Sterilizing composite and preparation thereof
A technology of fungicides and compositions, which is applied in the field of fungicide compositions and preparations for the prevention and treatment of cereal crop diseases, which can solve the problems of limited control range of fungicides, poor control effect, and inability to provide comprehensive protection for crops, etc., to achieve long-lasting effects The effects of long life, reduced dosage, and safe crops after cropping
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Embodiment 1
[0040] Embodiment 1, indoor toxicity assay of bactericidal composition of the present invention
[0041] In order to screen the compound ratio of fenpropidin and thiophanate-methyl, the indoor toxicity test was carried out with different ratios of fenpropidin·thiophanate-methyl. The pot method was used to test the toxicity. At the same time, the toxicity of single agent of fenpropidin and thiophanate-methyl was determined respectively.
[0042] Select the susceptible wheat varieties for potting, and wait for the seedlings to grow to the 2-3 leaf stage for later use. The fresh spores of powdery mildew fungus produced on the leaves of the diseased wheat within 24 hours were evenly shaken off and inoculated on the treated potted wheat at the 2-3 leaf stage. No less than 3 pots per treatment, 10 plants per pot. Each treatment was repeated three times, sprayed with 200-fold, 400-fold, 600-fold, 800-fold, and 1000-fold diluted medicaments, and then cultured under suitable conditi...
Embodiment 2、20
[0053] Embodiment 2, 20% fenpropidin thiophanate-methyl suspoemulsion
[0054] 10% fenpropidin, 10% thiophanate-methyl, 4% pull open powder BX, 0203B5% Nongrui, 10% tetrahydrosugar alcohol, 1% xanthan gum, 0.1% silicone defoamer, 100% water supplement . Add wetting dispersant, thickener and defoamer to the original medicine of thiophanate-methyl to make suspending agent, then add the original medicine of fenpropidin for mixing, then add emulsifier and solvent, add water and mix evenly.
Embodiment 3、36
[0055] Embodiment 3, 36% fenpropidin·thiophanate-methyl suspoemulsion
[0056] Fenpropidin 30%, thiophanate-methyl 6%, D4255%, castor oil polyoxyethylene ether 7%, tetrahydrofuran 15%, sodium acrylate 0.5%, silicone defoamer 0.1%, water 100%. Add wetting dispersant, thickener and defoamer to the original medicine of thiophanate-methyl to make suspending agent, then add the original medicine of fenpropidin for mixing, then add emulsifier and solvent, add water and mix evenly.
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