Influence of post-emergence herbicides on major grass weeds and wheat (Triticum aestivum L.) at Gedo and Shambo, Western Oromia

• Main Authors: Megersa Kebede, Geleta Gerama, Tigist Bidira, Chemeda Birhanu
• Format: Article
• Language: English
• Published: Communications in Plant Sciences 2017-12-01
• Series: Communications in Plant Sciences
• ISSN: 2237-4027; 2237-4027

A field experiment was conducted to evaluate post-emergence herbicides for weed management and grain yield of wheat at Shambo and Gedo, Sub-station of Bako Agricultural Research center during summer season of 2014/2015. The experiment was laid out in randomized complete block design with three replications. The treatments consisted of four post-emergence herbicides; Pyroxsulam, Fenoxaprop-p-ethyl 6.9%, Clodinafop-propargyl and Pinoxaden 45 g L-1 + Cloquintocet Mexyl, and Hand weeding and weedy check were used for comparison. Results of the experiment depicted that Significantly lowest total weed population (11.33 m-2) and (11.00 m-2) and maximum grain yield of (3460.3 and 3254.0 kg ha-1) with (56.9 and 51.7%) increase in grain yield over weedy check was recorded in Plots treated with Pyroxsulam at the rate of 0.5 L ha-1 at Shambo and Gedo sites, respectively. Additionally, the lowest total weed dry weight of (5.8 and 5.2 g m-2) with highest herbicide control efficiency (75.9% and 77.3%) was recorded for Pyroxsulam followed by two times hand weeded plot at these respective locations. In contrary, the highest weed population (45.20 m-2) and (45.53 m-2) and lowest grain yield (1492.1 kg ha-1) and (1571.4 kg ha-1) was obtained from weedy check at Shambo and Gedo, respectively. Thus, from the result Pyroxsulam was recommended as effective and feasible post-emergence herbicide to control major grass and other weed species in a wheat field in study areas.