Patent ID: 7171912
Filing Date: 2007-02-06
Classification: A01B,A01C,Y02P,Y10S

Abstract:
1. A method implemented in at least one computer program to provide a map of site-specific amounts of a soil nutrient to be applied in fertilizer to an agricultural field divided into sites, the method comprising: calculating site-specific measures for soil nutrient existing in the field; calculating for the field, by use of a map of site-specific measures of a soil wetness index, a map of site-specific amounts of soil nutrients needed to produce at each site a maximum possible crop yield; and subtracting, from the site-specific amounts of soil nutrient needed to produce at each site a maximum yield, the site-specific measures for soil nutrient existing in the field, thereby producing a map of site-specific amounts of soil nutrient to be applied in fertilizer to the field.