Effect of Bio-stimulants on Biomass Production, Nutrient Content and uptake in Velvet Bean (Mucuna pruriens L.)

Author: Sharanya B.R., Mallikarjuna Gowda A.P., Vasanthi, B.G. and Pushpa K.

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Abstract

Increasing the nutritional profile of legumes offers a desirable aim for reducing the global hunger caused by micronutrient deficiency. For decades, the use of inorganic/synthetic fertilizers has been common practice and accepted as an efficient means to alleviate these problems. However, the application of synthetic chemicals may cause a negative impact on the environment. In view of the increasing awareness of adverse effects of these chemicals and the recent paradigm shift towards ‘green farming’, the use of natural bio-stimulants is becoming popular globally. In this regard, an experiment was conducted at ICAR – Krishi Vigyan Kendra, Hadonahalli, Doddaballapura taluk, Bengaluru Rural District, Karnataka, during rabi 2020 - 2021, to assess the effect of bio-stimulants on biomass production, nutrient content and uptake in velvet bean. Experiment consisted of soil and foliar application of humic acid, amino acid, sea weed extract and microbial consortia based bio- stimulants. The experiment was carried out by adopting randomized complete block design (RCBD) consisting 9 treatments with three replications. Maximum fresh (90.46q/ha) and dry biomass yield (33.91q/ha) was found with RDF + Foliar application of humic acid based bio-stimulant. Whereas maximum nitrogen (2.82 %), phosphorus (0.15 %), potassium content in plant (1.45 %) and nutrient uptake of nitrogen (255.41kg ha-1), phosphorus (13.17kg ha-1), potassium (131.11kg ha-1) and also increased nitrogen (234.92kg ha-1), phosphorus (48.06kg ha-1), potassium content in soil (171.60kg ha-1), were recorded with RDF + Soil application of humic acid based bio-stimulant. Lower biomass production, nutrient content and uptake were found in control.

Keywords

Velvet bean, RDF, Bio-stimulants, biomass production, NPK

Conclusion

Humic acid based bio-stimulant stimulate natural processes to enhance nutrient content and nutrient use efficiency in turn resulted in better nutrient uptake and maximum biomass production.

References

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How to cite this article

Sharanya B.R., Mallikarjuna Gowda A.P., Vasanthi, B.G. and Pushpa K. (2023). Effect of Bio-stimulants on Biomass Production, Nutrient Content and uptake in Velvet Bean (Mucuna pruriens L.). Biological Forum – An International Journal, 15(10): 1056-1060.