Read online Cooperative Economic Insect Report, 1955: Survey Methods (Classic Reprint) - U.S. Department of Agriculture | PDF Online

Read Cooperative Economic Insect Report, 1955: Survey Methods (Classic Reprint) - U.S. Department of Agriculture | PDF

Excerpt from Cooperative Economic Insect Report, 1955: Survey MethodsA rating is assigned to each county based on stop ratings and percentage of land under cultivation in the county. The greater the percentage of cultivated land the less protective cover available for hibernation and, consequently, a reduced population in comparison to crops that may be attacked.

Title : Cooperative Economic Insect Report, 1955: Survey Methods (Classic Reprint)
Author : U.S. Department of Agriculture
Language : en
Rating :
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Type : PDF, ePub, Kindle
Uploaded : Apr 03, 2021

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