Establishing pastures from the air by dropping superphosphate and clover is a very popular method for large grazing properties. The seed and fertilizer can be spread very evenly, quickly, and easily over all types of country. It is best done at the time of year when the soil surface is moist otherwise birds and ants will carry off the seed. Germination will be less than 5% but it is the cheapest method so that it can be carried out a number of times to build up the residual level of fertilizer in the soil.
Species with large seeds are established more easily than others. In some districts legumes may fail to nodulate. Best results follow from the use of fertilizer as it has a stimulating effect on the growth of all species especially legumes. Nitrogenous fertilizers stimulate the growth of grasses.