Sterilizing composition containing isopyrazam and azoxystrobin

[0019] Embodiment 1: Indoor activity determination test

[0020] (1) Indoor spore germination test of wheat powdery mildew:

[0021] The wheat powdery mildew bacteria were inoculated into a petri dish containing PDA medium and cultured at 25°C in the dark. A large number of spores were found to be produced by microscopic examination, and a spore suspension was prepared with sterile water for later use.

[0022] The original drug was made into 24% pyraclostrobin-fluoxastrobin suspension for testing, and 4 groups of different treatments were set up, among which 0.3 μg / mL, 0.6 μg / mL, and 1.2 μg / mL (active ingredient) Compare with a clear water. The test method was carried out with reference to Wu Wenjun's "Introduction to Experimental Techniques of Plant Chemical Protection" (1993). Refer to Table 1 for test results.

[0023] Table 1. Indoor spore germination test results

[0024]

1

2

3

Clear water control

Active ingredients

0.3μg /

[0032] Example 2: 24% pyraclostrobin fluoxastrobin suspension concentrate

[0033] Weigh 4% pyraclostrobin, 20% fluoxastrobin, 2% Nongru 602#, 4% Nongru 500#, 3% lignosulfonate, 0.2% xanthan gum, 4% ethylene glycol , 0.5% silicone defoamer, add deionized water to make up to 100%. After the above raw materials are mixed, 24% pyraclostrobin-fluoxastrobin suspension concentrate is prepared through high-speed shear emulsification.

[0034] Example 3: 48% pyraclostrobin fluoxastrobin water dispersible granules

[0035] Weigh 8% pyraclostrobin, 40% fluoxastrobin, 4% sodium lauryl sulfate, 12% sodium lignosulfonate, 6% naphthalenesulfonate, 1.2% disintegrant, and bentonite to make up to 100%. After the above raw materials are mixed, they are pulverized and granulated by a jet mill to obtain 48% pyraclostrobin-fluoxastrobin water-dispersible granules.