uma partap tej (2 risultati)

Soft cover. Condizione: Fine.

figs (illustratore). Contents Preface Acknowledgements Summary 1 Introduction to pollination 2 Bees as crop pollinators 3 Beehives and beekeeping 4 Hive bees as crop pollinators 5 Managing crop pollination 6 Crop pollination using honeybees and other bee species 7 Protecting honeybees from pesticide poisoning Annexures i Non-chemical methods of pest management ii Relative toxicity of some pesticides to honeybees Further readingThis manual about managing crop pollination using honeybees is written in easy to follow language and is full of explanatory diagrams It is written to serve as a guide to field extensionists and farmers to promote wider use of honeybees for crop pollination The manual consists of seven chapters supporters by illustrations Through these chapters the manual explains how honeybees can be used effectively for cross-pollination to enhance productivity and yield of crops It also describes the reasons how different kinds of bees are important crop pollinators; how bees pollinate crop; techniques for managing a honeybee colony its reproductionmultiplication swarming and absconding and species of honeybees in IndiaThe manual also describes types of beehives including traditional fixed-comb hives and modern movable-frame hives; role of hive bees in crop pollination and why hive bees are better crop pollinators than wild bees It describes ways to manage hive bees for pollination of crops By providing examples of managed crop pollination using hive bees and wild bee species economic value of bee pollination; the manual suggests ways that crop growers and beekeepers can protect bees from their harmful effects 116 pp.