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Vol. 3 No. 1 (2019): International Journal of Applied Biology

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Submitted
Jun 11, 2019
Published
Jun 29, 2019

Effect of seedling age, seeding density and nitrogen fertilizer on growth and grain yield of rice (Oryza sativa L.)

https://doi.org/10.20956/ijab.v3i1.6688
Saroj Thapa
Agriculture and Forestry University, Rampur, Chitwan, Nepal
Khagendra Thapa
Agriculture and Forestry University, Rampur, Chitwan, Nepal
Jiban Shrestha
Nepal Agricultural Research Council, Agriculture Botany Division, Khumaltar, Lalitpur, Nepal
Amit Chaudhary
Agriculture and Forestry University, Rampur, Chitwan, Nepal

Corresponding Author(s) : Saroj Thapa

thapasaroj1998@gmail.com

International Journal of Applied Biology, Vol. 3 No. 1 (2019): International Journal of Applied Biology

Abstract

Rice (Oryza sativa L.) is first staple crop of Nepal. The national average yield of rice is less than its potential yield, for which poor agronomic management has been reported as the critical factor. Among various agro-management practices seedling age, seeding density and nitrogen rates significantly affect the growth and yield of rice. The lower seeding density produces the taller plant, more effective tiller, lower sterility and higher grain yield. On the other hand, seedling of older age from higher seeding density gives the lowest yield. Transplanting younger seedling with low seeding density and application of recommended dose of nitrogen gives a higher yield. This article summarizes various effects of seedling age, seeding density and nitrogen rates on plant height, number of effective tillers, number of filled grains, thousand grain weight and grain yield of rice. This information may be useful for maize growers and researchers.
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