Abstract
A field experiment was carried out at the Warka extension farm affiliated to the Agricultural Extension Department in the Ministry of Agriculture (north of Muthanna) during the winter season 2022-2021 (15 km from the center) in order to know the effect of different planting dates on the qualitative characteristics and grain yield of several combinations of coarse wheat. The experiment was applied using the Split Plot Design method and using the complete sectors design (R.C.B.D) and with three replications. The four sowing dates (1/11, 10/11, 20/11 and 30/11) occupied the main plates, while the genotypes (G1133, G65 and G1105 and G1229 and the approved variety for comparison. bohoth-7) Secondary panels. Split Plots. The results showed that the first date D1 (1/11) outperformed the grain protein, specific weight and dry gluten, which averaged 14.100%, 79.83 kg/ha and 9.55%, respectively. While the second date D2 (10/11) outperformed the grain yield 4.54 tons/ha. In succession and the fourth date, D4 (30/11) was superior in wet gluten content, which amounted to 28.59%, while the local cultivar Buhouth-7 was superior in grain protein with an average of 13.633%, while the genotype G1229 was superior in specific weight and content of wet gluten and dry gluten, which averaged 80.83 kg/hectoliter, 28.80% and 9.600%.
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