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WAEC Agricultural Science 2002 Question 11

Question 11

Soil Fertility and Plant Nutrition

Which of the following describes the effects of excessive nitrogen application on the growth of maize plants?

  1. A.High vegetative growth with low yield
  2. B.High vegetative growth with high yield
  3. C.Low vegetative growth with high yield
  4. D.Low vegetative growth with low yield
Show the answer and explanation

Answer: A (High vegetative growth with low yield)

Explanation

Too much nitrogen gives lush leaves and stems but delays and reduces grain yield (and causes lodging).