Estimation of the Area of Rubber Leaves (<i>Hevea brasiliensis</i> Muell. arg.) Using Two Leaflet Parameters

Abstract

SUMMARY A rapid, simple method is described for estimating the area of rubber leaves from two measurements on the middle and one of the side leaflets. The relationship between the area of a leaflet (A) and its length × breadth (LB), described by the expression A = 0.654 LB, does not vary between the three leaflets or between leaves of different ages, and clonal differences are slight.