Determine the Competitive Ability of Some Sorghum Cultivars by the Effect of Weed Control Treatments

Abstract

A field experiment was carried out in 2021 during the autumn season in soil with a mixture texture in Anbar Governorate, Ramadi District in research station of college of agriculture, university of Anbar in Al-Hamidiyah region. To study the effect of the competitive ability of some sorghum cultivars in the accompanying weeds with the impact of weed control treatments, The experiment was included three hoeings (hoeing once, hoeing twice, and hoeing three times) in addition to the control treatment with three cultivars of sorghum (Lilo, Angath and Rabeh). The experiment was designed according to a randomized complete block design (RCBD) and in the arrangement of split plots and three replications, as the hoes were at main plots while cultivars were at subplots. The results were as follows. Data showed a significant effect of the study factors in the studied traits, the number of weeds, and their dry weight, whether three times of hand weeding gave the highest plant height (194.87 cm), 500-grain weight (19.22 g), grain yield 8.85-ton hectare-1. As for the cultivars, the cultivar recorded the highest average of the leaf area (5900 cm2 plant-1) and the percentage of protein (8.48%).