Effects of groundnut and green manure legumes intercropped to maize on the yields of intercrop maize in the forth repetitive
1999
Amnat Suwanarit | Suparb Buranakarn | Jarong Rungchuang | Somporn Thongdang (Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Department of Soil Science)
Field experiment was conducted on Pakchong soil series (Reddish Brown Lateritic Group or Oxic Paleustult) at the National Corn and Sorghum Research Center to examine cumulative effects of annual repetitive intercropping groundnut and green manure legumes to maize for times on the yields of the forth-year intercrop maize. The green-manure legumes studied were thornless mimosa, sword bean, pigeon pea and lab lab. The green manure legumes of each cropping were allowed to grow after harvesting maize ears and were then chopped and ploughed in to the soil about one month before the following annual cropping. From results the present experiment, conclusions were drawn as follows: 1) Among the intercrop systems, the maize-mimosa intercrop system was the best in maize grain production and produced grain of the intercrop maize in the forth-year repetitive cropping that was in the range of 130-204 percent of that of the sole maize system. 2) All of the other maize-legume intercrop systems were comparable to the sole maize system regarding grain yields of the maize in the forth-year repetitive cropping.
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