volume 43 issue 3 (september 2009) : 206-210
RESPONSE OF Bt COTTON TO PLANT GEOMETRY AND NUTRIENT COMBINATIONS
1Department of Agronomy
Acharya N.G. Ranga Agricultural University
Regional Agricultural Research Station, Nandyal- 518 502, India.
ABSTRACT
A field experiment was conducted during kharif seasons of 2006 and 2007 for two
years on vertisols. The experiment consisting of four spacings(120 x 60, 90 x 90, 90
x 60 and 90 x 45 cm) in main plots and ten nutrient combinations viz., no fertiliser ,
80 kg N / ha, 120 kg N / ha, 160 kg N/ ha, 75% RDF (90 - 45- 45 kg NPK/ ha), RDF
(120-60-60 kg NPK / ha),125% RDF (150-75-75 kg NPK / ha, 80 kg N- 40 kg K2O /ha,
120 kg N-60 kg K2O /ha and 160 kg N-80 kg K2O / ha in sub plots , was laid out in
split plot design with three replications. The results revealed that planting Bt cotton
at 90 cm x 45 cm with 150-75-75 kg NPK /ha gave higher kapas yield.
years on vertisols. The experiment consisting of four spacings(120 x 60, 90 x 90, 90
x 60 and 90 x 45 cm) in main plots and ten nutrient combinations viz., no fertiliser ,
80 kg N / ha, 120 kg N / ha, 160 kg N/ ha, 75% RDF (90 - 45- 45 kg NPK/ ha), RDF
(120-60-60 kg NPK / ha),125% RDF (150-75-75 kg NPK / ha, 80 kg N- 40 kg K2O /ha,
120 kg N-60 kg K2O /ha and 160 kg N-80 kg K2O / ha in sub plots , was laid out in
split plot design with three replications. The results revealed that planting Bt cotton
at 90 cm x 45 cm with 150-75-75 kg NPK /ha gave higher kapas yield.
REFERENCES
- Chen , Dehua, et al (2004). Effect Field Crop Res., 87 : 235-44.
- Constable, G.A. and Hearn, A.B. (1981) Irrig. Sci., 3 : 17-28.
- Reddy, R.R. and Gopinath, M.( 2008). J.Cotton Res.Dev.,22 : 78-80.
- Sankarnarayanan, K ., et al ( 2004). Absrtract presented In: International Symposium on “Strategies for Sustainable Cotton Production – A Global Vision “ held on Nov 23-25 ,University of Agricultural Sciences, Dharwad .pp 248.
- Singh , Jagbir , et al (2004). J.Cotton Res. Dev., 19: 172-74.
- Singh , Kulvir, (2007). J.Cotton Res.Dev.,21 :41-44.
- Yadav, K. S. (1991). India J. Agron.,36:173-76.
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Indian Journal of Agricultural Research
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