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Agriculture

# Liquid Fertilizer Application Calculations

### Calculate how much liquid fertilizer you need to apply to deliver some number of pounds of Nitrogen to a field.

**How Much Liquid Fertilizer to Apply** To calculate how much liquid fertilizer you need to apply to deliver some number of pounds of Nitrogen to a field you need to know: * The percentage of Nitrogen in the fertilizer (A) * The weight per gallon of the fertilizer (B) * How many pounds of Nitrogen you want to apply per acre (C) * The total number of acres in the field (D) _Calculations:_ * Pounds of Nitrogen per gallon of fertilizer (E) = A x B * Gallons of fertilizer required to deliver desired amount of Nitrogen to one acre (F) = C / E * Number of gallons required to deliver desired amount of Nitrogen to entire field (G) = F x D Example: _Desired application:_ * 15 lbs. N (Nitrogen) per acre * 20 acre field _Fertilizer, liquid:_ * 10-10-10 formulation * Product weighs 10.69 lbs. per gallon * 10% of product is N _Calculations:_ * 10.69 lbs./gal. x 0.10 = 1.069 lbs. of N per gallon * 15 lbs. N/ac. ÷ 1.069 lbs. N/gallon = 14.03 gallons of product per acre required to deliver 15 lbs. N per acre * 280.6 gallons of fertilizer required to fertilize entire field **How Much Was Applied** To determine how much Nitrogen was actually applied to a field, the calculations are similar. You can use much of the information you already have about the fertilizer and the field. The amount of fertilizer actually applied is often different than the target due to things like logistical issues. In the example above, 280.6 gallons of fertilizer were required to hit the desired target of 15 lbs. of N. Applying 300 gallons of fertilizer instead of 280.6 gallons may have been cheaper or more efficient to deliver. So how many pounds of Nitrogen were actually delivered per acre if 300 gallons of fertilizer were applied instead of 280.6? * Total gallons of fertilizer (H) * Gallons of fertilizer applied per acre (I) = H / D * Pounds of Nitrogen applied per acre (J) = I x E Using the example above, how many pounds of Nitrogen were applied per acre? * 300 gallons of fertilizer applied to 20 acres = 15 gallons of fertilizer applied per acre * 1.069 lbs. N/gallon x 15 gallons/acre = 16.03 lbs. N/acre applied A Certified Crop Adviser (CCA) can make recommendations for how much to fertilize, when to fertilize, and how to deliver the fertilizer. Based on material from [Vineyard Team](http://www.vineyardteam.org/).

## What is Fulcrum?

Organizations worldwide trust Fulcrum’s SaaS-based data collection platform to capture and share reliable information about field activities, much faster than paper or other digital solutions. Standardized, easily customized, and well-integrated data collection delivers improved clarity for decision-making and better productivity for lower costs.

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Easily adapt to changing requirements with drag-and-drop app modification, full customization and extension capabilities, customizable reporting and alerting.
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Jim Metz

Vice President of Safety
FM Sylvan
Fulcrum speeds things up. It was almost instantaneous. It allows accountability for people running the job to see what their guys are doing to make sure they’re adhering to safety policies.

Aaron Vanover

Manager of Quality Assurance and Quality Control
Halton Company
Using Fulcrum, Halton Company’s quality control team provides richer, better documented support, enabling them to catch more issues.

Daniel Stepner

Senior Consultant