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Full-Text Articles in Life Sciences
Wheat Grain Yield And Protein Response To Nitrogen And Sulfur Rates, B. R. Jaenisch, R. P. Lollato
Wheat Grain Yield And Protein Response To Nitrogen And Sulfur Rates, B. R. Jaenisch, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Winter wheat is often double-cropped after soybeans in no-tillage systems. The soybean crop removes large quantities of sulfur (S), which might unbalance ratios of nitrogen (N) to S for the following wheat crop. Our objective was to evaluate the responses of two wheat varieties to three N and four S rates representing a range of N:S ratios. The experiment was arranged as a complete factorial with a split-split-plot design. Variety was the whole-plot, N the sub-plot, and S the sub-sub plot. Nitrogen rates were 50, 100, and 150% of the recommended rate for 60 bu/a, which corresponded to ~45, 87, …
Occasional Tillage And Nitrogen Application Effects On Winter Wheat And Grain Sorghum Yield, A. K. Obour, J. D. Holman, A. J. Schlegel
Occasional Tillage And Nitrogen Application Effects On Winter Wheat And Grain Sorghum Yield, A. K. Obour, J. D. Holman, A. J. Schlegel
Kansas Agricultural Experiment Station Research Reports
Occasional tillage ahead of winter wheat planting could alleviate herbicide-resistant weeds, redistribute soil acidification, and improve seedbed at wheat planting. The objective of this study is to determine occasional tillage and nitrogen (N) fertilizer application effects on winter wheat, and grain sorghum yields and soil quality in a wheat-sorghum-fallow cropping system. Treatments were three tillage practices: 1) continuous no-tillage (NT); 2) continuous reduced-tillage (RT); and 3) single tillage operation every 3 years (June-July) ahead of winter wheat planting [occasional tillage (OT)]. The sub-plot treatments were assigned to four N fertilizer rates (0, 40, 80 and 120 lb/a of N). Preliminary …
Integrated Wheat Management For Improved Wheat Yield And Protein In Kansas, B. R. Jaenisch, R. P. Lollato
Integrated Wheat Management For Improved Wheat Yield And Protein In Kansas, B. R. Jaenisch, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
In Kansas, seven to nine million acres of winter wheat are sown annually with grain yields averaging about 40 bu/a. Variety selection and management strategies are critical decisions to maximize wheat yield. Thus, the main objective of this experiment was to evaluate four wheat varieties and their response to six management strategies at three locations in Kansas. These strategies included a farmer practice, enhanced fertility, economical intensification, increased foliar protection, water-limited yield, and increased plant productivity. Locations were pooled based on tillage practice and environment within Kansas; conventional till in central (Hutchinson and Belleville), and no-till in western (Leoti). In …
Plant Growth Regulators To Decrease Wheat Height In High Fertility Scenarios, F. D. Spolidorio, R. P. Lollato
Plant Growth Regulators To Decrease Wheat Height In High Fertility Scenarios, F. D. Spolidorio, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Lodging is a common concern in wheat production, and its intensity depends on many factors including the straw strength of the variety, nitrogen (N) levels, and plant growth regulator (PGR). However, there are limited data exploring how current Kansas wheat varieties respond to PGR applications at different fertility levels. Thus, our objective was to assess the effects of PGR on wheat varieties exposed to different levels of N fertilization. A field trial was established in a split-split-plot design and four replications in two Kansas locations (Great Bend and Ashland Bottoms) during the 2017–18 growing season. Factors evaluated were two N …
Historical Soybean Study: Grain Filling × Nitrogen Fixation, S. Tamagno, I. A. Ciampitti
Historical Soybean Study: Grain Filling × Nitrogen Fixation, S. Tamagno, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Genetic gain is characterized by comparing the performance of genotypes from a different year of release. Historic studies are useful to understand changes in yield-related traits that also contribute to yield potential. This study aims to quantify yield improvement for soybean through a set of seven genotypes with different years of release, and their respective numerical components, with a focus on final seed weight generation under two different nitrogen (N) conditions. Changes in biological N fixation (BNF) were quantified during the seed-filling period (SFP). Non-linear models were fit to the data to characterize seed weight and BNF changes throughout the …
Intensive Wheat Management For Yield And Quality: The Role Of Variety, Environment, And Management Practices, R. P. Lollato, B. R. Jaenisch, D. Marburger
Intensive Wheat Management For Yield And Quality: The Role Of Variety, Environment, And Management Practices, R. P. Lollato, B. R. Jaenisch, D. Marburger
Kansas Agricultural Experiment Station Research Reports
Management (M), variety (V), and environment (E) greatly influence wheat yield and quality. With the objective of determining the partial influence of V, E, and M, we conducted a field experiment where we imposed four management intensities to five wheat varieties during six site-years in Kansas and Oklahoma. Management intensities were 1) low-input (N fertility for a yield goal of 60 bu/a); 2) high-input (foliar fungicide, sulfur and chloride fertilizers, growth regulator, and nitrogen (N) fertility for a yield goal of 100 bu/a); 3) high-input minus fungicide; and 4) high-input minus additional N. We selected commonly grown wheat varieties with …
Including Legumes In Wheat-Bermudagrass Pastures, L. W. Lomas, J. L. Moyer
Including Legumes In Wheat-Bermudagrass Pastures, L. W. Lomas, J. L. Moyer
Kansas Agricultural Experiment Station Research Reports
Use of legumes in wheat-bermudagrass pastures did not affect summer cow gains in 2018. Forage availability was greater (P<0.05) where nitrogen (N) alone was used than where crimson clover and ladino clover were used in the Legume system. Estimated forage crude protein (CP) was similar (P>0.05) for the Legume and Nitrogen systems.
Pre-Plant Nitrogen Rate And Application Method And Side-Dress Nitrogen Rate Effects On Corn Grown No-Till On A Claypan Soil, D. W. Sweeney, D. Ruiz-Diaz
Pre-Plant Nitrogen Rate And Application Method And Side-Dress Nitrogen Rate Effects On Corn Grown No-Till On A Claypan Soil, D. W. Sweeney, D. Ruiz-Diaz
Kansas Agricultural Experiment Station Research Reports
Corn yield in 2018 was increased by about 5 bu/a with knife application of pre-plant nitrogen (N) fertilizer compared with broadcast application. Fertilizing with increasing rates of N applied pre-plant, at side-dress, or both had little effect on yield or yield components of corn in 2018.
Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer
Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer
Kansas Agricultural Experiment Station Research Reports
A tall fescue production study was conducted at two locations, beginning in the fall of 2016 and the fall of 2017. At both sites, phosphorus (P) fertilization rate only affected the spring harvest, with few differences in yield. Applying nitrogen (N) in late fall or late winter resulted in greater spring yields than applying N in spring or not applying N. However, at Site 1 in 2017 fall harvest yields were greater from the spring N application, but this response was less at Site 2 in 2018. In both years, applying N increased tall fescue yield, but at Site 2 …