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The study area is located between 23.5o
and 30.5o N and 76.5 o
to 84.5 o
E bordered by the
Indo gangetic plains. It covers about 24093 km2
geographical area.Total 400 ground truth data was collected
using the handheld GPS during the crop season in
all the district of the study area. The satellite data
of the same period consisted of 56 m spatial
resolutions were used for the analysisUttar Pradesh contributes largest acreage of sugarcane (more than 40 per cent) to the
national crop acreage; hence an early estimate of the crop acreage becomes paramount
importance which was done using AWiFS data. Multi-date data of Resourcesat-2 AWiFS from
February to November 2012 and January to November, 2013 for the 27 districts of Uttar
Pradesh (U.P) was used to develop the procedure for early estimation of sugarcane acreage.
The districts selected were having an area greater than 10 thousand ha and contribute 98.7 per
cent of the state sugarcane acreage. The ground truth was collected during July/August and
October 2012-13.The classification accuracy vis-a-vis critical data set requirement and
identification of ratoon and freshly planted crop was also attempted. Early estimation of
sugarcane acreage during month of June can be made possible by using multi-date AWiFS
data upto May in case of Uttar Pradesh. The estimated acreage was 18.1 lakh ha which were
30 per cent underestimated in comparison to crop acreage estimation using data upto Nov. 3,
2012 which was 26.1 lakh ha. The error in early estimation of the crops was reduced by about
50 per cent as the estimated crop acreage during May was19.5 lakh ha whereas using AWiFS
data upto Nov. 3, 2013 was 22.6 lakh ha. Therefore, on the basis of model output for two
years, early estimation in June showed under estimation of 22 percent compared to final
estimate in NovemberNot Availabl