Phosphorus and Potassium Fertilization with different Levels on the Growth and Yield of Summer Green gram (Vigna radiate L.) varieties

Author: N. Anthony Baite, D. Nongmaithem, Saya D., Sentisuba and Imnatenjen Aier

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Abstract

Green gram, an important legume crop cultivated globally, relies on adequate phosphorus (P) and potassium (K) for optimal growth, development, and yield. However, determining the appropriate fertilization rates for maximizing green gram productivity remains a challenge. Thus, this research aimed to identify suitable P and K fertilization rates for green gram under Nagaland soil conditions, as well as evaluate different varieties. The study employed a factorial randomized block design replicated thrice. The experiment consisted of two factors: green gram varieties (cv. IPM02-3, cv. SGC-20, and cv. SGC-16) and combined P and K fertilizers applied at varying rates (40, 50, and 60 kg/ha each of P2O5 and K2O). Increasing P and K fertilization rates resulted in a linear increase in growth attributes, yield, and stover yield. The highest seed yield was obtained with the application of 60-60 kg/ha P2O5-K2O. Nonetheless, the 50-50 kg/ha P2O5-K2O treatment yielded 48.7% higher than the control, demonstrating statistical similarity with the highest yield. Among the varieties, IPM 02-3 outperformed the other tested varieties. These findings contribute valuable insights for optimizing green gram production by guiding appropriate fertilization practices and variety selection.

Keywords

Green gram, Growth, Levels, Phosphorus, Potassium, Yield

Conclusion

Results from the study gave a hint that different fertilization rates of phosphorus and potassium had varying degrees of interaction with the crop leading to different outcomesconcerning growth and yield. Application of P and K nutrientshad a positive role in increasing the plant attributes such as plant height, LAI, and dry matter which in turn had a positive correlation with seed yield and stover yield. It can be concluded that increasing the fertilizer doses of phosphorus and potassium to 60 kg/ha to boost the production need not necessarily be done as 50 kg/ha could bring almost better crop performance and also increase profitability. Further, the adoption of green gram cv. IPM 02-3 under Nagaland conditions in the summer season will be beneficial owing to the better adaptability.

References

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How to cite this article

N. Anthony Baite, D. Nongmaithem, Saya D., Sentisuba and Imnatenjen Aier (2023). Phosphorus and Potassium Fertilization with different Levels on the Growth and Yield of Summer Green gram (Vigna radiate L.) varieties. Biological Forum – An International Journal, 15(7): 256-260.