Development of Thematic Mapper Vegetative Indices for Assessing Biomass in Corn, Soybeans and Wheat

摘要

Spectral transformations that utilize thematic mapper (TM) bands were found to be highly related to various agronomic parameters such as leaf area index, percent ground cover, total fresh biomass, and plant moisture for corn, soybeans, and wheat. It was found that different spectral transformations are necessary in order to obtain the maximum predictability for each agronomic variable. The TM bands in the water absorption region (1.55 micrometers to 1.75 micrometer and 2.08 micrometer 2.35 micrometer) appear to provide information concerning the water condition of the canopy.