The Influence of Allelopathic Weeds Extracts on Weeds and Yield of Wheat (Triticum Aestivum L.)

Abstract

The experiment was conducted to examine the response of weeds and wheat crop to allelopathic weeds.The treatments included T¹=weedy Check (Control), T²=Chenopodium album concentration 30%, T³=Chenopodium album concentration 60%, T⁴=Convolvulus arvensis concentration 30%, T⁵=Convolvulus arvensis concentration 60% and T⁶=T² + T⁴. The experiment was laid out in a three replicated Randomized Complete Block Design. The results revealed that the allelopathic effect of Convolvulus arvensis at 60% concentration resulted positive and significant impact (P<0.05) on various growth and yield traits of wheat with 81.66% wheat seed germination (%) 84.48 cm plant height, 16.08 cm spike length, 43.33 grains spike-1, 3.97 g grain weight spike-1, 47.82 g seed index (1000 grain weight, g) value and 4059 kg ha^-1 grain yield; while the weed density 33.33 m-2 was recorded  20 days after sowing, 11.00 m-2 weed density at maturity ,  weed fresh weight 61.00 g m-2, 11.71 weed dry weight m-2 with highest weed control percentage 50.42 . On the basis of weed control percentage, the treatments Chenopodium album concentration 60% ranked 2^nd, C. album + C. Arvensis conc. 30 + 30% ranked 3^rd, Convolvulus arvensis concentration 30% ranked 4^th and Chenopodium album concentration 30% ranked 5^th. Hence, it was concluded that for achieving promising weed allelopathic effects on wheat production and weed suppression, the water extract of Convolvulus arvensis may be applied at 60% concentration.

Keywords: Wheat, Response, Weed and Allelopathic