Patent ID: 7188450
Filing Date: 2007-03-13
Classification: A01C

Abstract:
1. A method for in-season nutrient application to a crop including the steps of: (a) determining a maximum potential crop yield for a field; (b) determining a nutrient response index for a field; (c) determining a reference coefficient of variation for the nutrient response index; (d) measuring a normalized difference vegetation index for a plot within said field; (e) determining a coefficient of variation within said plot; (f) determining a predicted yield for said plot; (g) determining an attainable plot yield with added nutrient as a function of said predicted yield, said nutrient response index, and said reference coefficient of variation; (h) determining the nutrient removal at said predicted plot yield; (i) determining the nutrient removal at said attainable plot yield; (j) determining the amount of additional nutrient which must be supplied to achieve said attainable plot yield; and (k) applying said amount of nutrient to said plot.