Agroecological study of wheat double cropping systems in conventional, sustainable and organic production agricultural systems

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Gorooei َAram; Aynehband Amir; Rahnama Afrasyab

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Journal Paper

Paper Information

Journal: Iranian Journal of Field Crop Science Year:2021 | Volume: | Issue: Page(s): 145-156

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Information Journal Paper

Title

Agroecological study of wheat double cropping systems in conventional, sustainable and organic production agricultural systems

Author(s)

Gorooei َAram | Aynehband Amir | Rahnama Afrasyab | Issue Writer Certificate

Keywords

Organic agricultureQ4

remobilizationQ4

SesameQ4

Soil Organic CarbonQ4

wheat grain yieldQ4

Abstract

This study was conducted during summer and winter of 2018- 2019 in the agricultural research field of Shahid Chamran University. Experimental design was split- plot based on RCBD with three replications. The main plot was the type of agricultural system in three levels including conventional (Conv), organic (Org) and sustainable (Sust) (integrated between Conv and Org) and sup- plot was the type of pre- cultivated crop in sequence with wheat including cultivation of mung bean (M- W), corn (C- W), Sesame (S- W) and fallow (F- W). Yield quantity (yield and its component) and quality (grain protein), an estimate of photosynthesis matter transfer index of wheat and Soil Organic Carbon (SOC) after one double-cropping were measured. The result showed that the highest (545.04 g/m2) and the lowest (409.28 g/m2) seed yields were obtained in Conv and Org respectively. In contract, with the changing type of system from Conv to Org, grain protein was increased significantly (from 8.3 to 9.6 %). In addition, the highest (535.47 g/m2) yield of wheat was obtained from M- W double cropping. On the other hands the highest remobilization and current photosynthesis matter were obtained in the organic agricultural system with M- W and conventional with M- W double cropping. The situation of SOC showed that the highest (33.18 mg/g) SOC was obtained in the organic agricultural system with C- W double cropping. The reason for improving SOC in the organic and sustainable agricultural system was application of organic matter (compost and vermicompost) and crop residue management. Totally, from the crop ecology point of view, sustainable agricultural method with a sequence of M- W was the most desirable system.

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