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Abstract of the Article

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Composting Method of Agricultural Refuse and Effects of Compost on the Wheat and Corn Yield

Authors:
[ A. Gandomkar ] -
[ Rezae ] - Department of Soil and Water Research, Isfahan Agricultural and Natural Resource Research Center, Isfahan, Iran
[ fathi ] -

Abstract:

Composting is a biological treatment in which aerobic thermophilic and mesophilic microorganisms transform the most easily biodegradable organic matter(OM) into CO2 and H2O, as well as into more stable OM such as humic material. Burning of crop residues terminates soil microorganisms, soil OM, salinization and increased soil erosion. In this research the farmers, experienced the aerobic composting method of wheat, corn, sugar-can refuse and compost effects on wheat and corn yield. Composting was done for 90 days Plant residues cut into to small parts. Fresh animal manure (10%) added to residues as source of microorganisms. The C to N ratio adjusted between 20 – 30 by urea application. Water was then added until a moisture content of approximately 100% (wet basis) was reached. For aerobic decomposition, the residues were converted every two weeks. The compost improved growth and yield of wheat, corn and potato. Wheat seed yield increased 20% in one field and 13.4% in another field. Also corn seed yield, increased 8.7% in one field by compost application. Compost residual effects were determined significantly in the second crops. Producing different kinds of compost and subsidizing, extension compost using in the country and improved soil organic matter.

Keywords:

Agricultural refuse, compost, wheat , corn, burn.