STUDY ON THE INTERACTIVE EFFECT OF IRRIGATION METHODS, NITROGEN AND BIOREGULATOR ON GROWTH, YIELD AND QUALITY OF HYBRID COTTON
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Date
1994
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AAU, Anand
Abstract
A field experiment was conducted on loamy sand soil of College Agronomy Farm, Gujarat Agricultural University, Anand Campus, Anand, to study the interactive effect of irrigation methods, nitrogen and bioregulator on growth, yield and quality of hybrid cotton cv. GC HY-8 during kharif season of the years 1991-92 and 1992-93. Thirty treatment combinations comprising three methods of irrigation (surface flooding, every furrow irrigation and alternate furrow irrigation), two concentrations of NAA (0 and 20 ppm) were assigned to main plots and five levels of nitrogen (140, 200, 260, 320 and 380 kg/ha) were relegated to sub-plots in split plot design with three replications. Every furrow irrigation method remarkably increased numbers of monopodial and sympodial branches/pl, LAI, dry biomass/pl, RGR, CGR and NAR as compared to alternate furrow irrigation and surface flooding methods during both the years. However, plant height and number of flowers/pl remained unaffected by irrigation methods.
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AGRONOMY, AGRICULTURE, A Study