POISON Part 2
Description
Shows how poison is used to combat agricultural pests and how insecticides are tested for safety and strength. Cotton fields are dusted with calcium arsenate, cattle and sheep are dipped, and orchards are sprayed. Preparations advertised to kill cockroaches, bedbugs, and fruit tree pests are tested in a laboratory and in orchards.
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Records of the Extension Service
Series
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Date
1922-01-01
File
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TRT
3:35