Which of the following farming practices are cultural methods used to control pests and diseases? I. Crop rotation II. Mixed farming III. Monoculture

Crop rotation is a farming practice that involves planting different crops in a particular field over a period of time, while mixed farming involves cultivating different types of crops and rearing animals on the same piece of land. Both of these practices are examples of cultural methods used to control pests and diseases, as they help to disrupt the life cycle of pests and prevent the build-up of diseases in the soil. On the other hand, monoculture involves planting a single crop in a field, which can lead to the build-up of pests and diseases, and therefore is not a cultural method used to control pests and diseases. Therefore, the correct answer is (A) I and II only.