Q. Pests white stem borer, shot hole borer, mealybugs are known to attack which of the following crops? Answer:
Coffee
Notes:
White Stem Borer(Xylotrechus quadripes) is a serious pest of arabica coffee. Infested plants show external ridges around the stem. Affected plants also show yellowing and wilting of leaves.
Shot hole Borer(Xylosandrus compactus) withered or dried branches with shot holes indicate presence of the pest. Attacked branches dry up fast. Terminal leaves beyond the point of attack fall off prematurely.
Mealybugs(Planococcus citri & P. lilacinus) attack nodes, spikes, berries, tender branches, leaves and roots leading to debilitation of the plant and crop loss. Ant activity noticeable on the plants affected by mealy bugs.