Mung bean (Vigna radiata L.) growth, yield and nitrogen uptake as influenced by blood meal

Animal blood is a rich source of nitrogen and iron and is a cheap and available substrate of high nutritional and functional quality. Because of high protein content, about 18% blood is regarded  as high, valuable proteins source; sometimes it is referred as- liquid protein (Bari et al., 2015). Hundreds of millions of animals are slaughtered each year all over the world. A huge amount of blood is generated every day. Only a small portion of which are used in different areas while  maximum is wasted. As it gets mixed, it pollutes canal and river water. It decreases dissolved oxygen level in the water and threatens aquatic lives. Of all slaughterhouse waste products, the waste in the form of blood has the highest polluting value. Although much information on the chemical structure and composition of blood meal is available from biochemistry studies, knowledges about its application as organic fertilizer and its influence on soil organic matter and soil fertility are limited. Sustainable agriculture requires the careful optimization of the use of organic amendments to improve soil fertility while minimizing any harmful environmental effects. Steady supplement of organic amendment increases soil total N content and microbial biomass carbon. These natural nutrients promote the growth of beneficial soil microorganisms, decompose biomass, and indirectly provide NPK and other nutrients available to plants through the crop mung bean. The objective of the study is to evaluate the effect of blood meal on growth, yield and nitrogen uptake of Mung bean  (Vigna radiata L.)

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