نتایج جستجو برای: infestations

تعداد نتایج: 2929  

Journal: :Journal of animal science 1992
R L Byford M E Craig B L Crosby

Losses in livestock production due to ectoparasite infestations exceed $2.26 billion annually. Over 50 species of ectoparasites infest cattle throughout the United States. The horn fly, Haematobia irritans (L.), is the most important and widespread of the five to six major pest species of pastured cattle in the southern region. Results from the examination of production traits from cattle under...

2014
Hema Bisht Deepa Bhagat M. K. Bhatnagar

Fearly economic losses occur in the agricultural industry worldwide due to insects and pests. The monitoring of health and detection of various infections in plants is therefore critical for sustainable agriculture. Detecting early information on crop health and pest infestations can facilitate the control of these all too often devastating infections through proper management strategies such a...

2007
R. P. Haff T. C. Pearson

An automatic recognition algorithm was developed and tested for detection of certain defects or contaminants in X-ray images of agricultural commodities. Testing of the algorithm on wheat kernels infested with larvae of the granary weevil, Sitophilus granarius (L.) yielded comparable results to those obtained by human subjects evaluating digitized X-ray film images (14.4% overall error vs. 15.6...

2017
John B. Bourne JOHN B. BOURNE

Since 1950, Alberta Agriculture has supervised and coordinated a rural-based Norway rat (Rattus norvegicus) control program that has essentially kept the province rat-free. Success is achieved by eliminating invading rats within a control zone 600 km long and 30 km wide along the eastern border of the province. A systematic detection and eradication system is used throughout the zone to keep ra...

Journal: :Remote Sensing of Environment 2023

Detecting disease- or insect-infested forests as early possible is a classic application of remote sensing. Under conditions climate change and global warming, outbreaks the European spruce bark beetle (Ips typographus, L.) are threatening related timber industry across Europe, detection infestations important for damage control. Infested trees without visible discoloration (green attack) have ...

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