Library of Congress Catalog Card Number: 81-600045
This publication reports research involving pesticides. It does not contain recommendations for
their use, nor does it imply that the uses discussed here have been registered. All uses of pesticides
must be registered by appropriate State and/or Federal agencies before they can be recommended.
CAUTION: Pesticides can be injurious to humans, domestic animals, desirable plants, and fish or
other wildlife-if they are not handled or applied properly. Use all pesticides selectively and care-
fully. Follow recommended practices for the disposal of surplus pesticides and pesticide containers.
U.S. DEPARTMENT OF AGRICULTURE
The use of trade, firm, or corporation names in this publication is for the information and
convenience of the reader. Such use does not constitute endorsement or approval by the U.S.
Department of Agriculture of any product or service to the exclusion of others which may be
suitable.