DEBRA FERGUSON / AGSTOCKUSA / SCIENCE PHOTO LIBRARY DEBRA FERGUSON / AGSTOCKUSA / SCIENCE PHOTO LIBRARY
Crop spraying. Light aircraft spraying insecti- cide onto a field of cotton, Gossypium sp.. Aerial spraying is a useful way of applying chemicals where vehicles cannot travel without damaging the crops. Insecticides are essential in intensive agriculture because a pest that establishes itself in a large field will spread rapidly. Major insect pests of cotton include: bollworms which are moth caterpillars; the boll weevil, Anthonomus grandis; jassids which suck juices from the plants; and cotton stainers, Dysdercus sp., which feed on the seeds. Photographed in Mississippi, USA.
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