Similarly a fertiliser for feeding grass in the spring will be high in nitrogen. To remain healthy, plants also need other nutrients, such as calcium (Ca), sulphur (S) and magnesium (Mg), as well ...

Beans are a key food at the dietary level, boasting high nutritional value and constituting the most directly consumed legume ...

When animals digest food, biochemical reactions favor the "light" isotope of nitrogen (14 N). Consequently, the degradation products that are produced in their body contain high proportions of 14 N.