Effect of winter cover crops on some physical properties of soil

نصیری سقرلو, محمد and عبادی, علی and اصغری, شکراله and قهرمانی, صغری Effect of winter cover crops on some physical properties of soil. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

Cover crops have important role on improving soil fertility. In order to investigate the effects of winter cover crops on some physical properties of soil, a randomized complete block design with three replications was conducted at Research Farm of Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili in 2018. Experimental treatments consisted of mono culture of and oat (Avena sativa) and radish (Raphanus sativus var. Longipinnatus) with seed rate of 70 and 3 kg / ha, respectively. The results showed that the highest biomass of cover crops was obtained from oat oat (486.66 g / m2) and radish (427.38 g / m2). Also, the highest percentage of stored water in soil at depths of 0 to 15 and 15 to 30 cm belonged to radish (12.12 and 10.52%, respectively). In the depth of 30 to 45 cm of soil, the highest percentage of soil water content (10.5%) was obtained from oat + radish. The bulk density of the soil was not influenced by winter cover crops. The results of this study suggest that winter-cover crops have a significant effect on the conservation and increase of water storage in the soil.

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