ibclogo XVI International Botanical Congess


Abstract Number: 3989
Poster No. = 2477


STUDIES ON SOME CITRUS DISEASES BY REMOTE SENSING TECHNIQUE


M. A. Awad(*), M. Nazim(*), S. I. Abdel Rahman(*) National Authority for Remote Sensing and Space Science (NARSS), Egypt


Remote sensing is a means of detecting and assessing changes in plants. To evaluate influencing factors, it can be compare remote sensing data from healthy plants with data from plants under stress. The early detection has an important role in selecting the healthy and proper mothers for bud grafting in citrus as well as to avoid the widespread of a disease by following a suitable method for early disease control. The use of radiometer, spectrophotometer, spectral signature as well as infrared thermometer were very efficient under the Egyptian conditions. The colotron software can be successfully used with a large group of plant diseases specially virus diseases where the foliage clearly affected. Landsat Thermatic Mapper (TM) data was used to differentiate between the citrus orchards and the other cultivars in the study area. Unsupervised classification for the satellite image showed the spectral reflectance for the different landuse units.


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