Abstract

Effect of weather factors on the population dynamics of sucking insect pests and their natural enemies in transgenic and non-transgenic cotton

Highlights

  • In jassid population, maximum temperature had a nonsignificant negative effect on population in all the four treatments

  • From the multiple R2 values of 78.7%, 78.8%, 76.1% and 77.4%, it can be concluded that the two weather parameters viz. minimum temperature and RH explain a considerable amount of variations explained out of the four weather parameters in four treatments, respectively

  • The step down regression analysis showed that variable retained was only rainfall that explained a considerable amount of total variations explained by all the four weather parameters (Table 2)

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Summary

Short communication

Cotton (Gossypium spp.) is the principal cash crop cultivated in both temperate and tropical regions of the world. Cotton thrips and aphids damage the leaf tissue either by lacerating or sucking the sap, respectively and cause direct damage by reducing yield of the plant and indirect damage by aphid through lint contamination (Patel and Patel, 2014).Various meteorological parameters like temperature, relative humidity and rainfall have influence on the population dynamics of these insect pests. These meteorological parameters play an important role in developing weather based pest forecasting system (Fand et al, 2018). The Effect of weather factors on the population dynamics of sucking insect pests of cotton

Chrysoperla eggs
Findings
Regression equation

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