High yield means more total income from more bushels per acre. Some varieties, especially the newer varieties, will yield much more than the older varieties can possibly yield. But high yield is only economical if you can produce rice of relatively high quality and without undue risk. High value means greater income from each bushel sold. Minimum risk means guaranteed yield and quality.
Varieties vary greatly from year to year in yield, quality or both, even with good management.
Resistant varieties often are not the highest yielding varieties, but the limited risks, reduced production costs and higher milling quality may offset the lower grain yields. Maximum economic returns may result from any of several strategies. For example, high economic returns can be obtained from a lower-yielding variety if the variety has higher milling yield and quality. Kaybonnet may fit this strategy. A very high yielding variety with somewhat lower milling yield and quality may net high returns, too.