Producers Blog

As we close the book on this growing season, it is time to look to the next season and the management decisions that have to be made. A lot of decisions revolve around nutrient management and what type of fertilizers should be applied, considering commodity prices.

There are 17 nutrient elements needed in order for a corn plant to complete its lifecycle. There are macronutrients, which are used in larger quantities, and micronutrients which are needed in smaller amounts. When referring to liquid fertilizer applications, a lot of retailers/growers say “10-34-0” or “8-20-5” – this is indicating the percentages of Nitrogen-Phosphorus-Potassium (N-P-K) in the liquid blend.

Other nutrients such as Sulfur and Zinc can be added as well, which could be a blend of 8-20-5-5-.5 (N-P-K-S-Zn). This is sometimes referred to as “triple nickel.” They are referred to in this manner because N, P and K are macronutrients (known as the primary elements). These nutrients are generally the focus for growers during their spring and summer fertilizer applications because they usually have the biggest impact on yields.

Part 2: Understanding Potassium and Its Effect on Your Field

Part 3: Understanding Phosphorus and Its Effect on Your Field

Part 4: Understanding Nitrogen and Its Effect on Your Field

All three macronutrients play an intricate role in the development of a plant and its ability to achieve its highest yield potential.  In a market like the one we are currently in, it is important to be more efficient with inputs and not simply cut them out.

N-P-K are the nutrients that are removed from the soil in the largest amounts at harvest. Nitrogen is often looked at as the major need, but Phosphorus and Potassium play important roles as well and each one influences the efficiency of the other. Soil samples should be taken to help identify ways to be more efficient with nutrient management. Identifying and addressing both deficient areas and what adjustments need to be made in application, timing and rates will help you better accommodate weather patterns and achieve the best return on investment.

Ward, Raymond C., Ph.D. “Ward Laboratories, Inc.: WardGuide.” Ward Laboratories, Inc.: WardGuide. Ward Laboratories, Inc., n.d. Web. 29 Nov. 2016.