1M.Sc. (Agric.) Student, Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences
2Professor, Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences
3Director, Carbon Management Sequestration Centre, The Ohio State University, USA
4Director, Institute of Agricultural Sciences,
5Professor (Agronomy), The Ohio State University, USA
6Professor (Plant Physiology), The Ohio State University, USA
7Professor (Genetics and Plant Breeding), The Ohio State University, USA
8Junior Research Fellow, The Ohio State University, USA
9Research Scholar, The Ohio State University, USA
10Research Scholar, The Ohio State University, USA
Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh-221 005
*Corresponding author Email: sksingh_1965@rediffmail.com
Online published on 18 July, 2015.
A field experiment was conducted in randomized block design during the rainy (kharif) season of 2012 at Varanasi, Uttar Pradesh to study the effect of organic and inorganic sources of nutrients on soil quality and productivity of rice (Oryza sativa L.). The highest grain and straw yields (5.03 and 7.18 t/ha) were recorded under the treatments 100% recommended dose of fertilizer (RDF) + S-Zn-B and 75% RDF + 25% N through sewage sludge, respectively. Application of S (40 kg/ha), Zn (5 kg/ha) and B (1.5 kg/ha) along with NPK (120:60:60) in rice increased plant height, tiller number, grain yield and 1,000-grian weight 22, 99, 62 and 22%, respectively, over the control, but did not show any significant increase in these parameters over 100% RDF. Initial trends indicated that application of Sesbania perhaps increased N, P, B and Zn in soil while inorganic S, B and Zn fertilizers had residual effect in post-harvest soil.
Customized fertilizer, Rice, Sesbania, Sewage sludge, Vermicompost
