The stocking rate calculator has been developed to help landowners of properties <20 hectares calculate their stocking rate. You need this information to work out which part of the Healthy Rivers/Wai Ora: Proposed Plan Change 1 rules may apply to you. The stocking rate calculator is intended for use by landowners with properties <20 hectares only. The information it provides is indicative only, and we encourage you to either call one of our sustainable agriculture advisors on 0800 800 401. Owners of larger properties are encouraged to talk to certified farm nutrient advisors. You can find the contact details for CFNAs on our website.