Yadav S.K.,Central Potato Research Institute |
Yadav S.K.,ICAR CPRI Central Potato Research Station |
Srivastava A.K.,Central Potato Research Institute |
Srivastava A.K.,ICAR CPRI Central Potato Research Station |
And 2 more authors.
Indian Journal of Agronomy | Year: 2014
A field experiment was conducted during autumn seasons of 2011 and 2012 at Central Potato Research Station, Shillong, to study the effect of integrated nutrient management on production of seed tubers of potato (Solanum tuberosum L.) from true potato seed. There were 6 treatments of integrated nutrient management, viz. 100% recommended dose of fertilizers (RDF 120 kg N +52.8 kg P + 50 kg K/ha), 75% RDF and 25% recommended dose of nitrogen (RDN) through farmyard manure (FYM), 50% RDF and 50% RDN through FYM, 25% RDF and 75% RDN through FYM, 100% RDN through FYM and control (without application of fertilizer and manure). Integrated use of synthetic fertilizers and organic manures showed the significant impact on growth and yield attributes of potato. Highest average number (984.2 × 103/ha) and yield of tubers (12.4 t/ha) were recorded with application of 75% RDF through fertilizers and 25% RDN through FYM which was significantly superior over rest of treatments. However, the lowest tuber numbers (478.3 × 103/ha) and tuber yield (3.3 t/ha) were observed in control plot (no application of any nutrients). Similarly, the maximum net returns were with application of 75% RDF and 25% RDN through FYM. The application of 100% RDN through FYM on nitrogen basis significantly improved soil-fertility status over 100% RDF through fertilizers and control plot but remained at par with other integrated nutrient sources. Application of 75% RDF through synthetic fertilizers and 25% RDN through FYM was more remunerative for sustainable production of potato. © 2014, Indian Society of Agronomy. All rights reserved. Source