Effect of Residual Nutrients of Potato Crop on Growth, Yield Attributing Characters and Yields of Spring Maize (Zea mays L.)

Author: Shekhar Singh, U. P. Shahi, Sandeep Kumar Verma, Sudhir Kumar Singh, Vivek Kumar, Vaishali Singh and Bhhavya Thakur

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Abstract

The present investigation was conducted on maize crop in spring season of 2020-21 at the Crop Research Centre, Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut-250110. The soil of experimental field was sandy loam in texture and slightly alkaline in reaction. The soil was low in available nitrogen and sulphur, medium in phosphorus and potassium. The experiment consisting 13 treatments in previous potato crop viz., T1 (RDF NPK and S (Common fertilizers), T2 (RDF N and P (no-K, no-S) (Common fertilizers), T3 (RDF NP and S (no-K) (Common fertilizers), T4 (RDF NP and K (no-S) (Common fertilizers), T5 (RDF NP and 50% of RDF K by POLY-4), T6 (RDF NP +100% POLY-4), T7 (RDF NP and 150% of RDF K by POLY-4), T8 (RDF NP+ 50% of RDF K by MOP + 50% of RDF S equal to T5 by Bentonite), T9 (RDF NP+ 100% of RDF K by MOP+100% of RDF S equal to T6 by Bentonite), T10 (RDF NP+ 150% of RDF K by MOP + 150% of RDF S equal to T7 by Bentonite), T11 (RDF NP and 25% K by MOP + 75% by POLY-4), T12 (RDF NP and 50% K by MOP + 50% by POLY-4), T13 (RDF NP and 75% K by MOP + 25% by POLY-4) was laid out in randomized block design with three replication. Only 75% of recommended dose of N & P was applied in maize crop to observe the residual effect of previously applied nutrients. The findings of experiment revealed that the growth attributes like plant height, functional leaves per plant, chlorophyll content (SPAD Value) and yield attributes i.e. grain yield was maximum with application of RDF NP and 150% of RDF K by POLY-4 (T7) followed by RDF NP and 25% K by MOP + 75% by POLY-4 (T11) applied in previous crop. Polyhalite was superior over common fertilizer MOP. Residual effect varied due to source of potassium application and polyhalite was found better than MOP. Super optional application of K to preceding crop resulted in more residual effect therefore it may be concluded that nutrient management should be consider on cropping sequence basis rather than single crop and polyhalite may be a good source for potassium.

Keywords

Polyhalite, Residual effect, SPAD, Bentonite and Chlorophyll content

Conclusion

From the result it was found that residual effect varied due to source of potassium application and in this study polyhalite was found better than MOP. Secondary, super optional application of K to preceding crop resulted in more residual effect therefore it may be concluded that nutrient management should be consider on cropping sequence basis rather than single crop and polyhalite may be a good source for potassium.

References

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How to cite this article

Shekhar Singh, U. P. Shahi, Sandeep Kumar Verma, Sudhir Kumar Singh, Vivek Kumar, Vaishali Singh and Bhhavya Thakur (2023). Effect of Residual Nutrients of Potato Crop on Growth, Yield Attributing Characters and Yields of Spring Maize (Zea mays L.). Biological Forum – An International Journal, 15(9): 712-719.