GCE Agricultural Science 2025 Objective — Question 26

Question 26 of 50 from the General Certificate of Education (GCE) Agricultural Science 2025 Objective paper, with the correct answer and a full explanation.

The budding of sweet orange scion on sour orange stock is to prevent

A. gummosisCorrect
B. canker
C. citrus scab
D. powdery mildew

Explanation

Sour orange rootstock is used because of its resistance to gummosis, a disease that affects citrus trees, particularly at the base of the trunk.

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