WAEC Agricultural Science 2022 Objective — Question 17

Question 17 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2022 Objective paper, with the correct answer and a full explanation.

Potassium deficiency in cereal crops is indicated by

A. browning of leaves from the tips and marginsCorrect
B. yellowing of younger leaves
C. purpling of leaves
D. white and irregular spots on leaves

Explanation

Potassium deficiency in cereal grains typically appears as a scorching/browning of the older, lower leaves, beginning at the leaf tip and moving down the margins.

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