Indeterminate nodules are the only type found in Caesalpiniodeae and Mimosoideae and the most common type in Papilionoideae (Sprent, 2001; p. 32). As a result of the variety of ways the plant is infected by rhizobia, there are different types of nodules.
Minerals are inorganic nutrients that are needed in relatively small quantities by the horse. The essential major minerals are calcium, phosphorus, magnesium, sodium, chloride, potassium and sulfur. The essential trace minerals needed are iron, zinc, copper, selenium, manganese, iodine, and cobalt.
Alfalfa hay is an excellent source of energy, protein, calcium and some other nutrients for horses. Its concentrations of protein and calcium meet the nutrient needs of horses in high levels of. production, such as growth and lactation, but exceed the nutrient requirements of horses in other. life stages.