Serradella (Ornithopus spp.) is one of the most important annual legumes for pastures. Its growth pattern is similar to that of sub clover but generally performs better on sandy acidic soils. It also grows well on many loams and non-acidic soils. Serradella makes a big difference to the whole environment on many properties. It improves soil structure, nitrogen and organic matter levels, increases biological activity, and increases the numbers of soil organisms like earthworms.
When combined with good management the increased plant residue also prevents or greatly reduces soil erosion risk, especially when sown with perennial summer grasses.