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Mr. Ra first started growing leguminous cover crop to make insoluble P in the field soluble. He had read that some microbe associated with N-fixing bacteria in legumes could do that. 
 

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But the benefit was not just increased P fertiilizer. He could control weeds and add organic matter to the soil!
 
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Other articles by Kyongho KimInterviewed on : 2016.07.26 15:52

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