The effect of winter cover crops on some soil biological properties

امن زاده, حسین and عبادی, علی and آل ابراهیم, محمدتقی and احمدنیا, فاطمه The effect of winter cover crops on some soil biological properties. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

In order to study the effect of winter cover crops on some soil biological properties, an experiment was conducted in the research farm of Mohaghegh Ardabili University in 2018. Experimental treatments included barley (Hordeum vulgare L.) and hairy vetch (Vicia villosa L.). The amount of seed consumed for barley and hairy vetch was 250 and 150 kgha-1, respectively. The results showed that the highest (524 gm-2) and lowest (243.47 gm-2) dry biomass of cover crops were obtained from barley and hairy vetch respectively. The highest percentage of soil organic matter was obtained from hairy vetch monoculture (1.16%) and hairy vetch + barley (1.15%). The lowest percentage of soil organic matter (0.6%) was related to control treatment (without cover crop). The highest soil microbial population was obtained from barley + hairy vetch (2600000 number/g) and the lowest control without cover (640000 number/g). Intercropping of barley and hairy vetch had a good effect on soil micro-organisms activities and increased soil organic matter content. It is concluded from these results that cover crops have a favorable effect on improving soil biological conditions.

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