Abstract

The current experiment was conducted in greenhouse conditions to check the effect of silicon application methods (foliar and drenching), silicon sources (silicon dioxide: SiO₂ and potassium silicate: K₂SiO₃), and silicon concentrations (0, 200 and 400 ppm) on the oviposition preference and biology of Bemisia tabaci on cotton plants. Significantly lower oviposition and increased duration of all immature stages and total cycle of B. tabaci was observed on plants treated with foliar silicon applications compared to the drenching silicon applications. Among silicon sources, SiO₂ significantly decreased oviposition and increased the duration of all immature stages and total cycle of B. tabaci as compared to K₂SiO₃. Similarly, a significantly lower oviposition and prolonged developmental period of all immature stages and total cycle of B. tabaci was observed on plants subjected to 200 and 400 ppm silicon concentrations compared to untreated control. Our results suggest that silicon is an eco-friendly approach to control B. tabaci when applied via foliar application method in an integrated pest management program.

摘要

目前的实验在温室条件下进行，以检查硅施用方法（叶面和淋水）、硅源（二氧化硅：SiO ₂和硅酸钾：K ₂ SiO ₃）和硅浓度（0、200 和 400 ppm）的影响) 关于烟粉虱对棉花植物的产卵偏好和生物学。与浸透硅施用相比，在叶面施用硅处理的植物上观察到烟粉虱的所有未成熟阶段和总周期的产卵量显着降低和持续时间增加。在硅源中，SiO ₂显着减少了产卵并增加了所有未成熟阶段的持续时间和总周期烟粉虱与 K ₂ SiO ₃相比。类似地，与未处理的对照相比，在经受 200 和 400 ppm 硅浓度的植物上观察到烟粉虱的所有未成熟阶段和总周期显着降低的产卵和延长的发育期。我们的研究结果表明，在害虫综合治理计划中通过叶面施用方法施用硅时，硅是一种控制烟粉虱的环保方法。