CSA crops must be produced using one or more CSA practices:

(a) Field corn produced using no-till, reduced till, cover crops, nitrification inhibitors, split in-season nitrogen application, or no fall nitrogen application;

(b) Soybeans produced using no-till, reduced till, cover crops, or nitrification inhibitors; or

(c) Sorghum produced using no-till, reduced till, cover crops, nitrificiation inhibitors, or split in-season nitrogen application.