Influence of different Plant Densities on Physiological Parameters vis-à-vis architecture 25on Bt cotton (Gossypium Hirsutum L.)

Abstract

A field experiment was conducted on “Influence of plant density vis-à-vis architecture on Bt cotton (Gossypium hirsutum L.) yield and quality parameters” was carried out on sandy loam soil at College farm, College of Agriculture, PJTSAU, Rajendranagar, Hyderabad during 2021-23. The experiment was laid out in split plot design with three replications. Results revealed that physiological parameters viz., significant on leaf area index and light interception rate were record highest in semi open type. Specific leaf weight was found to be highest in compact type of plant canopy. Among plant densities, leaf area index and light interception rate were observed to be highest in plants planted under 90 x 20 cm (55,555 plants ha-1), while highest specific leaf weight was noticed highest in plant spacing of 90 x 60 cm (18,518 plants ha-1) during two years of study and pooled mean. Nonsignificant statistical differences were observed among canopy temperature and SPAD readings (chlorophyll content in leaves).