Effect of Sorghum Bicolor and Sunflower Residue Quantities on Growth and Yield of Wheat Triticum aestivum L. and Accompanied Weed

A field experiment was carried out at the research station of the Field Crops Department - the College of Agriculture - Tikrit University during winter season 2022-2023 with an aim of studying the effect of the residues of some summer crops such as white corn and sunflower on the germination and growth of winter bushes growing with the wheat crop and the effect of this on the growth and yield of the wheat crop. The experiment was applied using a completely randomized block design RCBD, with three replicates and two factors, the first is the white corn residue, the sunflower residue, and weed killer, and the second is the amount of residue, which is without residue, adding 1.5 tons/Hectare Adding 3 tons/Hectare For both types, related traits were studied in the jungle it included (plant density, percentage of control, and dry weight of bush plants), wheat traits that included growth traits such as (plant height, leaf area, and total number of shoots), and also included yield traits and its components (number of ears and number of grains). With the spike and the weight of 1000 pills, the result) and the results were as follows: -Low plant density For the jungle When sunflower residues (3 tons) were added with white corn residues (3 tons), there was a significant decrease compared to the rest of the treatments. The percentage of control increased with combined treatment between the pesticide and sunflower residues, and the increase was highly significant. The leaf area of wheat plants increased significantly in the treatments in which the bush density decreased. All yield traits and components, except for the number of grains per ear, increased significantly in the treatments that contained both types of residues (sunflower + white corn) compared to the treatments that contained one type.