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.