Nutrient Management Research Projects

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Evaluation of in situ soil N mineralization rate to improve N input timing and use for corn

North Dakota Corn Utilization Council, 2013-2014, $27,527
(J.M. Teboh, and R. Wiederholt)

Inherent soil organic matter, composted, and fresh manure are important sources of N in crop production. However, the difficulty to adequately quantify the rate and amount of N mineralized in the field from these sources partly explains the paucity of research results needed to justify the use of soil organic matter in N fertilizer recommendations in and around ND. Goal: To estimate the quantity of N mineralized during corn growth in plots treated with fresh and composted cattle manure, and urea. Objective: to evaluate the relationship between the rate of N mineralization and N uptake of corn at different growth stages. Nitrogen supply rate to crops can be used in N recommendation plans to enhance crop effective use of N fertilizer and productivity.

Evaluation of wheat yield response to nitrogen-based enhanced efficiency fertilizer (EEF) in North Dakota and Montana

Koch Agronomic Services, LLC, $29,022
(J.M. ,Teboh, O. Walsh, M. Ostlie, and E. Aberle)

Goal: To evaluate relative efficacies of commercially available N-enhanced efficiency fertilizers (EEFs) and new industrial products from inefficient commercialized products for mitigating N loss from applied fertilizer. Objective 1: To compare spring wheat yield relative response to urea and the EEFs. Objective 2: To evaluate the efficiency of N uptake from urea and N-based enhanced EEFs applied at various rates to spring wheat.

Evaluating performance and agronomic efficiency of nitrogen extenders and additives for corn

Weyerhaeuser Company, 2013, $14,201
(J.M. Teboh and S. Zilahi-Sebess)

The objective of this study is to evaluate the responsiveness of corn growth and grain yield and quality to commercial N-based enhanced efficiency fertilizers (N extenders and additives). Producers in ND that apply fertilizer in the fall, and have coarse soils can potentially benefit from using an N extenders and additives if N loss can be minimized, NUE is improved, grain yields and quality are optimized, and if cost is justified. This experiment will compare the NUE of corn fertilized with various EEFs applied at different rates in ND.

Evaluation of the effect of Gavilon® 30 and MMRREE concentrate on corn vigor and yield

Gavilon Group LLC., 2013, $8,557.
(J.M. Teboh and B.G. Schatz)

Several synthetic and organic products are sold each year to producers to enable them boost crop productivity by way of applying cheaper multi elements in a single product, and a single application. The relative effectiveness of these products needs to be investigated before any conclusive recommendations can be made for their use. Gavilon® 30 and MMRREE are a few of these products undergoing research to determine their effects on crop performance. Objective: To evaluate the effect of Gavilon® 30 and MMRREE concentrate on vigor and yield in corn.

Evaluation of top-dress Arborite® urea treated fertilizer applications on corn performance

Gavilon Group LLC., 2013, $6,552.
(J.M. Teboh and B.G. Schatz)

Arborite® is used to coat urea granules and commercialized as a urease inhibitor to control fertilizer N release and loss through ammonia volatilization.Our objective is to  evaluate the effect of top-dress application of urea coated with Arborite®, on corn growth and grain yield performance when applied to soil.