Abstract:
Significant effect of row spacing and weeding techniques in different combinations on wheat cultivar “GA-2002” was obtained in a field trial conducted at Experimental Farms of University of Arid Agriculture, Rawalpindi during Rabi season, 2004-05.The experiment was laid out in randomized complete block design with two factors under split plot arrangement having three replications. The row spacings were comprised of 15 cm, 22.5 cm and 30 cm apart and there were six weeding techniques viz. weedy check, hand weeding, chemical control, bar harrow 2–way, hoe and bar harrow 1-way. Hand weeding and chemical control with different spacing combinations showed significant effects on weed density, weed mortality percentage, plant height, tillers/m2, spike length, 1000 grain weight, biological yield and grain yield of wheat. 15 cm spacing arrangement significantly enhanced grain yield. The interaction between weeding techniques with row spacing arrangements was found significant for grain yield only. The highest wheat crop yields of 5448 and 5970 kg ha-1 were achieved by using hand weeding and chemical weed control along with 15 cm row spacing arrangement that caused significant increase over weedy check with 30 cm spacing by 133.93 % and 113.47 %, respectively. The highest net benefit was attained in chemical application to control weeds which was 25,605 PKR and the same highest was observed in chemical control in benefit cost ratio analysis which was 1.79.
Page(s):
183-198
DOI:
DOI not available
Published:
Journal: Pakistan Journal of Weed Science Research, Volume: 20, Issue: 2, Year: 2014