Article Id: ARCC5200 | Page : 234-237
Citation :- LEAF AREA ESTIMATION OF FLEMINGIA SEMIALATA ROXB. BY UNEAR REGRESSION.Agricultural Science Digest.2000.(20):234-237
S.K. Yadav, Y.D. Mishra, B.P. Singh and P. Kumar'
Address : Division of Lac Production Indian Lac Research Institute, Ranchi-834 OlD. India


With a view to device simple and convenient method for nondestructive estimation of
leaf area with high accuracy, correlation and regression analysis was conducted by taking
actual leaf area by graphical method as dependent and' 10 easily accessible leaf parameters as
independent variable and also by calculating correction factors. The result indicated that all
the 10 independent variables have highly significant positive correlation, contributing significantly
to the variation recorded in the dependent variable. considering coefficient of determination
obtained in each case it can also be said that the petiole length (Xl) Cilone may
explain, towards the lower side, 61.38% while the total calculated leaf area (sum L x B of
three leaflets), to the higher side, may explC'in 99.4% of variation in the adual leaf area.
Comparative efficiency of correction factor and four most efficient RE derived for easily
accessible parameters, clearly indicated the least deviation from the actual area and estimated
area in case of RE for calculated leaf aera where as the highest in case of RE for the third
leaflet. length. Thus, two separate RE for estimation of leaf area for a single leaf and for
Ii!rger leaves sample have been proposed and discussed.



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