One bloke with a hoe digs, and pulls up the clod of earth. Woman follows with bucket and s/s mug, pours in fertilizer, covers it up and tramps on it with her foot. Been doing it this way since year dot. Never throw, only dig and cover. However, once every 3-4 years we will buy NC (organic) or chicken poo, and then we throw, not dig, as a supplement for the soil, not the trees.