ABSTRACT

The compatibility of Isaria fumosorosea IF-1106 with 12 commercial pesticide adjuvants was evaluated using the predictive parameter SC₉₀ (the adjuvant concentration at which 90% of conidia survived). Based on the SC₉₀ values and the functionalities of the adjuvants used, two conidial wettable powder formulations of IF-1106 were formulated. Our results indicated that SC₉₀ values can be used to evaluate the compatible concentration of adjuvants and Isaria fumosorosea. The wettable powder formulations F1 and F2 formulated on the basis of this research have a conidia germination rate of 92.4% ± 2.5% and 90.6% ± 1.3%, respectively, showing high compatibility, and their main quality control parameters (conidia germination rate, conidia suspension rate, wetting time, etc.) met commercialisation requirements. Our study also verified that IF-1106 is compatible with major surfactant and water-soluble polymer adjuvants in pesticide formulations when the use concentration is less than its SC₉₀. Our research provided a new method for evaluating the compatibility of adjuvants with entomogenous fungi, and formulated two promising mycoinsecticide formulations for sucking insects in greenhouses.

摘要

使用预测参数SC ₉₀（在90％的分生孢子存活的佐剂浓度）评估Isaria fumosorosea IF-1106与12种市售农药佐剂的相容性。根据SC ₉₀值和所用佐剂的功能，配制了两种分生孢子的IF-1106孢子可湿性粉剂。我们的结果表明，SC ₉₀值可用于评估佐剂和烟曲霉的相容浓度。根据这项研究配制的可湿性粉剂F1和F2的分生孢子萌发率分别为92.4％±2.5％和90.6％±1.3％，显示出高相容性，并且其主要质量控制参数（分生孢子萌发率，分生孢子）悬浮率，润湿时间等）满足商业化要求。我们的研究还证实，当使用浓度低于其SC ₉₀时，IF-1106与农药制剂中的主要表面活性剂和水溶性聚合物佐剂兼容。我们的研究提供了一种评估佐剂与食虫真菌相容性的新方法，并制定了两种有前途的霉菌杀虫剂制剂，可用于吸吮温室中的昆虫。