INFLUENCE OF FERTILIZER LEVELS AND SULPHUR ON YIELD, YIELD ATTRIBUTES AND ECONOMICS OF BT COTTON

D.K.D. DEEKSHITHA¹*, P. RAVINDRA BABU², K. SRINIVASULU^3
1Department of Soil Science and Agricultural Chemistry, Acharya N. G. Ranga Agricultural University, Guntur, 522509, Andhra Pradesh, India
²DEEKSHITHA D. K. D.*, RAVINDRA BABU P., SRINIVASULU K. Department of Soil Science and Agricultural Chemistry, Acharya N. G. Ranga Agricultural University, Guntur, 522509, Andhra Pradesh, India
³Department of Soil Science and Agricultural Chemistry, Acharya N. G. Ranga Agricultural University, Guntur, 522509, Andhra Pradesh, India
* Corresponding Author : deekshithadwarapudi5@gmail.com

Received : 04-10-2016     Accepted : 20-11-2016     Published : 30-11-2016
Volume : 8     Issue : 58       Pages : 3214 - 3217
Int J Agr Sci 8.58 (2016):3214-3217

Keywords : Bt cotton, Clay loam soil, Sulphur application, Kapas yield, Dry matter accumulation
Academic Editor : Dr Venkata Satish Kuchi
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

A field experiment was conducted during Kharif, 2013 at Agricultural college farm, Bapatla. The experimental soil was clay loam in texture, non saline, slightly alkaline in soil reaction with low organic matter, low available nitrogen, medium phosphorus, very high potassium and sufficient micronutrients. Results showed that highest plant height was recorded in where 150 per cent RDF + S @ 30 kg ha-1(T9) was applied, where as highest yield, dry matter accumulation, number of sympodial branches per plant, boll weight and boll number were recorded in the treatment which received 125% RDF + S @ 30 kg ha-1. Sulphur application along with 100, 125 and 150% RDF increased the kapas yield over the 100, 125 and 150 per cent RDF application alone. Among all the treatments 125% RDF + S @ 30 kg ha-1 imposition resulted in higher cost benefit ratio followed by soil test based recommendation.