the information received from the control system via the computer for further processing thus the recipe is a listing of the application rates desired for the multiple products to be applied in the defined zones of the gridded field as mentioned above fig5 illustrates a gridded field the field is delineated by latitude and longitude so that zones may be created for use with a desired grid recipe the zone consists of one or more squares for example or units the squares or units preferably have a width dimension that is a multiple of the boom width to simplify the method of the invention for example the unit shown in fig5 has a width 34 a 34 and a length 34 b 34 the zones need not be regular geometric shapes however for example zone 1 is shown as a 3 u00d7 3 square and zone 3 is a 2 u00d7 7 rectangle whereas zone 2 has an irregular shape the type of product and the application rate for each different type of product is set in the grid recipe for each zone for example with reference to fig5 if a farmer begins at the northwest corner nw of the field shown in zone 1 the present invention would dispense known amounts of the various products or plant seeds at defined depths as defined in the grid recipe.