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Abstract

A series of 45 plots of millet and sorghum were installed in Sotuba (Mali) during the 1985 rainy season. They comprised 5 varieties commonly found in the surrounding countryside. Radiometric measurements together with phenological observations and leaf measurements were made every 710 days. At harvest, the biomass was dried and each of its components was weighed. The data analysis shows that the graintostraw relationship can vary widely and is less sensitive to the species/variety than to the environmental conditions. The comparison of accumulated NDVI versus instantaneous NDVI has shown the superiority of the first one through its higher stability. Total biomass is directly correlated with accumulated NDVI since the tillering, while the final grain production is better correlated with accumulated NDVI after the booting. Furthermore, the terms of the regression seem to be time dependent.

Additional information

Authors: BARTHOLOME E JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: EARSEL "EUROPEAN REMOTE SENSING NEEDS IN THE 1990S", NOORDWIJKERHOUT (THE NETHERLANDS), MAY 4-8, 1987 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 33489 ORA
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