Evaluation of the compatibility of Isaria fumosorosea (Hypocreales: Cordycipitaceae) IF-1106 with several adjuvants. Issue 5 (4th May 2021)

• Record Type: Journal Article
• Authors: Diao, Hongliang; Tian, Jing; Xing, Peixiang; Wang, Conglin; Han, Zhihui; Liu, Tongxian; Ma, Ruiyan
• Is Part Of: Biocontrol science and technology. Volume 31:Issue 5(2021)
• Page Start: 512
• Page End: 525
• Publication Date: 2021-05-04
• Subjects: Isaria fumosorosea -- formulation -- adjuvants -- compatibility; Pests -- Biological control -- Periodicals; Weeds -- Biological control -- Periodicals; Pesticides -- Environmental aspects -- Periodicals; Plants, Protection of -- Periodicals; Plants -- Biological control -- Periodicals; Agricultural pests -- Control -- Periodicals; Pest Control, Biological -- Periodicals; 632.96
• DOI: 10.1080/09583157.2020.1869700
• Languages: English
• ISSNs: 0958-3157

Abstract

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.