Is it true that farmers prefer to use seeds which give a low yield?

The given statement is false.

Farmers strive to use seeds that will yield the highest possible yield. High yield is critical for farmers because it determines their income and profitability. They will typically select seed varieties that have been specifically bred or developed for high yield, high quality, and pest and disease resistance. 

When selecting seed varieties, farmers will also consider factors such as seed cost, ease of growing, and adaptability to local growing conditions. In short, farmers will use seeds that they believe will provide them with the best return on investment in terms of yield, quality, and other critical factors.