Concept:Cultural pest control uses farm practices, such as adjusting planting time, to reduce pest attack.
Explanation:The pest shown in the diagram is a field insect pest.
Early planting is a cultural method of pest control.
It helps the crop to grow beyond its most vulnerable stage before the pest population increases.
Spraying with insecticides and fumigation of the store are chemical or physical control methods, not cultural methods.
Hand-pulling of weeds controls weeds, not the insect pest shown.
Therefore, the cultural method used to control the pest is early planting.
Answer:D. early planting
