| Abstrakt: |
Background and Objective: Considering the extensive cultivation of wheat in the drylands of Kermanshah province and farmers' lack of proper management of plant residues, it is necessary to think of a solution for the appropriate management of residues and wheat cultivation. For this purpose, an experiment was conducted to investigate the effect of different tillage systems on soil physical characteristics and quantitative traits of varying wheat cultivars in the drylands of the Dalahoo region. Materials and Methods: A split-plot experiment was conducted using a randomized complete block design with three replications. Tillage systems (conventional, reduced, and no-tillage) were investigated as main plots, and 26 wheat genotypes were analyzed as secondary plots. Soil physical characteristics and wheat yield and yield components were also investigated. Results: The results showed significant changes in the physical characteristics of the soil, the change of soil organic matter, and the yield and yield components of wheat. They were affected by tillage systems, genotype, and the interaction effect of tillage in genotype. The results showed that with increasing depth, soil temperature decreased, and soil moisture increased. Conclusion: In no-till cultivation, the change of soil organic matter was less than in other tillage systems. The highest wheat grain yield (6658 kg.ha-1 ) was under the interaction effect of the Mirzabey (Durum) genotype (genotype 24) in the no-tillage system. Conservation tillage proves the importance of residues on the soil surface in maintaining moisture in drylands, and probably in Dalahoo areas, conservation tillage methods are better for improving yield. [ABSTRACT FROM AUTHOR] |
