Seed coating agent for controlling soya foot rot and preparation method thereof

Abstract

The invention provides a seed coating which can control root rot of soy beans and a preparation method thereof. The seed coating comprises a disinfectant and an accessory ingredient which can control root rot of soy beans. The material components are as follows: dimethomorph thiram, hymexazol, a film forming agent, a thickening agent, a warn color, foam killer and water which are prepared according to the following steps in turn: the original drugs of the thickening agent, the dimethomorph, the thiram and the hymexazol are added into proper amount of water, ground and stirred for 1.5 to 2 hours and fully mixed; then the film forming agent and the warn color are added and fully stirred and mixed for 1 to 2 hours; finally the foam killer is added for killing foams; and a finished product isobtained if the detection is qualified. The seed coating does not have harmful effects on the emergence of seedlings and growing of the beans, can control the Phytophthora root rot of the soy beans and the fusarium root rot of the soy beans; the control effect of the seed coating is between 80.2 and 85.7 percent; moreover, the seed coating does not have harmful effects to the growing of the soya beans and can remarkably improve the yield of the soy beans.

Description

technical field

[0001] The invention belongs to the technical field of crop disease prevention and control, and more specifically relates to a seed coating agent for preventing and treating soybean root rot and a preparation method thereof. Background technique

[0002] Soybean root rot is an important disease in soybean production, which occurs in various production areas of my country. It was reported for the first time in Ohio, U.S. by Suhovecky et al. in 1955. Since then, various countries have reported the serious occurrence of root rot (Ma Huiquan et al., 1988). The main feature of this disease is that it is widely distributed, and the mode of transmission mainly depends on soil-borne and seed-borne transmission. In recent years, with the continuous increase of soybean area, the situation of repeated cropping of soybeans has become increasingly serious, which has increased the damage of soybean root rot year by year, and has a greater impact on yield. %, severe disea...

Examples

Embodiment 1

[0034] The composition of embodiment 1 seed coating (by weight percentage)

[0035] 8% dimethomorph, 18% thiram, 5% hymexazol, 6% film former (by weight: the ratio of polyvinyl alcohol 1788, sodium benzoate and water: 5:1:3), 1% Thickener (bentonite), 0.5% warning colorant (basic rhodamine), 0.2% defoamer (tributyl phosphate) and the rest are water, making up 100%.

Embodiment 2

[0036] The composition of embodiment 2 seed coatings (by weight percentage)

[0037] 10% dimethomorph, 15% thiram, 8% hymexazol, 8% film former (by weight: the ratio of polyvinyl alcohol 1788, sodium benzoate and water: 5:1:3), 2% Thickener (bentonite), 0.3% warning colorant (water-based rose red), 0.2% defoamer (tributyl phosphate) and the rest are water, making up 100%.

Embodiment 3

[0038] The composition of embodiment 3 seed coatings (by weight percentage)

[0039] 10% dimethomorph, 20% thiram, 6% hymexazol, 4% film former (by weight: the ratio of polyvinyl alcohol 1788, sodium benzoate and water: 5:1:3), 0.5% Thickener (bentonite), 0.2% warning colorant (bright red pigment), 0.1% (tributyl phosphate) and the rest are water, making up 100%.

technical field

[0001] The invention belongs to the technical field of crop disease prevention and control, and more specifically relates to a seed coating agent for preventing and treating soybean root rot and a preparation method thereof. Background technique

[0002] Soybean root rot is an important disease in soybean production, which occurs in various production areas of my country. It was reported for the first time in Ohio, U.S. by Suhovecky et al. in 1955. Since then, various countries have reported the serious occurrence of root rot (Ma Huiquan et al., 1988). The main feature of this disease is that it is widely distributed, and the mode of transmission mainly depends on soil-borne and seed-borne transmission. In recent years, with the continuous increase of soybean area, the situation of repeated cropping of soybeans has become increasingly serious, which has increased the damage of soybean root rot year by year, and has a greater impact on yield. %, severe disea...

Examples

Embodiment 1

[0034] The composition of embodiment 1 seed coating (by weight percentage)

[0035] 8% dimethomorph, 18% thiram, 5% hymexazol, 6% film former (by weight: the ratio of polyvinyl alcohol 1788, sodium benzoate and water: 5:1:3), 1% Thickener (bentonite), 0.5% warning colorant (basic rhodamine), 0.2% defoamer (tributyl phosphate) and the rest are water, making up 100%.

Embodiment 2

[0036] The composition of embodiment 2 seed coatings (by weight percentage)

[0037] 10% dimethomorph, 15% thiram, 8% hymexazol, 8% film former (by weight: the ratio of polyvinyl alcohol 1788, sodium benzoate and water: 5:1:3), 2% Thickener (bentonite), 0.3% warning colorant (water-based rose red), 0.2% defoamer (tributyl phosphate) and the rest are water, making up 100%.

Embodiment 3

[0038] The composition of embodiment 3 seed coatings (by weight percentage)

[0039] 10% dimethomorph, 20% thiram, 6% hymexazol, 4% film former (by weight: the ratio of polyvinyl alcohol 1788, sodium benzoate and water: 5:1:3), 0.5% Thickener (bentonite), 0.2% warning colorant (bright red pigment), 0.1% (tributyl phosphate) and the rest are water, making up 100%.

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