The experiments were conducted at the Pulses Research Centre, Ishurdi, Pabna, Bangladesh during the 2005-2006 and 2006-2007 crop seasons to determine the economic viability of planting legumes for both vegetable and f...The experiments were conducted at the Pulses Research Centre, Ishurdi, Pabna, Bangladesh during the 2005-2006 and 2006-2007 crop seasons to determine the economic viability of planting legumes for both vegetable and forage purposes in the fallow period between monsoon-rice and spring-rice. The objectives were to ensure better land utilization, break up the mono cropping, improve soil health, and generate extra-income for small and resource-poor farmers of Bangladesh. Crop compositions used in the experiments were monsoon-rice （cv. BRRIdhan-32, BRRldhan-39 and BINAdhan-4） followed by pulses （grasspea, chickpea and field pea） followed by spring-rice （cv. BRRldhan-28, BRRldhan-29 and BINAdhan-6）. Based on the data from two years in a pooled analyses, it was observed that monsoon-rice variety BINAdhan-4, followed by field pea （as vegetable ＆ forage） and spring-rice variety BINAdhan-6 produced the highest yields of 5.0 t ha-1 rice grain, 3.25 t ha1 （green vegetable） ＋ 18.1 t hal （forage） legumes and 7.8 t ha~ rice grain, respectively. The cropping pattern of monsoon-rice （BINAdhan-4）-field pea （as vegetable ＋ forage）-spring-rice （BINAdhan-6） gave the highest net return of USD$1,705 hal year-~ compared to other patterns with different rice varieties and chickpea and grasspea. This is a new finding, and is being practiced by farmers of Bangladesh who have enhanced their farm income substantially. This has also generated job opportunities for rural women to pick the green vegetable of field pea.展开更多
To better understand the role of organic matter(OM)prepared from chicken manure and agriculture residues compost on the growth of plants(Lepidium sativum L.)and antagonistic fungi(Trichoderma harzianum),we analyzed th...To better understand the role of organic matter(OM)prepared from chicken manure and agriculture residues compost on the growth of plants(Lepidium sativum L.)and antagonistic fungi(Trichoderma harzianum),we analyzed the structure and composition of extracted OM using fluorescence excitation-emission matrix(EEM)spectroscopy and solid-state13C cross-polarization magic-anglespinning nuclear magnetic resonance(13C CPMAS NMR)spectroscopy.The results showed that the EEM contours of water-extracted OM(WEOM)and alkali-extracted OM(AEOM)were similar.Furthermore,solid-state13C CPMAS NMR spectroscopy demonstrated that water extraction could not proportionally pull out aromatic moieties(112–145 ppm)from compost,but the alkali method in proportion extracted both carbohydrates(65–85 ppm)and aromatic moieties.The results suggest that AEOM may better reflect the bulk OM composition of compost,and one should be cautious when applying WEOM as an alternative indicator of total compost OM.Further investigations demonstrated that,compared to carbohydrates,aromatic moieties played a predominant role in growth suppression of Lepidium sativum L.seeds and Trichoderma harzianum.展开更多
文摘The experiments were conducted at the Pulses Research Centre, Ishurdi, Pabna, Bangladesh during the 2005-2006 and 2006-2007 crop seasons to determine the economic viability of planting legumes for both vegetable and forage purposes in the fallow period between monsoon-rice and spring-rice. The objectives were to ensure better land utilization, break up the mono cropping, improve soil health, and generate extra-income for small and resource-poor farmers of Bangladesh. Crop compositions used in the experiments were monsoon-rice （cv. BRRIdhan-32, BRRldhan-39 and BINAdhan-4） followed by pulses （grasspea, chickpea and field pea） followed by spring-rice （cv. BRRldhan-28, BRRldhan-29 and BINAdhan-6）. Based on the data from two years in a pooled analyses, it was observed that monsoon-rice variety BINAdhan-4, followed by field pea （as vegetable ＆ forage） and spring-rice variety BINAdhan-6 produced the highest yields of 5.0 t ha-1 rice grain, 3.25 t ha1 （green vegetable） ＋ 18.1 t hal （forage） legumes and 7.8 t ha~ rice grain, respectively. The cropping pattern of monsoon-rice （BINAdhan-4）-field pea （as vegetable ＋ forage）-spring-rice （BINAdhan-6） gave the highest net return of USD$1,705 hal year-~ compared to other patterns with different rice varieties and chickpea and grasspea. This is a new finding, and is being practiced by farmers of Bangladesh who have enhanced their farm income substantially. This has also generated job opportunities for rural women to pick the green vegetable of field pea.
基金Supported by the National Basic Research Program(973 Program)of China(No.2011CB100503)the National Natural Science Foundation of China(No.21007027)+1 种基金the Qing Lan Project of Jiangsu Province,Chinathe National"111"Project of China’s Higher Education(No.B12009)
文摘To better understand the role of organic matter(OM)prepared from chicken manure and agriculture residues compost on the growth of plants(Lepidium sativum L.)and antagonistic fungi(Trichoderma harzianum),we analyzed the structure and composition of extracted OM using fluorescence excitation-emission matrix(EEM)spectroscopy and solid-state13C cross-polarization magic-anglespinning nuclear magnetic resonance(13C CPMAS NMR)spectroscopy.The results showed that the EEM contours of water-extracted OM(WEOM)and alkali-extracted OM(AEOM)were similar.Furthermore,solid-state13C CPMAS NMR spectroscopy demonstrated that water extraction could not proportionally pull out aromatic moieties(112–145 ppm)from compost,but the alkali method in proportion extracted both carbohydrates(65–85 ppm)and aromatic moieties.The results suggest that AEOM may better reflect the bulk OM composition of compost,and one should be cautious when applying WEOM as an alternative indicator of total compost OM.Further investigations demonstrated that,compared to carbohydrates,aromatic moieties played a predominant role in growth suppression of Lepidium sativum L.seeds and Trichoderma harzianum.
