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Aerial Photography: Use in Detecting Simulated Insect Defoliation in CornArtificial defoliation in corn was used to explore the usefulness of aerial photography in detecting crop insect infestations. Defoliation on the top of plants was easily detected, while that on the base was less so. Aero infrared film with Wratten 89B filter gave the best results, and morning flights at the scale of 1:15840 are recommended. Row direction, plant growth stage, and time elapse since defoliation were not important factors.
Document ID
19730023536
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chiang, H. C.
(Minnesota Univ. Minneapolis, MN, United States)
Latham, R.
(Minnesota Univ. Minneapolis, MN, United States)
Meyer, M. P.
(Minnesota Univ. Minneapolis, MN, United States)
Date Acquired
August 7, 2013
Publication Date
June 30, 1973
Publication Information
Publication: A study of Minn. Forests and Lakes using Data from ERTS
Subject Category
Geophysics
Report/Patent Number
PAPER-8076
Accession Number
73N32268
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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