Vol. 4 (3) : May-June 2013 issue
Green Farming Vol. 4 (3) : 355-357 (May-June, 2013)
Influence of growth regulator application on Bt cotton under varying plant densities
K. SHEKAR1*, M. VENKATA RAMANA2, S.SRI DEVI3
Deptt. of Agronomy, College of Agriculture, ANGRAU, Rajendranagar, Hyderabad – 500 030 (Andhra Pradesh)
Designation : 1P.G. Student *(shekaragrico@gmail.com), 2Sr. Scientist, 3Scientist
Subject : Agronomy and Crop Production
Paper No. :
Total Pages : 3
Received : 08 January 2013
Revised accepted : 23 May 2013
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Citation :
K. SHEKAR, M. VENKATA RAMANA and S. SRI DEVI. 2013. Influence of growth regulator application on Bt cotton under varying plant densities. Green Farming Vol. 4 (3) : 355-357 ; May-June, 2013
ABSTRACT
A field experiment was conducted during kharif, 2010 at College Farm, Rajendranagar, Hyderabad to study the effect of different plant densities and growth regulator application on Bt cotton with twelve treatments replicated thrice in RBD. The results revealed that among plant densities, 37,037 plants ha-1 (90 cm x 30 cm) recorded significantly higher number of sympodial branches per plant (19.81) and seed cotton yield (1668 kg ha-1) over that of 24,691 plants ha-1(90 cm x 45 cm) and 18,518 plants ha-1(90 cm x 60 cm). Quality parameters did not differ significantly between different spacings. Among the canopy management practices, sympodial branches per plant (20.76) and seed cotton yield (1635 kg ha-1) were significantly higher with two sprays of chloro mepiquat chloride when compared to single spray, de topping and control respectively. Quality parameters did not differ significantly with chloro mepiquat chloride application except fibre strength.
Key words :
Bt cotton, Chloro mepiquat chloride, De-topping, Plant density.
