Vol. 11, Issue 6 (2022)

Author(s):
A Jaffer Sadhik, S Kavitha, J Renugadevi, R Umarani, V Manonmani and M Ananthi

Abstract:
Field Experiment was conducted to study the different plant spacing viz., wide (90 x 45 cm), medium (60 x 30 cm) and closer spacing (45 x 15 cm) on crop growth, flowering, seed filling, yield and resultant seed quality in cotton revealed that a closer spacing of 45 x 15 cm produced more number of plants plot^-1 (177) and taller plants (85.6 cm) when compared to medium (60 x 30 cm) and wider spacing (90 x 45 cm). The wider spacing (90 x 45 cm) has taken lesser number of days for flower initiation (47 days) and 50 per cent flowering (57 days). The same spacing had also recorded higher chlorophyll content, more number of monopodial branches (2.2) however; maximum number of sympodial branches per plant (10.7) was recorded by closer spacing (45 x 15 cm). More number of flowers and bolls plant^-1, highest kapas and seed yield plant^-1 were recorded in wider spacing of 90 × 45 cm (68, 18.8, 64.78 g and 45.77 g, respectively) than the other two spacings. However, higher kapas and seed yield ha^-1 (5709.1 kg and 3741.6 kg, respectively) was recorded in closer spacing because of more number of plants due to closer spacing. The resultant seed quality analysis revealed that 100 seed weight, seed germination, dry matter production and vigour index were higher in wider plant spacing of 90 x 45 cm (7.89 g, 80%, 4.77 g seedling^-10 and 2584, respectively) than medium (60 x 30 cm) and closer spacing (45 x 15 cm).