Vol. 10, Issue 11 (2021)

Author(s):
Sudhir Yadav, Harkirat Singh and Mandeep Kaur

Abstract:
The field experiment entitled “Effect of plant spacing’s and fertilizer levels on growth and productivity of desi cotton (Gossypium arboreum L.)” was conducted at Research Farm of University College of Agriculture, Guru Kashi University, Talwandi Sabo, Bathinda during kharif season in 2019. The trail was laid out in split plot design with three levels of spacing (67.5 x 30 cm, 67.5 x 45 cm and 67.5 x 60 cm) in main plots and four fertilizer levels (50, 100, 150 and 200% of recommended dose of fertilizer) in sub plots, replicated thrice. The plant spacing of 67.5 x 30 cm recorded higher plant height (241.2 cm), dry matter accumulation/ plant (382.4 g), leaf area index (9.4), seed cotton yield (16.2 q/ha), stick yield (50.5 q/ha) and biological yield (66.7 q/ha) but the plant spacing of 67.5 x 60 cm recorded maximum number of sympodial branches/plant (62.2), number of monopodial branches/plant (3.6), boll weight (2.7l), leaf area (224.4), number of harvested bolls/plant (24.7). Application of 150% RDF recorded maximum plant height (237.7 cm), dry matter accumulation/plant (393.0 g), number of sympodial branches/plant (60.5), number of monopodial branches/plant (3.7), leaf area (281.0), leaf area index (9.6), boll weight (2.8),number of harvested bolls/plant (24.4), stick yield (40.7 q/ha), seed cotton yield (13.4 q/ha) and biological yield (54.0 q/ha). The maximum seed cotton yield was observed at plant spacing of 67.5 x 30 cm with application of 150% RDF (16.9 q/ha) which was statistically at par with plant spacing of 67.5 x 30 cm with application of 100% RDF (l6.8 q/ha).