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SS2 Agriculture Science

Pests of Crops

Overview

i. state the meaning of pests. ii. Classify pests into insects and non-insects pests. iii. classify insects pests based on their mode of mouth parts. iv. discuss the important insects pests of major crops. v. recognize and name the important storage insects pests of farm produce vi. describe the nature of damage of crops. vii. describe the biology of some of the selected crops. viii.state and discuss the general control and preventive measures. ix.State and discuss the possible side effects of the various preventive and control methods on man and the environment. x.State general effects/economic importance of pests.

What you'll learn
  • Meaning of pests.
  • Classification of pests.
  • a) insect pests.
  • b) non-insects pests.
  • Classification of insect pests based on mouth parts with examples.
  • a) biting and chewing
  • b)piercing an sucking
  • c)boring.
  • Name and description of important insect pests of crops.
  • i) cereals, stem borer etc.
  • ii. legume-pod borer, aphids , etc.
  • iii. beverages-cocoa my rids (capsids), etc.
  • Tuber-Yam beetle, cassava mealy bug, variegated grasshopper, etc.
  • Fiber-cotton strainers, boil worms etc.
  • Fruits and vegetables-grasshopper, leaf roller, leaf beetle, scale insects.
  • vii)Stored produce pests
  • -grain weevils, bean beetle.
  • Other important pests (Non-insect pests) e.g. birds, rodents, etc.
  • Nature of damage to crops and economics importance of each selected pests.
  • Broad outline of the biology of selected insect pests.
  • Preventive and control measures.
  • Cultural, Biological, Chemical methods. Quarantine method.
  • Side effects of the various preventive and control methods:
  • Chemical-pollution, poisoning.
  • Biological-Misbalancing of ecosystem.
  • Cultural method-Harmful effect of burning.
  • Effects/economic importance of pests.