Integrated Nitrogen Management Strategy for Growth and Yield of Cashew (Anacardium occidentale L.)

Author: S.V. Patil, Nagaraja, G., Manjunath R., Rajakumar G.R. and Adiga, J.D.

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Abstract

Cashew crop is facing many challenges related to its nutrition and yield. Hence, to address the issue, the present study was carried out at Regional Horticulture and Extension Centre, University of Horticultural Sciences Campus, GKVK, Bengaluru, Karnataka during the years 2016-17, 2017-18 & 2018-19 by employing factorial randomized complete block design with 13 treatments and three replications to the nitrogen management strategies for the growth and yield of cashew nut. The growth parameters like trunk girth, plant height and canopy spread didn’t show any significant difference among the sources and different combinations levels, whereas the number of flowering laterals per square meter and cashew nut yield per plant was significantly higher in 100 % RDN through vermicompost. Among levels of applications, 50 % organic and 50% inorganic combination recorded significantly higher number of flowering laterals per square meters and cashew nut yield per plant compared to other levels of

Keywords

Integrated nitrogen management, cashew, vermicompost.

Conclusion

The research aimed at integrating various organic and inorganic sources of nutrients in cashew crop. In the present scenario, organic inputs and practices are becoming costly and challenging. Hence, the present study was conducted to integrate the two different sources. The growth and yield attributes were maximum when 100 % N equivalent was supplied through vermicompost followed by 75% N through vermicompost + 25% N through Urea. Since the cashew is perennial in nature, the application of organic manures helps to improve the physical, chemical and biological properties of the soil thereby better utilization of nutrients supplied through vermicompost would result in getting better yield. Nitrogen availability in the soil due to different interactions increased over a period of study. However, the available phosphorous was found to decline due to various sources and levels of nitrogen. The green leaf manure was superior among the three sources studied. The more availability of potas

References

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How to cite this article

Patil, S.V., Nagaraja, G., Manjunath R.,, Rajakumar G.R., and Adiga, J.D. (2021). Integrated Nitrogen Management Strategy for Growth and Yield of Cashew (Anacardium occidentale L.). Biological Forum – An International Journal, 13(3): 454-459.