Soil Fertility Conservation for Sustainable Maize Production
A long term experiment on soil fertility conservation was conducted at Nakhon Sawan Field Crops Research Center (NSFCRC) on brown forest soil (Typic Haplustools; very-fine monmorillonitic) from 1999～ 2004. Objective of the experiment was to investigate a suitable cropping system for maize-growing farmers in order to conserve soil fertility. Results showed that mungbean-maize system was suitable for farmers with planting mungbean and applying chicken manure at the rate of 6.25t/ha followed by planting maize and applying chemical fertilizer at the rate of 62Nkg/ha at 21 days after planting. Marginal rate of return (MRR) of mungbeanmaize applied with fertilizers compared with that of no fertilizer application was 110％. From soil analysis in 1999 and in 2004, it was found that applying chicken manure at the rate of 6.25t/ha resulted in an increase of soil organic matter, phosphorus and potassium.
Soil fertility Conservation Sustainable Cropping system Chicken manure Marginal rate of return (MRR)
Chollawuth La-ied
Nakhon Sawan Field Crops Research Center, Department of Agriculture Phaholyothi Road, Nakhon Sawan 60190. Thailand
国际会议
第九届亚洲玉米大会(the Ninth Asian Regional Maize Workshop)
北京
英文
358-361
2005-09-05（万方平台首次上网日期，不代表论文的发表时间）