Journal article

Publication year: 1984

Pages: 585-587

Journal: Phytopathology

Volume number: 74

Issue number: 5

ISSN: 0031-949X

eISSN: 1943-7684

DOI Link: https://doi.org/10.1094/Phyto-74-585

Publisher: American Phytopathological Society

Abstract: 
In 1978, serious epidemics of yellow rust [Puccinia striiformis] and leaf rust [P. recondita] occurred in the major wheat [Triticum aestivum, T. durum] growing plains of Pakistan while similar areas in adjacent India were free from these diseases. Analysis of Landsat-2 multispectral scanner negatives for April 1977 and 1978 channels 6 (wavelength range 0.7-0.8 .mu.m) and 7 (wavelength range 0.8-1.1 .mu.m), that covered both the disease-affected and unaffected areas, revealed that crop plant stress caused by disease can be monitored. Data recorded by channels 6 and 7 during the disease-free years of 1977 and 1978 in India had overlapping values, indicating a similar status of health; while the 1978 wheat crop in Pakistan was seriously diseased and reflected more of the IR (wavelength range 0.7-0.8 .mu.m). This difference was due to disease, because soil, crop and weather conditions were almost identical on both sides of the border. Although channel 7 data showed similar differences, these were not conspicuous. These studies established the possible use of Landsat-2 in assessing crop health.

Harvard Citation style: NAGARAJAN, S., SEIBOLD, G., KRANZ, J., SAARI, E. and JOSHI, L. (1984) MONITORING WHEAT-RUST EPIDEMICS WITH THE LANDSAT-2 SATELLITE, Phytopathology, 74(5), pp. 585-587. https://doi.org/10.1094/Phyto-74-585

APA Citation style: NAGARAJAN, S., SEIBOLD, G., KRANZ, J., SAARI, E., & JOSHI, L. (1984). MONITORING WHEAT-RUST EPIDEMICS WITH THE LANDSAT-2 SATELLITE. Phytopathology. 74(5), 585-587. https://doi.org/10.1094/Phyto-74-585