• Crops need three things for good growth: water, nutrients from the soil, and protection from predators such as insects.
  • Water purification uses a number of chemical and physical techniques to remove salts and contaminants that would pollute the soil.
  • Nitrogen is extremely important for good crops.
  • Infestations of armyworms can do major damage to corn and grain crops.
  • Aphids and boll weevils are major predators of cotton crops.
  • Failure to control these pests will result in widespread crop damage and financial loss to the farmer.
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