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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(12): 45-52
DOI: https://doi.org/10.20546/ijcmas.2017.612.006


Growth and Yield of Irrigated Bt Cotton (Gossypium hirsutum L.) as Influenced by Different Agronomic Practices
Basavaraj, B.M. Chittapur, A.S. Halepyati, A. Ameregouda, G.S. Yadahalli and M.Y. Ajayakumar
Department of Agronomy, University of Agricultural Sciences, Raichur-584102, Karnataka, India
*Corresponding author
Abstract:

A field experiment was conducted to study the influence of different agronomic practices on growth, yield attributes and yield of Bt cotton at the Main Agricultural Research Station, Raichur during Kharif 2016. Nine treatments comprising of normal spaced and fertilized non-Bt (cv. RAHH-455) and Bt hybrid (cv. Bindas) in addition to closer spacing Bt hybrid supplied with 125 % of recommended nutrients (187.5: 92.75: 92.75 kg N:P2O5:K2O ha-1), foliar spray of 1% MgSO4 twice and 1% KNO3 thrice, soil application of MgSO4 (25 kg ha-1) and FeSO4 (10 kg ha-1) and ZnSO4 (10 kg ha-1), foliar spray of 1% MgSO4 + 1% 19:19:19 or 1% KH2PO4 and polyethylene mulching replicated thrice. The results revealed that closer spaced Bt hybrid + 125 % RDF + 3 sprays of 1% each of MgSO4 and 19:9:19 and polyethylene mulching recorded significantly higher plant height (159.2 cm), monopodia (2.0), sympodia (27.7), total dry matter production (347.0g), leaf area index (1.81), number of bolls plant-1 (48.27) and seed cotton yield (4122 kg ha-1) compared to other nutritional treatments. It also registered higher net returns (₹ 1,59,296 ha-1), gross returns (₹ 2,22,588) and B:C ratio (3.52). It was followed by closer spaced Bt hybrid + foliar spray of 1% KH2PO4 thrice.


Keywords: Bt cotton, Foliar spray, KH2PO4, Major and micronutrients, Polythene mulching.
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How to cite this article:

Basavaraj, B.M. Chittapur, A.S. Halepyati, A. Ameregouda, G.S. Yadahalli and Ajayakumar, M.Y. 2017. Growth and Yield of Irrigated Bt Cotton (Gossypium hirsutum L.) as Influenced by Different Agronomic Practices.Int.J.Curr.Microbiol.App.Sci. 6(12): 45-52. doi: https://doi.org/10.20546/ijcmas.2017.612.006