VAUDATION OF FAO MODEL FOR CROP MONITORING AND YIELD FORECASTING FOR KHARIF CROP ( PEARL MILLET )
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Date
1991
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mpkv, rahuri
Abstract
The study on validation of FAO model for crop
monitoring and yield forecasting can be a very useful tool to
identify crop potential of dry farming tract. Hence, the study
was undertaken in Solapur district for experimental research
station Solapur, south Solapur and Akalkot regions. An attempt
was made to find out moisture availability index as a tool to
monitor crop growth. The regression equation between moisture
availability index and yield was then developed which was used
for forecasting the yield of pearl millet.
The findings of the study revealed that the total water
requirement of the crop for experimental fields ranged between
185 and 289 mm while for farmer's field it ranged between 209 and
- x v i i -
306 mm. Crop growth was monitored on the basis of the moisture
availability index, which showed a direct relationship with
yield. Regression equations were developed to forecast yield of
pearl millet, using moisture availability index as independent
variable and yield as dependent variable. It showed that in the
case of experimental research station, Solapur the equation was
in the form of a reciprocal hyperbola with a multiple correlation
coefficient of 0.7671 which accounted for 58.84% of total
variations. In the case of south Solapur region, the regression
equation was in the form of a parabola with a multiple
correlation coefficient of 0.8201 which accounted for 67.21% of
total variations and in the case of Akalkot region, the
regression equation was in the form of a reciprocal hyperbola
again which accounted for 86.29% of total variations. A simple
correlation coefficient between moisture availability index and
yield for experimental research station, Solapur south Solapur
and Akalkot regions was found to be +0.625, 0.77 and +0.611
respectively, and the same was found to be significant at 5%
level for all the regions except Akalkot region.
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