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.
In fact, essentially, theyâre rocks--and it can be difficult to imagine their being digested by a horse. But minerals are an essential part of the diet, despite the fact that, like vitamins, they contribute no energy whatsoever. Without their participation, horses could not metabolize fats.