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Effect of Integrated Nitrogen Management Practices on the Productivity and Tuber Quality of Potato (Solanum tuberosum L.)

By Shreya Nautiyal1 , Shivvendra Singh1 *, Rashmi Sharma1 , Manpreet Singh Preet1 and Neeraj Singh2 | 03-08-2023 | Page: 21-27

Abstract

The present investigation was carried out at agriculture research farm-ISBT of Graphic Era Hill University, Dehradun, Uttarakhand during the Rabi season of 2021-22. The field experiment was laid out with six integrated nutrient management treatments viz., T1- No RDN (control), T2-100% RDN-Urea, T3-100% RDN through vermicompost, T4-75% RDN through urea + 25% RDN through vermicompost, T5- 50% RDN through urea + 50% RDN through vermicompost and T6-25% RDN through urea + 75% RDN through vermicompost in randomized block design with three replications. The experiment was laid out to evaluate the impact of integrated nitrogen management practices on the productivity and tuber quality of potato cultivar viz., Kufri Frysona. The significant increase tuber yield was recorded under treatment T3 (11.5 t ha-1) followed by T2 (11.0 t ha-1) and T6 (10.1 t ha-1) which was 70, 65 and 53% higher over control (T1), respectively. Moreover, the tuber quality (processing qualities) were also considerably improved with the inclusion of organics nitrogen sources application. The tuber processing qualities viz., starch content, reducing sugar, tuber dry matter and specific gravity were positively enhanced in treatments T3>T2>T6. Reducing sugar, starch and dry matter being significant properties for industrial usage recorded with T3 were 28 and 12% lower, respectively while dry matter content was higher by 49%. The application of 100% RDN through vermicompost yielded higher than the control and 100% RDN through commercial urea which may also impart soil health improvement besides sustaining productivity in long run.

Keywords

Potato, crop nutrition, integrated nitrogen management, productivity, tuber quality

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