 consecutive days, and repeated 3 times at intervals of more than 1 week. As shown in Table 1, the turtle doves initially ate from any of the shears at random, but eventually they stopped pecking at the treated products of the present invention.
The amount of food eaten per day was decreasing. The animals treated with the commercially available product were slightly repellent on the first day, but they quickly got used to it and from the third day onwards, the amount of food eaten was almost the same as that of the untreated food.

[Table] 2 Field test The preparations of Examples 1, 2 and 1' (2% red pigment added to 1) were applied to soybeans coated and untreated soybeans per 1% of the seed weight, with a plant spacing of 20 cm, and between furrows. Two seeds per plant were sown at 60 cm as follows. ○B 24 wards with 10 plants (2m) per ward in 1 ward, and treated and non-treated areas arranged in a checkered pattern ○B 40 plants (8m) per ward in 1 ward, with treated and untreated areas alternated 6 plots arranged in parallel. For the control, a commercially available product (thiuram 80% hydrating powder) coated with 0.125% of the seed weight was used. The number of normally grown seedlings was counted when all the cotyledons appeared. The damage was caused by several turtle doves. As shown in Table 2, the damage to the sowing area of seeds coated with the product of the present invention was clearly small, and the anti-feeding effect was very high. On the other hand, the effect of commercially available treatment was low. The colored product of Example 1' caused even less damage than the treated product of Example 1, but this is thought to be the result of learning to recognize the treated product based on color.

[Table] 3 Field test The formulation according to Example 3 was diluted 100 times with water,
In addition, the aqueous solution of Example 4 was applied to ears of paddy rice at the milk-ripening stage in a field (20 m ² in one section) where damage by sparrows is high.
The amount of spraying was repeated 5 times at a rate of 100 per 10 acres, and the degree of damage caused by sparrows was examined. A commercially available product (thiuram) was used as a control.
A 200 times solution of 80% hydrating powder) was similarly sprayed. The survey looked at 100 plants in one ward, and looked at the percentage of each plant that suffered from feeding damage by 10% or more. In addition, healthy paddy was threshed and the yield was determined. As shown in Table 3, the results showed that the product of the present invention had a very high anti-feeding effect and caused very little feeding damage.

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Claims (1)

[Claims] 1. An anti-feeding agent for birds containing aloin.