Which of the following improves overall yield according to crop diversification?

Crop diversification is a practice where farmers grow a variety of crops in the same area, which inherently offers several benefits that are crucial for improving overall yield. The option highlighting the enhancement of soil health and reduction of risks captures two fundamental aspects of crop diversification.

Firstly, diversifying crops can lead to improved soil health. Different crops have varying root structures and nutrient requirements, allowing for better use of soil nutrients and improved soil structure. For example, some plants can fix nitrogen in the soil, replenishing it for future crops, thereby creating a more sustainable growing environment.

Secondly, by growing a variety of crops, farmers can mitigate the risks associated with pests, diseases, and market fluctuations. If one crop fails due to a pest outbreak or unfavorable weather, other crops may still thrive, thus reducing the overall economic risk. This resilience enhances the stability of yields over time.

In contrast, relying on monoculture or focusing on a single-season crop can lead to depleted soil nutrients, increased vulnerability to pests and diseases, and higher risk in uncertain climates. Limiting biodiversity in farming can have similar detrimental effects, as it restricts the natural interplay that supports ecosystem health.

Therefore, the option that highlights enhanced soil health and risk reduction effectively encapsulates the advantages of crop diversification,