Publications

Tripathi, R; Nayak, AK; Raja, R; Shahid, M; Mohanty, S; Lal, B; Gautam, P; Panda, BB; Kumar, A; Sahoo, RN (2017). Site-Specific Nitrogen Management in Rice Using Remote Sensing and Geostatistics. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 48(10), 1154-1166.

Abstract
Proper doses of nitrogenous fertilizer are most important for rice production system because a large part of the nitrogen may be lost if it is not applied judiciously. A study was conducted covering five blocks of Balasore and two blocks of Bhadrak districts. Soil samples were collected randomly, and field visit was conducted during peak vegetative stage of rice. Two approaches have been used in this study for estimating the site-specific nitrogen (N) requirement in the study area. In one approach, geostatisical analysis and kriging was used to develop the soil test-based N recommendation map by which a minimum of 72kg N ha(-1) and maximum of 94kg N ha(-1) were recommended. In a second approach, remote sensing was used and N recommendation map was developed using the moderate-resolution imaging spectroradiometer (MODIS) leaf area index (LAI) and normalized difference vegetation index (NDVI) satellite data, and a minimum requirement of 60kg N ha(-1) and maximum of 120kg N ha(-1) was estimated through this approach.

DOI:
10.1080/00103624.2017.1341907

ISSN:
Oct-24