Which of the following is NOT an environmental condition needed for ergots to form?

The formation of ergots, which are fungi that primarily infect grasses and cereals, is closely related to particular environmental conditions that favor fungal growth and development. Cool, wet weather is crucial as it promotes the growth of the ergots. Similarly, splashing water is also important because it aids in the spread of fungal spores, helping to facilitate infection.

Strong wind, while not a primary factor, can contribute to spore dispersal; however, it is not an essential condition for ergots to form.

In contrast, dry soil is not conducive to ergots forming since dry conditions inhibit the growth of the fungus. Therefore, dry soil is identified as the environmental condition that does not support the development of ergots, making it the correct answer. The presence of moisture, both in the air and in the soil, is generally fundamental for the growth of fungi, including ergots.