Effect of chicken manure and nitrogen fertilizer in sweet corn-mungbean cropping system under no-tillage system in Pak Chong soil series
2006
Phairot Phanphruek(Department of Agriculture, Bangkok (Thailand). Agricultural Production Science Research and Development Office. Soil Science Research Group) | Thammanun Kaewkhongkha(Department of Agriculture, Bangkok (Thailand). Agricultural Production Science Research and Development Office. Soil Science Research Group) | Karun Chitwichot(Department of Agriculture, Bangkok (Thailand). Agricultural Production Science Research and Development Office. Soil Science Research Group)
Field experiment was conducted in Pak Chong soil series at Lop Buri field crops experiment station in 2004 to investigate the effect of chicken manure and nitrogen fertilizer in sweet corn-mungbean cropping system under no-tillage system. The experimental design was a split plot with 5 replications. Main plot consisted of 2 soil preparations: conventional tillage and no-tillage. Subplot were nitrogen fertilizer and chicken manure (CM) applied for sweet corn (1st crop) which were 3 rates of nitrogen: 0, 10, 20 kgN/rai and CM 500 kg/rai + 5 kgN/rai, CM 500 kg/rai + 10 kgN/rai and CM 1000 kg/rai+5 kgN/rai. Phosphate and potash fertilizer were applied at the rate of 10 kg/rai of P2O5 and K2O, respectively. Sweet corn (var. supper sweet) was planted at a spacing of 50*30 cm. 1 plant/hill which a plot size of 4.5*4.5 m. and harvested area 3.5*3 m. Mungbean (var. Chainat 72) was grown at a spacing of 50*30 cm. 3 plant/hill without any fertilizer application. Glyphosate (200 gm./rai) were sprayed for weed control in no-tillage treatment before planting. Resulted from the experiment revealed that nitrogen fertilizer significantly increased sweet corn fresh pod weight. Nitrogen 20 kgN/rai produce highest yield (1515 kg/rai) significantly difference from the plot applied with 10 kgN/rai and treatment CM 500 kg/rai+5kgN/rai. However no significantly difference in corn yield as the effect of treatment CM 500 kg/rai+10 kgN/rai, CM 1000 kg/rai + 5 kgN/rai and 20 kgN/rai were observed. For mungbean (2nd crop) the result showed that CM residual effect significantly increased growth and seed weight. The response rate was 500 kg/rai. No significantly difference as the effect of conventional tillage and no-tillage treatment in sweet corn and mungbean yield were observed.
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