Effect of combine use of organic manures and inorganic fertilizer on nitrogen fixation and performance of cowpea crown in sandy regosol

Effect of combine use of organic manures and inorganic fertilizer on nitrogen fixation and performance of cowpea crown in sandy regosol

Hamilda Hemananthy, Thevanayagam
URI: http://www.digital.lib.esn.ac.lk/handle/123456789/2508
Date: 2014

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