International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 5
First page : (1273) Last page : (1278)
Article doi: http://dx.doi.org/10.18782/2320-7051.5902
Impact of Planting Density and Growth Regulators on Bt Cotton (Gossypium hirsutum L.) Hybrid Yield and Component Traits
Gowtham Prakash* and S. L. Korekar
*Department of Botany, Yeshwant Rao Chavan College, Tuljapur, Osmanabad, Maharashtra-413 601
Affiliated to, Dr. BAMU, Aurangabad, Maharashtra -431 004
*Corresponding Author E-mail: gowthamgpb@gmail.com
Received: 16.09.2017 | Revised: 20.10.2017 | Accepted: 25.10.2017
ABSTRACT
Agronomic investigation has been taken up to assess the impact of chemical growth regulator sprays and planting densities on Bt cotton hybrid yield, yield components and phenological traits in kharif 2015 under rainfed and irrigated condition. In order to study both two variables at time, split plot design was considered with three replicates, wherein five growth regulators sprays and three planting density treatments assigned to main plots and sub plots respectively. Pooled statistical analysis revealed that two sprays of chloro mepiquat chloride @ 60DAS + 90DAS treatment exerted significant favorable effect of plant height, number of bolls per plant and boll weight, leading to highest seed cotton yield (kg/ha). Whereas, high density planting (HDP) of 37037 plants/ha with 90X30 cm spacing found to be optimal to achive higher seed cotton yield (Kg/ha) with supplementary sprays of growth regulators to minimize the inter plant competition by restricting the excessive plant height. From this study it is quite evident that combination of high density planting (HDP) and two sprays of chloro mepiquat chloride could be explored to increase the productivity levels in Bt cotton hybrids with semi open plant architecture.
Key words: Bt cotton, split plot design, HDP, cholo mepiquat chloride, plantarchitecture
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Prakash, G. and Korekar, S. L., Impact of planting density and growth regulators on Bt cotton (Gossypium hirsutum L.) hybrid yield and component traits, Int. J. Pure App. Biosci.5(5): 1273-1278 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5902
