Ecological impact on development of hemipterous bug (dysdercus koenigii) (hemiptera: pyrrhocoridae) and boll rot disease of cotton (gossypium hirsutum) grown in the diversified field

Haider Karar; Muhammad Amjad Bashir; Muneeba Haider; Najeeba Haider; Muhammad Hassan; Mohamed Hashem; Saad Alamri

doi:10.1016/j.sjbs.2021.03.066

Ecological impact on development of hemipterous bug (dysdercus koenigii) (hemiptera: pyrrhocoridae) and boll rot disease of cotton (gossypium hirsutum) grown in the diversified field

Saudi J Biol Sci. 2021 Jul;28(7):3957-3964. doi: 10.1016/j.sjbs.2021.03.066. Epub 2021 Apr 9.

Authors

Haider Karar¹, Muhammad Amjad Bashir², Muneeba Haider³, Najeeba Haider³, Muhammad Hassan⁴, Mohamed Hashem^{5

6}, Saad Alamri⁵

Affiliations

¹ Mango Research Institute, Multan, Pakistan.
² Department of Plant Protection Faculty of Agricultural Sciences, Ghazi University Dera Ghazi Khan Punjab, Pakistan.
³ MNS-University of Agriculture, Multan, Pakistan.
⁴ Faculty of Agricultural Sciences & Technology, Department of Soil Science-Bahauddin Zakariya University, Multan, Pakistan.
⁵ King Khalid University, College of Science, Department of Biology, Abha 61413, Saudi Arabia.
⁶ Assiut University, Faculty of Science, Botany and Microbiology Department, Assiut, 71516, Egypt.

Abstract

The experiment was conducted at Cotton Research Station, Multan to study the impact of weather factors and Hemipterous bug on development of cotton boll disease in cotton variety bt- 886 for three consecutive years i.e., 2012, 2013 and 2014. The results revealed that the population of Red Cotton Bug (RCB) per plant remain 0.50 and 0.34 during years 2012 and 2013, respectively but increased during 2014 i.e., 3.21 per plant. The number of unopened bolls (UOB) were more during 2012 i.e., 13.43% with yellowish lint (YL) 76.30% and whitish lint (WL) 23.70% at average maximum temperature of 34.73◦C, minimum temperature of 22.83◦C, RH of 77.43% and 11.08 mm rainfall. Similarly during 2013, the number of unopened bolls were less i.e., 0.34 per plant with YL 1.48 and WL 99.53 per plant when average maximum temperature 34.60^◦C, minimum temperature 23.37^◦C, RH 73.01% and 9.95 mm rainfall. During 2014, RCB population per plant was 3.22 with no UOB and YL was 0.00% and WL was 100% when average maximum temperature 23.70^◦C, minimum temperature 23.18◦C, RH 71.67% and 4.55 mm rainfall. So our results concluded that the cotton bolls rot disease was more during 2012 due to abrupt changes in environmental factors. The RCB may be the carrier of boll rot disease pathogen during more rainfall.

Keywords: Cotton variety bt-886; Hemipterous bug; Weather factors; Whitish lint; Yellowish lint.