Proceedings
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| Filter results16 paper(s) found. |
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1. Soil Health: Approaches in Fertility ManagementInconsistent grain yield and in some cases variable yield response to fertilizer inputs suggest improving fertility management strategies with greater emphasis towards resilient cropping systems may also improve nutrient efficiency. The soil microbiome may affect nutrient mineralization, nutrient movement to roots, disease incidence, and other specialized relationships (e.g., nodule formation in soybean (Glycine max L.)). Although within-field grain yield variability has correlated... K. Steinke |
2. Influence of Plant Growth Regulators and Nitrogen Rate on Soft Red Winter Wheat Growth and YieldExcessive spring nitrogen (N) applications on wheat (Triticum aestivum) can result in reduced stem rigidity leading to plant lodging prior to harvest. Lodged wheat may reduce grain quality due to inhibition of nutrient transport from roots to grain or decrease grain yield through the inability to thresh lodged plants. Palisade (trinexapac-ethyl [TE]) is a newly labeled plant growth regulator for wheat production in Michigan and was designed to decrease internode length and increase stem thickness... |
3. Residue Harvest Effect on Irrigated, No-till Corn Yield and Nitrogen ResponseImmobilization of applied N is expected when much high C:N crop residue remains in the field as is typical following corn grain harvest. Immobilization of N is expected to be less if crop residue is less. The effect of reduced immobilization on N availability may more than compensate for N removed in residue harvest. Therefore, applied N requirement for a following corn crop may be less if crop residue is reduced through harvest. Residue removal decreased the economically optimal N rate (EONR) by... |
4. Starter Fertilizer for Row Crop Production Under No-till Conditions in Eastern NebraskaStarter fertilizer application often results in increased corn and sorghum yield under no-till conditions, probably due to lower soil temperatures as compared to tilled soil. Five dryland and 5 irrigated corn trials. and 12 dryland grain sorghum trials were established after soybean in 2002 and 2003 on rolling land in eastern Nebraska with different soil types and topographic positions. Three placement positions were compared: in the seed furrow. over the row. and 2" to the side and 2" deep (2x2).... |
5. Irigated Soybean Response to Nitroen Applied During Early Pod FormationHigh yield soybean ( Glycine max L.) has a high rate of N uptake during grain fill with maybe 2/3 of the N derived from the atmosphere. The rema ining needs to come from the soil. Previous research has found that the probability of response to N applied at early pod development (R3) for yield trials, including 44 with mean yield >60 bu/A, we re conducted in Nebraska to determine effect on soybean yield of applying N and S to the soil at R3. With 27 lb/A N applied and >60 bu/A yield, mean yield increases... |
6. Integrating Multiple-Input Management Systems to Improve Soft Red Winter Wheat Grain YieldContinued improvements in wheat (Triticum aestivum L.) grain yield have cast greater interest on utilizing multiple inputs within enhanced management systems. Less than recommended seeding rates of modern varieties may utilize inputs more efficiently when subjected to enhanced management. The objective of this study was to evaluate plant growth, grain yield, and expected economic profitability for multiple agronomic and nutrient inputs across different production intensity levels.... K. Steinke, S. Purucker |
7. Adjusting Soybean Seeding Rate and Nutrient Strategies to Promote Nutrient Uptake in Irrigated and Non-Irrigated SystemsIncreases in total dry matter accumulation (TDM) can impact soybean (Glycine max L. Merr.) grain yield. However, the relationship between nutrient uptake and dry matter (DM) across seeding rates and influences on grain yield under irrigated and non-irrigated conditions remains uncertain. Two multi-year trials were established near Lansing, MI to investigate soybean dry matter accumulation, partitioning and remobilization; nutrient accumulation, partitioning, and remobilization; grain... K. Steinke , C. Terwillegar |
8. What’s Working (or Not) in Winter WheatMichigan winter wheat growers produce some of the greatest soft red and white wheat (Triticum aestivum L.) grain yields in the U.S. with statewide averages > 71 bu A-1 since 2015. Interest in enhanced management strategies continues to increase but maintaining or improving profitability has become increasingly important as broad implementation of enhanced management has not produced consistent yield gains. Increased demand for wheat straw has cast greater focus... K. Steinke |
9. Winter Wheat Grain and Straw Impacts from Autumn Starter and Spring Nitrogen Fertilizer StrategiesThe overwintering success of winter wheat (Triticum aestivum L.) can be a determining yield factor in Michigan. Autumn-applied starter fertilizer may affect establishment, nutrient uptake, tiller production, and grain and straw yield. The objective of this study was to evaluate soft red winter wheat (SRWW) grain and straw yield in response to autumn applied starter fertilizer, spring nitrogen (N), and varietal stature. A two-year randomized complete block split-plot design with... K. Steinke, L. Thomas |
10. Soybean Growth and Yield Effects from Starter Fertilizer and Nitrogen ApplicationSpring Michigan weather variabilities and earlier planting dates may provide opportunities for starter fertilizer to affect soybean (Glycine max L) early season dry matter production while also decreasing the time interval for nutrient accumulation (i.e., lag-phase), but impacts on initiating biological N fixation (BNF) are not well known. Two trials were established near Lansing, MI to examine the effects of starter fertilizer and multiple nitrogen (N) application timings across two... K. Steinke, S. Soat |
11. 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, 15N... K. Steinke, S. Soat |
12. Utilizing Fertilizer and Fungicide Strategies to Enhance Winter Wheat Grain and Straw ProductionThe establishment and overwintering success of Michigan winter wheat (Triticum aestivum L) are often determining yield factors but identifying both autumn and in-season practices that may enhance yield and economic return can be difficult. Additional demand for straw has growers considering inputs that may not only affect grain yield potential but also overall biomass production and serve as another means to improve profitability. Recent research has documented significant grain and straw... K. Steinke, L. Suplito, M. Chilvers |
13. Impacts from Autumn Starter Fertilizer, Late-season Nitrogen, and Fungicide Timing on Winter Wheat Yield, Straw, and QualityIncreased demand for winter wheat (Triticum aestivum L.) and climate uncertainties have Michigan growers exploring intensive management strategies to improve both yield and profitability. Field studies investigated the influence of both early and late-season fertilizer applications with multiple fungicide timings on the yield and quality of winter wheat grain and straw. A full-factorial, randomized complete block design investigated two rates of autumn starter fertilizer (AS) (12-40-0-10-1,... K. Steinke, M.K. Suplito, M. Chilvers |
14. Finding the “Sweet” Spot: Nitrogen Strategies for Variable Sugarbeet Harvest TimingsEarly sugarbeet (Beta vulgaris L.) harvest is a new challenge facing the Michigan sugarbeet industry. Due to sugar processing capacity limitations, earlier sugarbeet harvest is necessary to ensure beet processing is complete by mid- to late-March. The early harvest time interval compounds the N application issue as a large percentage of applied N is utilized by the plant later in the growing season. Few data indicate how early or how late N can be applied and the subsequent effects on... K. Steinke, S. Fleming |
15. Is Field Crop Contamination with Heavy Metals an Emerging Concern?Heavy metal contamination of food, particularly food consumed by infants and young children, with arsenic (As), cadmium (Cd), and lead (Pb) is a major food safety concern in the United States and beginning to draw heightened regulatory scrutiny. Crop uptake of heavy metals also has high spatiotemporal variability due to multiple soil, field, climate and plant factors. Management strategies that minimize heavy metal uptake and translocation are needed. The objective of this field study was to 1)... K. Steinke, Z. Hayden, M. Suplito |
16. Influence of Soil Amendments and Topographic Position on Winter Wheat Heavy Metal UptakeField crop heavy metal accumulation poses a major challenge for reducing food contamination and is governed by complex interactions between soil physical and chemical properties, climatic conditions, and intrinsic plant traits. Addressing these challenges requires an understanding of heavy metal accumulation during crop development and effective pre-harvest field mitigation strategies. Two winter wheat (Triticum aestivum L.) field studies were conducted in Michigan focusing on 1) fertilizer... K. Steinke, M. Suplito, Z. Hayden |