--- title: Entering Fertilizer Blends in Regrow’s Nutrients Stage description: This articles walks through steps required to enter custom fertilizer blends in MRV. --- [Skip to content](https://help.regrow.ag/entering-fertilizer-blends-in-regrows-nm-stage#main-content) English Show submenu for translations [Customer portal](https://help.regrow.ag/support?hsLang=en) ![Regrow\_logo-1.png\]](https://help.regrow.ag/hs-fs/hubfs/03.%20Logos/Regrow_logo-1.png?height=40&name=Regrow_logo-1.png) Open main navigation Close main navigation - English Show submenu for translations - [Customer portal](https://help.regrow.ag/support) - [Go to regrow.ag](https://www.regrow.ag/) [Go to regrow.ag](https://www.regrow.ag/) How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://help.regrow.ag/?hsLang=en) 2. [MRV](https://help.regrow.ag/mrv?hsLang=en) 3. [Data entry tips and guidelines](https://help.regrow.ag/mrv?hsLang=en#data-entry-tips-and-guidelines) # Entering Fertilizer Blends in Regrow’s Nutrients Stage ## This articles walks through steps required to enter custom fertilizer blends in MRV. When entering a fertilizer blend into Regrow’s Nutrients stage, each component of the blend should be entered as a **separate event in MRV**, all recorded with the same application date. **Example: Blend of MAP and Urea** **Case 1: You know the total N and P applied** - Suppose total applied **N = 45 lbs**, **P = 5.76 lbs** 1. Calculate MAP applied: - NPK ratio of MAP = 11-52-0 - `Product rate = lbs of P ÷ %P in MAP` - If 5.76 lbs of P were applied → `MAP = 5.76 ÷ 0.52 = 11.3 lbs` 2. Calculate N from MAP: - `Product rate of MAP x N% in MAP` - `11.3 × 0.11 = 1.21 lbs N` 3. Calculate remaining N from Urea: - `45 – 1.21 = 43.79 lbs N` 4. Calculate Urea applied - NPK ratio of Urea = 46-0-0 - `Product rate = lbs of N ÷ %N in Urea` - `43.79 ÷ 0.46 = 95.19 lbs` Enter both **11.3 lbs MAP** and **95.19 lbs Urea** as **separate events in MRV** with the same date. **Case 2: You know the amount of MAP and Urea applied directly** Simply enter the MAP and Urea quantities as **two separate events** in MRV with the same date. 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