The pea/oat or pea/triticale is excellent for haylage or silage. These mixes have the same benefits for livestock farmers as the soybean/summer grass mixes.

Peas can handle routine summer temperatures in the low-mid 80s. Peas can be grazed. Peas aren’t shade tolerant so they don’t do well when sown into row crops. Frankly outside the mixes I think the clovers may be more versatile.

Chickling Vetch: Also known as “AC Greenfix.” It will fix nitrogen faster both in the fall (it winterkills about the same time as the peas) and in the spring. AC Greenfix seed is more expensive and harder to plant due to it’s shape.

Hairy Vetch is the strongest nitrogen fixer among the annuals. Hairy vetch easily fits into vegetable rotations. I have seen two foot vine growth and numerous fat nodules on vetch in early-mid April after a mildly wet fall and an early spring. It will be harder to fit into field crop rotations, especially corn-soybeans.

Radishes, such as the groundhog radish fix nitrogen and can be eated by wildlife, such as deer. Maybe domesticatedanimals.