Crop rotation in Punjab helps in:

Maintaining soil fertility
Pest and disease control
Breaking weed cycles
All of the above

The correct answer is: All of the above.

Crop rotation is a farming practice in which different types of crops are planted in the same area in a planned sequence. This helps to maintain soil fertility, control pests and diseases, and break weed cycles.

Soil fertility is the ability of soil to provide the nutrients that plants need to grow. When different types of crops are planted in the same area, they take up different nutrients from the soil. This helps to prevent the soil from becoming depleted of nutrients.

Pests and diseases can damage crops and reduce yields. Crop rotation can help to control pests and diseases by disrupting their life cycles. When different types of crops are planted in the same area, pests and diseases that attack one type of crop may not be able to attack other types of crops.

Weeds can compete with crops for water, nutrients, and sunlight. Crop rotation can help to break weed cycles by planting different types of crops in the same area. This makes it more difficult for weeds to establish themselves and compete with crops.

In conclusion, crop rotation is a beneficial farming practice that helps to maintain soil fertility, control pests and diseases, and break weed cycles.