The effect of different tillage systems on the physical characteristics of the soil and the quantitative traits of different wheat varieties of the dry lands of Dalahoo region

Document Type : Research Paper

Authors

1 Msc. of Ecology (Agroecology) Department, Razi University, Kermanshah, Iran.

2 Assistant Professor, Department of Plant Production and Genetics, Faculty of Agricultural Sciences and Engineering, Razi University, Kermanshah, Iran

3 Associate Professor, Department of Soil Science, Razi University, Kermanshah, Iran.

4 Dept. of Agronomy and Plant Breeding, Faculty of Science and Agriculture Engineering, University of Razi, Kermanshah, Iran

5 Associated Professor, Dryland agricultural research sub-institute, Kermanshah Iran

Abstract

Background and Objective: Considering the extensive cultivation of wheat in the drylands of Kermanshah province and the lack of proper management of plant residues by farmers, it is necessary to think of a solution for the proper management of residues and wheat cultivation. For this purpose, an experiment was conducted with the aim of investigating the effect of different tillage systems on soil physical characteristics and quantitative traits of different wheat cultivars in the drylands of Dalahoo region.

Materials and Methods: A split-plot experiment was conducted in the form of a randomized complete block design with 3 replications. Tillage systems (conventional tillage, no-tillage, reduced tillage) were investigated as main plots and 26 wheat genotypes as secondary plots. Soil physical characteristics and wheat yield and yield components were investigated.

Results: The results showed the physical characteristics of the soil, the change of soil organic matter, and the yield and yield components of wheat significantly. They were affected by tillage systems, genotype, and 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 other tillage systems. The highest amount of wheat grain yield (6658 kg/ha) was under the interaction effect of Mirzabey (Durum) genotype (genotype 24) in 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.

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Main Subjects


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