Biologische Schadlingsbekampfung by J. M. Franz and A. Krieg.  1972.  Paul Parey Verlag, Gerlin, 208 p. 16 fig.

 

This book will prove informative to all persons interested in the control of pest organisms, particularly pest arthropods.  It illustrates principles and givs timely examples.  This pocket-sized popularly priced book discusses in simple terms the potentials and limitations of biological pest control.

 

it is refreshing to read a synthesis of contemporary thoughts on the subject of biological control written by leading experts and condensed into a book of this size.  A forceful step away from redundancy and sensationalism of the subject has been taken, which reflects an authentic comprehension of biological control and emphasizes truly significant contributions.  In this sense, it is interesting to note that the cited literature is greatly reduced over that contained in certain contemporary works on the subject, which appear to serve more as advertising media in disguise for a selected group of investigators as originators of long-established concepts.

 

Regional emphasis is placed on the use of biological control in Europe, Germany especially.  A similar treatment for other regions of the world would undoubtedly further the adoption of more sound ecological approaches to pest control in those areas.

 

The authors propose several positive steps for advancement of biological control, including the use of natural enemies resistant to pesticides, spatial concentration of natural enemies through cultural and physiochemical means, mass releases of entomophagous arthropods, discovery and importation of new species of natural enemies to combat both native and imported pests, technological developments to produce more potent virus preparations for use against certain difficult species, further research into the use of natural enemies in greenhouses, especially where resistance and toxic residue problems exist, and trials with repellants and attractants to concentrate pest species around pesticide-treated areas while repelling beneficial species.   Chapter headlines are natural balance or pest control; physical, chemical and cultural control; specific qualities of biological methods, characteristics of beneficial organisms and how they are applied, the use of vertebrates (fish, amphibians, birds, mammals), the use of arthropods, nematodes and snails, the use of pathogens (microbial pest control, microbial control of vertebrates, insects and microbes).  Biological weed control:  native and imported weeds, and specifically European problems.  Also the use of autocidal control.

 

Regarding Introductions:  the principal natural incompatibility such as sterilization by radiation, chemosterilization, translocation and other genetic mechanisms, practical steps such as biotechnical methods, physical stimuli such as those with chemicals, and integrated control.  Past and future trends are considered.

 

The authors point out that many more biological solutions to pest problems exist than are currently being employed, and they go on the describe the possibilities in considerable detail.  They express optimism toward solving many pressing prolems by integration of biological and other control methods in a total effort.  The success of newly developed techniques such as inundation with pathogens, entomophagous arthropods, and sterils mails refutes the notion that beneficial organisms cannot cope with contemporary pest problems.  Biotechnology is defined, and such examples as the use of light, phagostimulants and deterrents, pheromones and hormones are discussed.  Present concepts of an economic injury level are questioned and the application of biological control in home gardens is clarified.

 

E. F. LEGNER

Division of Biological Control

Department of Entomology

University of California

Riverside, CA 92502