IPM and Biological Control of Weeds
Author : Jayne T. MacLean
Publisher :
Page : 44 pages
File Size : 15,47 MB
Release : 1991
Category : Weeds
ISBN :
Author : Jayne T. MacLean
Publisher :
Page : 44 pages
File Size : 15,47 MB
Release : 1991
Category : Weeds
ISBN :
Author :
Publisher :
Page : 48 pages
File Size : 34,10 MB
Release : 1990
Category : Weeds
ISBN :
Author :
Publisher :
Page : 172 pages
File Size : 38,68 MB
Release : 1996
Category : AGRICOLA (Information retrieval system)
ISBN :
Author : Jane Potter Gates
Publisher :
Page : 88 pages
File Size : 41,10 MB
Release : 1994
Category : Horticultural crops
ISBN :
Author : Great Britain. Patent Office
Publisher :
Page : 550 pages
File Size : 36,72 MB
Release : 1893
Category : Patents
ISBN :
Author : Charles N. Bebee
Publisher :
Page : 666 pages
File Size : 18,37 MB
Release : 1991
Category : Nuts
ISBN :
Author : Charles N. Bebee
Publisher :
Page : 150 pages
File Size : 32,14 MB
Release : 1991
Category : Peanuts
ISBN :
Author : John Frederic Moehl
Publisher : Food & Agriculture Org.
Page : 56 pages
File Size : 20,68 MB
Release : 1993
Category : Technology & Engineering
ISBN : 9789251033838
Management strategies for fish populations in small impoundments are reviewed with consideration given to intensification techniques applied throughout the United States and Canada. The concept of balance in fish populations is used as a basis for illustrating the importance of maintaining desirable predator/prey relationships through stocking and harvest regulation of keystone predators. Generally, harvest levels for predators are reduced when species diversity and structural complexity of the environment are increased. Intensification is also achieved by enhancing water fertility through liming and fertilization. Case studies are presented representing contrasting climatic regions of North America while demonstrating similarities in management style. Principles and practices presented in this paper should be adaptable to the management of fisheries in small water bodies over a wider geographical range than discussed.
Author :
Publisher :
Page : 1052 pages
File Size : 13,64 MB
Release : 1889
Category :
ISBN :
Author :
Publisher :
Page : 1104 pages
File Size : 38,10 MB
Release : 1990
Category : Agriculture
ISBN :