2 . All fava beans edible, but some are better for eating, others for cover crops Smaller seeded cover crop favabeans should be planted in the fall, while culinary varieties are more of a sure … As a cover crop, fava beans have one of the highest nitrogen-fixing rates, and the large, deep roots break up even heavy clay and compacted soil. For maximum nitrogen, harvest crop … fava bean when grown in a four-species cover crop mix, and 3) determine how fava bean biomass and seed production compares with forage pea, a more common cool-season legume species for Montana. Vicia faba, also known in the culinary sense as the broad bean, fava bean, or faba bean, is a species of flowering plant in the pea and bean family Fabaceae.It is of uncertain origin: 160 and widely cultivated as a crop for human consumption. With that being said, it is not surprising beans have been a staple in the human diet since the beginning of time since they are a … In fact, most fava plants are grown as a cover crop rather than a food source. It is also used as a cover crop.Varieties with smaller, harder seeds that are fed to horses or other animals are called field bean, tic bean or tick bean. Fava beans are dual-purpose!