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| Filter results13 paper(s) found. |
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1. Does Interseeded Cover Crops Composition Affect Corn N Fertilizer Needs and Corn and Soybean Yields?Cover crops are often recommended as a valuable practice to develop more sustainable cropping systems. However, interseeding cover crops may change the amount and timing of nitrogen (N) provided to the crop from decomposition (mineralization), which may increase or decrease the N fertilizer required to optimize corn grain yield. This study aims at understanding the effect of cover crop composition (single and multispecies) on soil biological measurements, corn N requirements, and corn and soy... S. Kodali, J.D. Clark |
2. Benchmarking Nitrogen Recommendation Tools for Nebraska Winter WheatAttaining high yield and high nitrogen (N) use efficiency (NUE) remains a current research challenge in crop production. Digital ag technologies for site-specific N management have been demonstrated to improve NUE. This is due to the ability of digital technologies to account for the spatial and temporal distribution of crop N demand and available soil N in the field, which varies greatly according to soil properties, climate, and management. In addition, winter wheat protein content is highl... J. Cesario pinto, L. Thompson, N. Mueller, T. Mieno, L. Puntel, G. Balboa |
3. Effects of Silicon Supplementation on Growth and Silicon Accumulation in Tall Fescue (Festuca arundinacea) and Bentgrass (Agrostis stolonifera)This study assessed the effect of silicon (Si) supplementation on biomass production and Si accumulation of tall fescue (Festuca arundinacea) and bentgrass (Agrostis stolonifera). Plants were grown in buffered Hoagland’s media (pH 6) with four Na2SiO4 treatments (0, 0.5, 1, 2, 4 mM). The two species responded differently to Si supplementation in terms of biomass. For bentgrass, biomass was enhanced by Si supplementation, but only significantly (... S. Qian, J. Unrine, H. Poffenbarger |
4. Manure Total Nitrogen Variability Due to Analytical Method and Total Solids ContentKnowing the nutrient analysis of a fertilizer source is essential to ensure adequate nutrients for crop growth, while not causing potential environmental impacts by overapplying nutrients. Using manure as a nutrient source can complicate matters as the nutrient content can be variable and the manure can come in a range of liquid to solid consistencies. There are multiple laboratory methods to determine different nutrient parameters and for manure total nitrogen levels the most common me... N.L. Bohl bormann, M.L. Wilson, E.L. Cortus, J. Floren, R.O. Miller, L. Gunderson |
5. Soybean Biological Nitrogen Fixation and Production As Affected by Starter Fertilizer, Nitrogen Application, and Planting DateMichigan spring weather variabilities and earlier planting dates may provide opportunities for starter fertilizer to influence early season soybean (Glycine max L. Merr.) dry matter production while simultaneously decreasing the time interval for nutrient accumulation. However, potential fertilizer impacts on inhibition of biological N fixation (BNF) are not well understood. Field studies established near Lansing, MI examined soybean total dry matter accumulation (TDM), nodulation, ... K. Steinke, S. Soat |
6. Cover Crop Species and Planting Methods Influence on Corn N Requirement in Southern IllinoisIt is well established that planting cover crops prior to corn (Zea mays L.) can influence soil temperature, moisture, and nitrogen (N) dynamics. These changes in soil along with the effects of cover crop on corn plant population can influence corn grain yield and N requirement. Two strategies to facilitate corn establishment and avoid N immobilization especially in winter cereal cover crops is by mixing cover crop species or skipping the corn row (precision planting). A randomized c... A. Sadeghpour, C. Kula, G. Sener, C. Vick |
7. Drainage and Nitrogen Management Affects Soil Health and Soil PropertiesMidwestern United States farmers rely on key fertilizer inputs and management of soil drainage to maintain productivity and profitability. Subsurface tile drainage is used extensively throughout the Midwest U.S. to lower the water table and drain waterlogged soils. To improve nutrient use efficiency and sustainable crop production, best management practices such as 4R nutrient stewardship framework is being promoted in conjunction with drainage water management technology. The 4R nutrient ste... H. Kaur, K.A. Nelson, G. Singh, G. Kaur |
8. Versatility of Mycorrhizal Fungi Applications to Increase Maize ProductivityWith rising fertilizer prices and continual water contamination issues, it is vital to establish management factors that maximize productivity, while minimizing nutrient losses to the environment. One potential practice for improving nutrient use and grain yields includes utilizing mycorrhizal fungi. The objectives of this research were to determine the efficacy of various mycorrhiza applications on root colonization and the subsequent grain yield responses of maize (Zea mays... L. Woodward, F. Below |
9. Individual Leaf Selection to Best Represent Whole-plant Nutrient Status in Modern Corn Cropping SystemsIn modern corn cropping systems, fertilization is often required to maintain plant health. Tissue sampling is commonly utilized to evaluate plant nutrient status and determine fertilizer treatment needs. Recommendations exist on which partition/leaf to select for accurate representation of the whole-plant. Recommendations change with growth stage, suggesting to sample the whole-plant at early-vegetative stages, the top-collared leaf at late-vegetative stages, and the ear-leaf during repr... B. Hanson |
10. Managing Trade-offs of Winter Rye As a Cover CropWinter rye (Secal cereale L.) is a commonly used cover crop in Wisconsin due to its effectiveness in reducing soil erosion, scavenging nitrogen, and improving soil health. However, the potential trade-offs of using grass cover crops are decreases in corn yield driven by nitrogen uptake and immobilization. The study aims to determine the single year effect of rye seeding rate on rye biomass and optimum nitrogen rate of the subsequent corn (Zea mays L.) crop, while a... M. Schauer, M. Ruark |
11. Improving Digital Soil Maps for Site-specific Soil Fertility Management Using Feature SelectionDigital soil mapping (DSM) has become an attractive option to manage site-specific soil fertility management thanks to its capabilities of creating highly accurate, fine-resolution (e.g., 3 m) soil maps with uncertainty measures associated with soil property predictions. One approach to making soil maps with geospatial technologies is to build statistical models using machine learning (ML) based on the relationships between environmental covariates (e.g., digital terrain attributes, satellite... C. Ferhatoglu, B.A. Miller |
12. Assessing the Impact of the 4R Nutrient Management on Nitrogen Use Efficiency in CornDetermining the best management practices for nitrogen (N) fertilizer application to corn is crucial to achieving the objectives of the 4 r's of nutrient stewardship. Although producers have a wide range of options regarding N fertilization, identifying the right rate, source, placement, and timing can significantly impact productivity and nitrogen use efficiency. Our objectives were to evaluate the agronomic efficiency (AE), and the corn grain yields as afected by different rates, source... D. Ruiz diaz, P. Morinigo |
13. Consideration of Clay Mineralogy for Enhanced Prediction of Optimal Corn Potassium Fertilizer RatesProperly calibrated potassium (K) fertilizer recommendations (KFRs) are critical for improving crop yields and maintaining environmental stewardship. Recent innovations in soil and crop management suggest that certain soil factors, including clay mineralogy, can be used to predict optimal K requirements in corn. The objectives of this study include 1) correlate soil K levels to corn yield, 2) calibrate KFRs with clay mineralogy data, and 3) determine the relationships among clay mineralogy, K... A. Ahlersmeyer, J. Clark, K. Osterloh, D. Clay |