ISHS Acta Horticulturae 171: I International Symposium on Water Relations in Fruit Crops
EVALUATION OF CROP GROWTH BY ECOPHYSIOLOGICAL PARAMETERS |
| Authors: | L. Bacci, C. Vazzana, G. Maracchi, A. Raschi |
| Abstract:
Growth analysis is widely used in agronomic research to link physiological processes, such as photosynthesis, and their external output, such as form and dimension of plants and canopy structure. Functions describing dry matter accumulation, LAI and crop height development during crop growth were determined - the first growth stage showed an exponential trend, while the second was mostly linear - RGR and NAR were determined as functions of light distribution, while stomatal resistance was related to soil water content. On the other hand, direct investigation about light estimation is useful to describe the differential stomatal resistance behaviour in part of the leaves. Dry matter production is predicted on the basis of the relationship between calculated NAR and net assimilation from the Gaastra equation using stomatal resistance and its distribution along crop height. | |
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