Utilization of Alfalfa (Mediacago sativa L.) Whey as a Fertilizer in Irrigation

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  • アルファルファ除蛋白液の液体肥料としての利用
  • アルファルファ除蛋白液の液体肥料としての利用〔英文〕
  • アルファルファ ジョ タンパクエキ ノ エキタイ ヒリョウ ト シテ ノ リヨ

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Abstract

Most of the legume crops need adequate fertilization to maintain high herbage yields. 'Whey' a by-product in alfalfa leaf protein production pilot plant was utilized as a fertilizer in irrigation. The effect on seed germination, plant growth and root nodule development in legume crops like cowpea (Vigna sinensis L.), green gram (Phaseolus aureus Roxb.) and groundnut (Arachis hypogea L.) were studied in laboratory and glasshouse conditions. In laboratory, seed germination and root length were decreased as the concentration of whey increased. However, a slight increase in shoot length was observed at 10% concn. (diluted 10 times) of whey. Inhibitory effects at higher concentrations of whey were also confirmed in glasshouse. Cowpea and groundnut were not so affected by being whey supplied at 20%, but green gram was damaged. It is observed that, higher concentrations of whey caused growth retardation, plant damage or death. Probably 10% or below concentration of whey and less number of applications would be useful as a fertilizer in irrigation.

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