| Title: |
Improvement of the entomopathogenic fungus Cordyceps javanica efficacy against Diaphorina citri (Hemiptera: Liviidae) under ultraviolet-B radiation and lower relative air humidity provided by oil formulations. |
| Authors: |
Conceschi, Marcos R., Iwanicki, Natasha Sant´Anna, de Andrade Moral, Rafael, D'Alessandro, Celeste P., Delalibera Junior, Italo |
| Source: |
BioControl; Dec2024, Vol. 69 Issue 6, p687-698, 12p |
| Abstract: |
Diaphorina citri Kuwayama (Hemiptera: Liviidae) stands out as the most critical pest in citriculture. With chemical pesticides facing reduced efficacy and increased resistance in populations, biological control has emerged as a promising strategy. The performance of entomopathogenic fungi is influenced by abiotic factors such as RH and ultraviolet radiation (UV-B). Understanding how these factors interact with entomopathogens enables us to optimize their efficiency against the pest, guiding the ideal timing for application and identifying the most favorable seasons. Our study aimed to assess the impact of different RH levels and UV-B exposure on the efficacy of the entomopathogenic fungus Cordyceps javanica (Frieder. and Bally) Kepler, B. Shrestha, and Spatafora (Hypocreales: Cordycipitaceae) strain ESALQ1296 in controlling D. citri. C. javanica with 0.075% KBRAdj® exhibited superior performance in D. citri control across all moisture levels, particularly during periods of low RH (≤ 50%) and extended UV-B exposure (> 4 h), when compared to Tween 80. However, it is expected to perform better when spraying during periods with lower UV-B radiation incidence and higher RH. Considering the high efficacy required to control this vector, implementing the fungus is contingent on the formulation utilized and the prevailing environmental conditions. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
