Effect of Residue Recycling on Leaf Area Index and Nutrient Uptake Pattern of Wheat Crop under different Potassium Management Practices

Author: Kajal Arora, Ram Swaroop Bana, Seema Sepat, Bhagyashree Phogat, Preeti Devatwal and Sunder Anchra

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Abstract

Crop residues management and balanced nutrition of crops are important techniques for sustaining the diverse agricultural production systems. In this context, the present work is planned to find out the approaches to increase the resource use efficiency by crop residue reuse i.e, by alternating the potassium application with efficient crop residue management. Therefore, a field experiment was conducted at the Research Farm of the ICAR-Indian Agricultural Research Institute (IARI), New Delhi during Rabi seasons of 2020-21. The experiment was laid out in split-plot design with three replications having single wheat cultivar HD 3086 with three residue management treatments in (no residue, Maize residue incorporation @ 3t/ha and Maize residue retention @ 3t/ha) main plot and five potassium management practices in [Control (no application of fertilizer, K1), 50% of RDK (K2), 100% of RDK (K3), 50% of RDK (½ basal + ½ top dress at 25 DAS, K4) and 100% RDK (½ basal + ½ top dress at 25 DAS, K5)] sub plots. Results indicated that the crop residue retention @ 3t/ha recorded the higher LAI along with the split application of 100 % recommended dose of potassium (½ at basal + ½ top dress at 25 DAS). Similarly, maximum NPK uptake both in grain and straw of wheat was observed with crop residue incorporation @ 3t/ha with the split application of 100 % RDK.

Keywords

Crop residue, Nutrient uptake, Potassium management, Soil fertility

Conclusion

On the basis of one year study it was concluded that the Leaf area Index was significantly affected with residue and potassium management treatments. Similarly, the maximum nutrient uptake was also improved after harvest of crop as a result of residue application and balanced nutrition of the crop. Therefore, based on the results it can be established that the crop residue retention with split application of 100% recommended dose of potassium can be a better approach to increase resource use efficiency by crop residue reuse and optimum fertilizer applications.

References

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How to cite this article

Kajal Arora, Ram Swaroop Bana, Seema Sepat, Bhagyashree Phogat, Preeti Devatwal and Sunder Anchra (2023). Effect of Residue Recycling on Leaf Area Index and Nutrient Uptake Pattern of Wheat Crop under Different Potassium Management Practices. Biological Forum – An International Journal, 15(2): 414-419.