Pre-harvest wheat yield and production estimation for the Punjab, India

Dubey, R. P. ; Ajwani, N. ; Kalubarme, M. H. ; Sridhar, V. N. ; Navalgund, R. R. ; Sidhu, S. S. ; Jhorar, O. P. ; Cheema, S. S. ; Narang, R. S. (1994) Pre-harvest wheat yield and production estimation for the Punjab, India International Journal of Remote Sensing, 15 (10). pp. 2137-2144. ISSN 0143-1161

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Two different approaches to relate wheat yield with spectral indices derived from remotely-sensed data have been explored for the state of Punjab, India. In the study based on site-level approach yield obtained from crop-cutting sites was found to be linearly related to NIR/Red ratio derived from Landsat MSS data of corresponding sites in Ludhiana and Patiala districts of Punjab. Incorporation of agrometeorological data was also tried. Certain inherent limitations of the site-level approach led to the district-level studies which focused on the relation of district yields with corresponding average spectral indices derived from satellite sensors like Landsat MSS and lRS-LISS-i. Significant correlations were observed in all cases and the relation based on Landsat MSS/IRS LISS-I data was used for trial forecast of wheat yields for 1989-90 season. A comparison of remote-sensing based production forecast showed good agreement with the conventional estimate of Bureau of Economics and Statistics at state level although at district level, deviations were larger.

Item Type:Article
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