Effect of Ethephon on Physiological Growth Parameters And Mineral Component Of Fenugreek (Trigonella foenum-graecum L.)

Abstract

This study was carried out in green under field condition at department of biology/college of Education for the winter season 2003-2004 to investigate the effect of ethephon concentration (0, 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000) ppm. a.i. spraying at three growth stages (seedling stage at 30 days, vegetative growth stage at 6o days , beginning flowering growth stage at 90 days) on some growth parameters ( vegetative dray weight , Leaf Area Ratio (L.A.R.), Leaf Area Duration (L.A.D.), Net Assimilation Rate (N.A.R.), BioMass Duration (B.M.D.), Crop Growth Ratio (C.G.R.) and mineral composition (N%, P%, K%) of local fenugreek (Indian helpa). The design which used is R.C.B.D. with three replicates. The highest figures for (vegetative dry weight, leaf area ratio L.A.R., leaf area duration L.A.D., Biomass Duration B.M.D., crop growth ratio C.G.R.) were found at ethephon (1000-1500) ppm. Ethephon at high levels (3500)ppm. increased the value of net Assimilation Rate N.A.R. also the ethephon at (2000) ppm caused highly increased in N% ,P%. K% percent.The first spraying date at seedling period were significantly advanced at all vegetative growth values than other spraying dates.