Zobrazeno 1 - 10 of 27 pro vyhledávání: '"M. R. Gebhardt"'
2
Algorithms for Extracting Leaf Boundary Information from Digital Images of Plant Foliage
Autor: E. Franz, M. R. Gebhardt, K. B. Unklesbay
Publikováno v: Transactions of the ASAE. 38:625-633
Algorithms were developed to extract edge segments along leaf margins in digitized scenes of weed seedlings. Edge segments were linked based on endpoint conditions to form closed boundaries of vegetative regions. Since boundaries represented regions
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0af8cd7d2a3718dbbca44e7ab095c1ef
https://doi.org/10.13031/2013.27875
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3
SHAPE DESCRIPTION OF COMPLETELY VISIBLE AND PARTIALLY OCCLUDED LEAVES FOR IDENTIFYING PLANTS IN DIGITAL IMAGES
Autor: M. R. Gebhardt, K. B. Unklesbay, E. Franz
Publikováno v: Transactions of the ASAE. 34:0673-0681
A common source of information used to identify plants is leaf shape. Methods were developed and implemented to identify in situ leaves of velvetleaf (Abutilon theophrasti), ivyleaf morning glory (Ipomoae hederacea), giant foxtail (Setaria faberi), a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39262f00cc7c570085bc36339694f055
https://doi.org/10.13031/2013.31716
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4
THE USE OF LOCAL SPECTRAL PROPERTIES OF LEAVES AS AN AID FOR IDENTIFYING WEED SEEDLINGS IN DIGITAL IMAGES
Autor: K. B. Unklesbay, M. R. Gebhardt, E. Franz
Publikováno v: Transactions of the ASAE. 34:0682-0687
An intelligent, plant identification scheme will require multiple types of information to be extracted from digitized scenes. Statistical measures were calculated for reflectance of in situ leaf surfaces in the near-infrared, red, and blue wavebands.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db91f4d433bc8fd6bcf532c792ef3931
https://doi.org/10.13031/2013.31717
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5
Seasonal Cycles of Soybean Arthropods in Missouri: Effect of Pesticidal and Cultural Practices 2
Autor: G. D. Thomas, M. R. Gebhardt, W. A. Dickerson, Norman Marston, D. L. Hostetter, Carlo M. Ignoffo
Publikováno v: Environmental Entomology. 8:165-173
Arthropods in 3 plantings of soybeans in central Missouri were sampled weekly in 1972 and 1974 to identify species and determine their seasonal cycles and abundance. Effects of interplanted alfalfa, biweekly applications of chemical insecticides (mal
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ed7035dbe499f76d9f7887add006ae80
https://doi.org/10.1093/ee/8.1.165
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8
Metering Concentrated Pesticides
Autor: M. R. Gebhardt, A. R. Kliethermes, C. E. Goering
Publikováno v: Transactions of the ASAE. 27:0018-0023
THE use of direct injection of concentrated pesticides into sprayer systems shows promise if the flowrate can be measured and controlled. The effect of temperature on density, viscosity, and flowmeter response is required in order to design component
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7767338bcc28f870e8ce8411c4516ef2
https://doi.org/10.13031/2013.32726
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9
Biology and Pest Potential of Anavitrinella pampinaria (Lepidoptera: Geometridae) in Soybeans1
Autor: C. Garcia, D. G. Davis, M. R. Gebhardt, Norman Marston
Publikováno v: Journal of Economic Entomology. 76:1248-1254
The geometrid Anavitrinella pampinaria (Guenee) became common in experimental plots of soybeans in mid-Missouri in 1978. Weekly sweep-net samples detected a peak population of 0.45 larvae per 10 sweeps in late August and early September. Larvae were
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::de6e0fdba19ee7eea57b5ed246117a0d
https://doi.org/10.1093/jee/76.6.1248
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