Infestation of Cotton Leaf Curl Virus in two Bt Cotton Cultivars under Different Sowing Methods and Plant Spacing Systems
Year: 2017
Type: article
Abstract: Cotton production is integral to economic development of Pakistan.However, cotton leaf curl virus (CLCuV) infestation affects the growth and productivity of cotton, and has been causing serious yield losses for the last two decades.Transgenic Bt varieties have resistance against CLCuV and can produce the high yield.This experiment was conducted to evaluate the effect of different sowing methods (flat sowing and bed sowing) and plant spacing (22.5 and 30 cm) on CLCuV infestation, whitefly population and growth and yield of two Bt cultivars viz.AA-703 and FH-113 during 2010 and again in 2011.The experiment was laid out in a split-split plot design with three replications.The average of the two years' results showed that there was 78% CLCuV incidence in 30 cm spacing as compared to 85% incidence in 22.5 cm spacing.However, cotton crop grown at narrow spacing with higher plant population (44444 plants ha -1 ) produced 17% higher seed cotton yield than wider spacing with lower plant population (33333 plants ha -1 ).The sowing methods did not significantly affect the disease incidence nonetheless the seed cotton yield of bed sown crop was 21% higher than the flat sown cotton crop.Cultivar AA-703 produced 14% higher seed cotton yield than cultivar FH-113 due to low disease infestation, higher boll weight and more number of bolls.The net profit (Rs.102577 ha -1 ) and benefit cost ratio (1.65) indicated that cotton cultivar AA-703 sown on beds at plant spacing of 22.5 cm could produce the maximum seed cotton yield.
Author: Fida Hussain
Institution: University of Agriculture Faisalabad
Language: English
Topic: Plant Virus Research Studies
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2791511669