In order to develop a new compounding agent for the control of wheat scab, researchers at the College of Plant Protection of Nanjing Agricultural University and Zhenjiang Agricultural Institute in the Hilly Region of Jiangsu Province used Helicobacter growth rate method to determine carbendazim, triadimefon and prochloraz. , propofolazole and five kinds of mixture of prochloraz and prothioconazole against the indoor virulence of carbendazim R-10, and carried out field trials of wheat scab.
The results showed that carbendazim, triadimefon, prochloraz, prothioconazole and prochloraz and prothioconazole were 1:6, 1:3, 1:1, 3:1, 6:1. The EC50 values ​​of R-10 were 1.4800, 13.8819, 0.0246, 0.0787, 0.0397, 0.0207, 0.0127, 0.0153, and 0.0141 μg/mL, respectively. The synergistic coefficients of the five mixtures were 1.5088, 2.4541, and 2.9528, respectively. 1.9412, 1.9362, and there is a dose-effect negative correlation between the ratio difference and the synergistic effect.
In the field efficacy test of 1 year and 2 places, 40% prochloraz and prothioconazole wettable powder 750 g/hm2 were significantly better than wheat prochloraz and prothioconazole alone. And 25% carbendazim-triazolone wettable powder 2,250 g / hm2 of anti-effect, and for wheat safety, good development prospects. As of the end of June 2018, China has not approved the registration of prothioconazole products. (modern pesticides)
This article URL: Prothioconazole and prochloraz compound products have better control effect on wheat scab
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