Effect of plant density on seed cotton yield

Cotton (Gossypium hirsutum L.) is an important cash crop for small-scale farmers in Mozambique. The yield is dependent on various factors of plant management, and this can be affected by variations in plant density. In Mozambique the cotton crop is mainly growed in plant and row space arrangement corresponding to 50,000 plants per hectare, which is considered low resulting in low cotton yielding.The goal of this study, was to evaluate the effect of plant density in cotton yield, Gossypium hirsutum L. The experiment was conducted in Namialo village, in a randomized complete block design with four replications in a split-plot, where the main plot was distance between the plants within the rows (15, 20, 25, 30 cm) and distance between the rows (50, 75, 100 cm) as subplots randomized in each plot, making plant from 33000 to 133000 plants per hectare. Results of this experiment showed no significant interaction between the distance between the rows and plants on cotton yield, number of bolls per plant and plant height. In addition, as the distance between the plants increased, the number of bolls per plant also increased. This experiment empathize that the combination of 70 cm between the rows and 20 cm between the plants, with a total density of about 71400 plants per hectare resulted in a highest yield.