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Lesson Note On The Description of the Damage Done by Pests and Effects of Crop Pests on Yield

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Effects of crop pests on yield.

  1. Heavy attack by pests may result in total crop failure.
  2. Infected seeds, crops, and vegetables have low market value.
  3. Pests reduce the quality of crops
  4. Pests eat up leaves of crops, thereby reducing the photosynthetic activity of the plant.
  5. They cause injury which may predispose crop to diseases attack.
  6. Infected seeds usually have low viability (germination) capacity.
  7. Some insects like aphids transmit diseases to crops.
  8. Pests reduce the quantity of crops.

Economic importance of pests

  1. Reduction of quality of products
  2. Control of pests leads to an increase in production.
  3. Reduction in the profit of farmers.
  4. Pests e.g monkeys and birds cause nuisance to farmers by their noisy habits.
  5. Pests can also cause diseases to crop farmers.
  6. All the points under the effects of crop pests on yield above.

EVALUATION

State five effects of pests on crop yield

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