A SIMPLIFIED METHOD FOR ESTIMATING THE LE AF-AREA GROWTH OF FIELD-GROWN MAIZE FROM A REDUCED NUMBER OF MEASUREMENTS

A simplified method for leaf area estimation in corn is described. It is shown that during the first half of leaf growth period, growing lea ves form the major part of total leaf area. The method uses the number of growing leaves as well as the number and size of full grown leaves . Estimated leaf area and intercepted light are compared with actual l eaf measurements (table I) and derived intercepted light estimations ( tables I and II). The method produces adequate estimations at flowerin g but overestimates intercepted light during the first half of leaf gr owth.