Vol 20 No 1-2 (2014)
Cikkek

Drought stress monitoring by laboratory and satellite spectral methods in an apple orchard

Published April 22, 2014
A. Nagy
University of Debrecen, Institute of Water and Environmental Management, Debrecen, 4032 Böszörményi str. 138.
P. Riczu
University of Debrecen, Institute of Water and Environmental Management, Debrecen, 4032 Böszörményi str. 138.
J. Tamás
University of Debrecen, Institute of Water and Environmental Management, Debrecen, 4032 Böszörményi str. 138.
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How to Cite

APA

Nagy, A., Riczu, P., & Tamás, J. (2014). Drought stress monitoring by laboratory and satellite spectral methods in an apple orchard. International Journal of Horticultural Science, 20(1-2), 7-9. https://doi.org/10.31421/IJHS/20/1-2/1109

Abstract

An orchard can be examined on the basis of spectral data, using such methods with which the reflected radiation can be divided into a large number of (several hundreds) small spectral channel (some nm). Based on the spectral characteristics of the canopy, or the different index numbers calculated from hyperspectral data the water supply conditions of foliage can be well characterized. The research site is an intensive apple orchard, which located in Debrecen University, Centre for Agricultural and Applied Economic Sciences, Farm and Regional Research Institute at Pallag. During our experiments the evaluation of spectral, non-invasive measurement method are carried out for detecting stress symptoms caused by drought. Furthermore, MODIS NDVI time series data were analyzed for orchards situated in North-Eastern part of Hungary in drought effected and wet years in order to detect differences. Significant differences in NDVI values were detected after the end of June.

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