Effect of Treated Squash Plants by Cytokinin Hormone (CKs) on the Infestation by Bemisia tabaci and Tetranychus urticae

Hayam, Saad

doi:10.21608/eajbsa.2020.68343

Abstract

This study was carried out to study effect of treated squash plants Cucurbita pepo L. (var. Andro 174) by two concentrations of Cytokinin Hormone CKs (25 ppm and 45 ppm) on the infestation by Bemisia tabaci(Hemiptera: Aleyrodidae)and Tetranychus urticae Koch (Fam: Tetranychidae) at Giza Governorate during 2017, 2018 seasons under glasshouse conditions. Results obtained showed that squash plants treated with a small concentration of CKs (25ppm) were lower infestation by both B. tabaciand T. urticae compared to control (plants which did not treat with any hormone). While squash plants treated with a high concentration of CKs (45ppm) were higher infestation by both the two pests compared to control. Also, results obtained showed that treated squash plants with a small concentration of CKs improved morphological characteristics and internal components of these plants compared to control, while when treated squash plants with a high concentration of the same hormone had badly effect on the morphological characteristics and internal components of these plants compared to control

Highlights

Squash (Cucurbita pepo L.) considers one of the most important vegetable crops in Egypt and all over the world which cultivated in the open field and under glasshouse conditions
Squash crop infested with large scale of different insects such as Bemisia tabaci (Hemiptera: Aleyrodidae) which consider one of the most damaging insects infesting vegetables crops either in the open field or under greenhouse conditions (Adriaan et al 2013) who reported that the B. tabaci seen as highly population on squash plants both in the open field and under greenhouse conditions
Andro 174 by two concentrations of Cytokinin Hormone CKs (25 ppm and 45ppm) of the infestation by Bemisia tabaci (Hemiptera: Aleyrodidae) and Tetranychus urticae Koch (Fam: Tetranychidae) at Giza Governorate during 2017, 2018 seasons under glasshouse conditions Season 2017: Data tabulated in Table (1) show the population fluctuation of B. tabaci and T. urticae on squash plants treated by different concentrations of Citokinin Hormone (CKs) at Giza Governorate during 2017 season

Summary

Introduction

Squash (Cucurbita pepo L.) considers one of the most important vegetable crops in Egypt and all over the world which cultivated in the open field and under glasshouse conditions. Results obtained showed that squash plants treated with a small concentration of CKs (25ppm) were lower infestation by both B. tabaci and T. urticae compared to control (plants which did not treat with any hormone).

Results

Conclusion