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1. Long-term Crop Rotation Impact on Soil Properties and Crop ResponseCrop rotations can be part of sustainable agriculture production by their effectiveness depends on understanding how crop rotations affect above- and below-ground crop characteristics. Objectives were to investigate crop rotation effects on shoot dry weight and root characteristics of cereal and grain legume crops at anthesis as well as on grain yield. Rotations were corn (Zea mays L.)-soybean [Glycine max (L.) Merr.], (CS); corn-soybean-spring wheat (Triticum aestivum L.)-field... S. Osborne, R. Lehman, W. Riedell, B. Chim |
2. Mixing Wheat Seed with Fertilizer in the Drill: Seedling Injury and Wheat ResponseMixing dry phosphorus fertilizer with winter wheat seed is common in Kansas to provide a starter fertilizer benefit to the crop. This study was designed to evaluate the effects of dry phosphorus (P) sources, rates and times fertilizer mixed with wheat seed, effects on early growth and overall productivity and yield of the crop. Two winter wheat studies were conducted in the 2018-2019 wheat growing season at Manhattan (Site 1) and Topeka (site 2) in Northeast Kansas. The previous crop for site... C. Weber, D. Ruiz diaz |
3. Rate and Depth of Liquid P Fertilizer Placement Affects Root Architecture and Arbuscular Mycorrhizal Fungal Associations in Grain CornA two-site, two-year study was conducted on corn root response to liquid phosphorus (P) fertilizer applications as a function of rate and depth of placement. Corn planted into no-till at two locations (Thrall & Snook, TX) was fertilized with banded liquid P applied 15 cm off seed row at different rates and depths. The upper portion of the root systems were excavated along with all top plant matter at the V10 - V12 growth stage. Digital images of washed roots were analyzed for spatial density... J. Mowrer |
4. Post-Wheat Summer Cover Crop Effects Crop Yields and Soil Properties in a No-till Dryland Cropping SystemTraditional dryland cropping systems in the semi-arid Great Plains include long fallow periods of up to 14 months to conserve soil moisture. However, such systems are inefficient even under continuous no-till (NT) management. As less water is necessary to produce forage compared to grain, cover crops (CCs) may be successfully integrated into dryland crop rotations for increased soil cover and potentially greater income when hayed or grazed as annual forages. One study was initiated in 2016 near... L.M. Simon, A.K. Obour, J.D. Holman, M.E. Schipanski, S.K. Johnson, K.L. Roozeboom |
5. Nitrogen Fertilizer Application and Depth of Moist Soil at Planting Affected Grain Sorghum YieldThe depth of moist soil before planting is critical for grain crop production in intensified dryland cropping systems. We investigated depth of moist soil at planting and nitrogen (N) fertilizer application rate effects on continuous grain sorghum yields on a Crete silt loam soil over 32-years in western Kansas. Treatments were four N rates (0, 20, 40 and 60 lb ac-1) in a randomized complete blocks design with four replication and depth of moist soil at planting determined with Paul... A.K. Obour, J.D. Holman, Y.M. Assefa, L.M. Simon, P. Mauler |
6. Effect of Soil and Foliar Application of Sulfur, Magnesium, Boron, and Zinc on Root Yield and Sugar Quality in Conventional Till and No Till Sugar BeetField experiment was conducted at the Eastern Agricultural Research Center in Sidney, MT, to determine the effect of S, Mg, B, and Zn on beet yield and sugar quality under conventional and no-till system. Split-plot design was used with 3.6 x 9.1 m experimental plots and four replicates. Tillage was main plot and micronutrient fertilizer was sub-plot. Tillage treatments included conventional and no-till. Fertilizer treatments included SUL4R-PLUS® (Ca & S), SUL4R-PLUS®B+Zn... C. Lim, C. Chen, C. Kowatch-carlson, B. Franck, T. Gross, R. Brown |
7. Lentil Inoculant, Potassium, Sulfur, and Micronutrient Effects on Yield and Protein in the Northern Great PlainsLentil (Lens culinaris Medikus) is an important crop, averaging more than 600,000 ac in MT and ND from 2016-20. However, relatively little is known about inoculant and fertility response in lentil in the U.S. northern Great Plains. The objective of this experiment was to evaluate the effect of rhizobial inoculant formulations (granular and seed-coat) and nutrient additions (K, S, and micronutrients), on lentil growth, yield, and seed protein. This study was conducted at six or seven university... P. Miller, C. Jones, S. Atencio, C. Chen, E. Eriksmoen, S. Fordyce, P. Lamb, M. Ostlie, J. Rickertsen, M.A. Grusak, M. Bourgault, B. Franck, P. Carr, S. Koeshall, K. Baber |
8. Adjusting N Rate is the First Step in N Management IntensificationNitrogen (N) management and sowing date are among the leading causes for winter wheat (Triticum aestivum L.) yield gap in Kansas. This research aimed to compare the two most common cropping sequences in Kansas (continuous wheat [Ct-Wt] and double-cropping of winter wheat and soybean (Glycine max (L.) Merrill) [Wt-Sy]) under two N management (standard and progressive) on wheat production. Standard N management consisted of one single broadcast N application as UAN at 80 lbs ac-1 at... L. Simao, R. Lollato, D. Ruiz diaz |
9. Nitrogen and Sulfur Colimitation to Winter Wheat YieldSulfur has become more limiting for wheat production in the Great Plains, and its deficiency can interact with N availability. The current work reports on yield and yield gaps of three winter wheat varieties as affected by N and S fertilization using the concept of co-limitation (CNS). Field studies evaluating 0, 10, 20 and 40 lbs S/a combined factorials with 50, 100, and 150 lbs N/ac and three hard red winter wheat varieties were conducted in eight environments resulting from the... R. Lollato, B.R. Jaenich, N. Nelson, M. Guttieri, D. Ruiz diaz, V. Sadras |
10. Does Late-season Nitrogen Impact Grain Protein Concentration in Wheat? A Global Meta-analysisSustainable improvements in wheat production entails increasing yield while maintaining or improving grain quality, which most of the time are negatively correlated. However, attemps to synchronize N supply with crop N demand through N timing can help to obtain both improved yield and quality by enhancing N use efficiency (NUE) and reducing N losses. Late season applied N is a challenging practice that when used correctly can generate posite NUE impacts. Additionally, a systematic assessment... R. Lollato, N. Giordano |
11. Soil Test Methods and Tissue Analysis to Assess Winter Wheat Response to Sulfur Fertilizer SourcesIdentifying how winter wheat responds to sulfur (S) fertilization through the use of soil test S (STS) methods has been a challenge across Kansas soils. The objective of this study was to evaluate soil test extraction methods for S as well as plant S nutritional status using different S fertilizer sources and rates. Sulfur response trials were established at 24 Kansas locations during two years (2019 and 2020). Fertilizer rate treatments included a control with... D. Ruiz diaz, C. Weber |
12. Nitrogen Fertilizer and Rhizobium Combinations to Improve Yield and Quality of Mung Bean and Adzuki Bean in MontanaMung bean and adzuki bean are new alternative grain legumes that may be grown in Montana and provide benefits to Montana’s cropping systems by improving long-term diversification and productivity. The objective of this study was to investigate mung bean and adzuki bean response to nitrogen fertilizer and rhizobium combinations to determine the optimum fertilizer management. Two adzuki bean (Organic and O.R varieties) and two mung bean (Organic and L.N varieties) cultivars were grown under... M. Etesami, F. Etemadi, T. Gross, B. Franck, C. Chen, C. Kowatch-carlson, S. Franck |
13. Agronomic Evaluation of Camelina Genotypes Selected for Yield, Oil Concentration, and NUEIn recent years, camelina (Camelina sativa L.) has received global recognition for its role as a biofuel crop and multipurpose addition to cereal-based farming systems in the Northern Great Plains (NGP). The present study objected to investigative the response of selected camelina cultivars, line 229, line 35, line 53, Suneson, and Check1 to nitrogen (N) and sulfur (S) inputs in terms of biomass, yield, seed oil content, and nitrogen use efficiency (NUE) at five nitrogen (N) rates, ranging... M. Etesami, C. Chen, B. Franck, S. Franck, C. Lu |