Selection of the most Suitable Crop Rotation in Aras River Margin, Based on Assessing Soil Qualitative Indicators
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Soil quality appraisal is essential for sustainable agricultural production and should provide some information for decision. In this means soil quality indicatorsare introduced as criteria for assessment. This research was conducted to determine a suitable crop rotation system in parsabad region of Ardabil province, based on diffrent soil quality indicators.Three adjacent sites under rice cultivation that their second cultivation were fallow, clover and wheat with at least 4 consecutive years under this crop rotation, were selected. Soil sampling was performed on a random pattern from depth of 0-50 cm (30samples in each plot) after secend cultivation harvest. Statistical results revealed that the frequency distributions of all variables were normal. pH and microbial biomass (C) had the lowestand highestCV among the three selected rotations respectively. Analysis of Variance (ANOVA) and comparison test revealed that there were significant differences between the soil quality indicators. Organic matter content, total nitrogen, microbial respiration, cation exchange capacity, aggregates’ mean weight diameter and microbial biomass C were significantly greater in Rice-clover rotation systems than those in the other systems. However, bulk density and textural fractions components were not significantly different in the crop rotation systems.Overall results of this research showed that the ricerotation with legumes such as clover over a long time improved the soil quality.
Language:
Persian
Published:
Journal of Water and Soil Science, Volume:28 Issue: 4, 2018
Pages:
155 to 165
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