Nutrient removal calculators are perfect opportunities for apps. Relatively simple calculations with a database of crops. Knowing the amount of nutrients that a crop has removed or calculating nutrient requirements for a target yield are an essential part of agronomic planning.
Nutrient Removal from the Mosaic company.
This app is available for android or iPhone/iPad and is basic tool for calculating nutrient removal from number of crops. Once the crop is selected from an extensive list some preset yields are able to be chosen and then N,P,K,Mg and S removal is shown. Custom yields cannot be entered and metric units are not available. Unfortunately the yield choices are pretty limited (in some cases only 1 available) and for the life of me I couldn’t find how to change to metric units even though on some of the screen shots from Google Play it showed metric units.