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Author : Albert Ronald Merz
Publisher :
Page : 786 pages
File Size : 32,9 MB
Release : 1939
Category : Agricultural experiment stations
ISBN :
Author : Paul A. Berry
Publisher :
Page : 12 pages
File Size : 13,39 MB
Release : 1938
Category : Elm
ISBN :
Author : P. A. Berry
Publisher :
Page : 12 pages
File Size : 11,59 MB
Release : 1937
Category :
ISBN :
Author : Abdelfattah Aly Moursi
Publisher :
Page : 56 pages
File Size : 48,74 MB
Release : 1939
Category :
ISBN :
Author : George Washington Craddock
Publisher :
Page : 12 pages
File Size : 21,77 MB
Release : 1938
Category : Elm
ISBN :
Author : Michael Robert Hamerski
Publisher :
Page : 292 pages
File Size : 10,35 MB
Release : 1988
Category :
ISBN :
Author : Sheng-Ling Ho
Publisher :
Page : 198 pages
File Size : 17,37 MB
Release : 1991
Category :
ISBN :
Author :
Publisher :
Page : 622 pages
File Size : 27,18 MB
Release : 1985
Category : Agriculture
ISBN :
Author : United States. Superintendent of Documents
Publisher :
Page : 3208 pages
File Size : 36,53 MB
Release :
Category : Government publications
ISBN :
Author : T. W. Fisher
Publisher : Elsevier
Page : 1073 pages
File Size : 27,37 MB
Release : 1999-09-20
Category : Science
ISBN : 0080533019
For many years the use of chemical agents such as pesticides and herbicides has been effective in controlling the many varieties of pests that infest both agricultural crops and backyard gardens. However, these pests are gradually becoming resistant to these agents, because the agents themselves are acting as selective factors making the pests better and better able to resist and persist. As a result, the use of biological controlling agents is increasing. This book is a comprehensive and authoritative handbook of biological control.