Efficacy of Bactericides Against Potato Common Scab Caused by Streptomyces in Yunnan, China
2022
Pu, Jin | Zhang, Zhenhua | Zhang, Hongji | Xu, Ya | Zhang, Baoju | Yang, Mengping | Li, Kuixiu | Zhang, Li | Xiong, Shen | Zhong, Naiqin | Yu, Decai
The occurrence of potato common scab (PCS) in Yunnan Province is progressively increasing. To screen for high-efficiency control agents against PCS, this experiment used 70% Ambam, 20% zinc thiazole, 60% Azoxystrobin, 90% Neophytamycin, 46.1% Copper hydroxide, 80% Ethylicin, and three Ambam-based compound formulations to conduct laboratory, greenhouse, and field control tests. In this study, 10 different species of Streptomyces (S. turgidiscasies, S. scabies, S. enissocaesillies, S. luridiscaliei, S. caviscabies, S. anulatus, S. aureofaciens, S. acidiscabies, S. europaeicabiei, and S. griseus) were used to screen the bactericides described above in the laboratory, and the results show that the anti-bacterial effects of different pesticides differ significantly. In Kirby-Bauer test, the inhibition zone diameter of Ambam is the biggest, and average diameter is 74.3 cm. The second largest diameter is three compounded formulations containing Ambam, while Kocide 3000 showed an average diameter is 38 mm. Kocide 3000, Ambam alone, and the three compounded.
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