The potential of optical canopy measurement for targeted control of field crop diseases

There is increasing pressure to reduce the use of pesticides in modern crop production to decrease the environmental impact of current practice and to lower production costs. It is therefore imperative that sprays are only applied when and where needed. Since diseases in fields are frequently patchy...

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Published inAnnual review of phytopathology Vol. 41; pp. 593 - 614
Main Authors WEST, Jonathan S, BRAVO, Cedric, OBERTI, Roberto, LEMAIRE, Dimitri, MOSHOU, Dimitrios, MCCARTNEY, H. Alastair
Format Journal Article
LanguageEnglish
Published Palo Alto, CA Annual Reviews 2003
Annual Reviews, Inc
Subjects
Biological and medical sciences
Crops, Agricultural
Fundamental and applied biological sciences. Psychology
Methods and techniques. Experimental designs. Plant protection equipments
Phytopathology. Animal pests. Plant and forest protection
Plant Diseases
Agricultural chemical product
Plant pathology
Targeting
Plant pathogen
Review
spray maps
Epidemiology
Remote sensing
Precision agriculture
Engineering
Pest
Chemical control
Advanced technology
Cultivated plant
Field crop
disease detection
precision pest management
Pest and disease control
Pesticides
Plant leaf
Biophysics
Infection
Optical measurement
Detection
Canopy(vegetation)
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Summary:There is increasing pressure to reduce the use of pesticides in modern crop production to decrease the environmental impact of current practice and to lower production costs. It is therefore imperative that sprays are only applied when and where needed. Since diseases in fields are frequently patchy, sprays may be applied unnecessarily to disease-free areas. Disease control could be more efficient if disease patches within fields could be identified and spray applied only to the infected areas. Recent developments in optical sensor technology have the potential to enable direct detection of foliar disease under field conditions. This review assesses recent developments in the use of optical methods for detecting foliar disease, evaluates the likely benefits of spatially selective disease control in field crops, and discusses practicalities and limitations of using optical disease detection systems for crop protection in precision pest management.
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ISSN:0066-4286
1545-2107
DOI:10.1146/annurev.phyto.41.121702.103726