Optimal combination of canopy management and planting density for yield enhancement in late-sown cotton
摘要
Cotton growers often face reduced yield and fiber quality after wheat harvest due to the shortened growing season. The delay in wheat harvest is due to a number of reasons, such as labor unavailability, weather, and machinery constraints. The optimal combination of canopy management and planting density may help in mitigating these problems in late-sown cotton.
MethodsA two-year (2022 and 2023) field experiment was carried out at the University of Agriculture, Faisalabad, Pakistan, using a randomized complete block design with a factorial arrangement comprising two factors. The two planting densities (87489 and 58326 plants ha− 1) and six canopy management techniques, pruning, manual topping, chemical topping, and their combinations.
ResultsCotton growth, yield, and fiber quality were greatly influenced by these techniques. Chemical topping plus pruning increased sympodial branches up to 38%, and seed cotton yield at higher planting density. In contrast, manual topping plus pruning outperformed other methods in improving fiber uniformity and strength.
ConclusionsThe results showed that a combination of chemical topping plus pruning enhances seed cotton yield, whereas manual topping integration with pruning improved fiber quality. Finding suggests the importance of selecting an optimal combination according to production needs under a cotton wheat cropping system in late sown conditions.