Perennial Experiences with Site-Specific Fertilization and Harvest

Abstract

The “site-specific farming” adjusts the technical operations of the small scale altering growing conditions. First of all the main ideas and the re- alisations to identify the sites are given. The practical realization of the specific production techniques requires specialised functions of the fertil- izer distributor and the harvesting machine, especially the accurateness and control of the yield measurement. The essence of this production sys- tem is to determine the amount of N application precisely for each site at a certain date. There are several models and methods: the consultant or the reflection System. As a result increasing yield or saving of fertilizer has to be expected. An overview about yield and fertilization does not give a clear picture. The values of all variants are compared with the customary values. The economic viability is based on several effects, which are compared to the expenses.