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Full-Text Articles in Life Sciences
Does Winter Wheat Yield Response To Fungicide Application Depend On Nitrogen Management?, J. A. Romero Soler, L. O. Pradella, N. Giordano, G. Cruppe, R. P. Lollato
Does Winter Wheat Yield Response To Fungicide Application Depend On Nitrogen Management?, J. A. Romero Soler, L. O. Pradella, N. Giordano, G. Cruppe, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Nitrogen and fungicide are among the more important management tools to increase wheat (Triticum aestivumL.) grain yield in Kansas. However, there is limited information on whether hard red winter wheat grain yield is impacted by the interaction of nitrogen rates and foliar fungicide application. Thus, our objective was to evaluate the effects of different N rates with or without a fungicide application at Feekes 10.5 on grain yield of two winter wheat genotypes with contrasting disease resistances to leaf and stripe rust. Eleven field experiments were established across Kansas using a factorial structure of two fungicide management options …
Winter Wheat Response To Timing Of Fungicide Application During The 2020–2021 Growing Season, G. Cruppe, N. Giordano, L. M. Simão, L. Ryan, L. O. Pradella, J. R. Soler, R. P. Lollato
Winter Wheat Response To Timing Of Fungicide Application During The 2020–2021 Growing Season, G. Cruppe, N. Giordano, L. M. Simão, L. Ryan, L. O. Pradella, J. R. Soler, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Foliar fungicides applied at the flag leaf stage can improve wheat grain yield in Kansas, but there is limited information on the impact of earlier or combined applications of fungicide on wheat grain yield. We conducted a field study in six Kansas locations during the 2020–2021 growing season to evaluate the yield and test weight of the winter wheat variety WB-Grainfield in response to different fungicide application timings. The trial was conducted in a randomized complete block design with four replications to evaluate (1) a non-treated control; Topguard applied at 5 ounces per acre at (2) jointing, (3) heading; and …
Comparison Of Sensitivity To Fusarium Head Blight In Soft Red And Hard Red Winter Wheat Varieties, G. Sassenrath, K. Andersen Onofre, J. Lingenfelser, X. Lin
Comparison Of Sensitivity To Fusarium Head Blight In Soft Red And Hard Red Winter Wheat Varieties, G. Sassenrath, K. Andersen Onofre, J. Lingenfelser, X. Lin
Kansas Agricultural Experiment Station Research Reports
Fusarium head blight (scab) is a problem for wheat production in high rainfall areas. This is a report of research examining the response of wheat varieties on disease susceptibility and wheat yield and quality. Hard red wheat varieties had more disease than the soft red wheat varieties in 2021. Wheat yield was correlated with disease severity.
Wheat Yield Response To Nitrogen Rate Depends On Foliar Fungicide Application, R. P. Lollato, L. O. Pradella, N. Giordano, L. Ryan, L. M. Simão, J. R. Soler
Wheat Yield Response To Nitrogen Rate Depends On Foliar Fungicide Application, R. P. Lollato, L. O. Pradella, N. Giordano, L. Ryan, L. M. Simão, J. R. Soler
Kansas Agricultural Experiment Station Research Reports
Nitrogen (N) and fungicide are among the most important factors impacting wheat yields in Kansas. However, there is limited information on whether foliar fungicides interact with N rates in wheat yield determination. Thus, our objectives were to evaluate wheat yield as impacted by different N rates with or without the use of foliar fungicide. One field experiment was established using a factorial structure of five N rates (0, 30, 60, 90, and 120 pounds of N per acre) by two fungicide management practices (either absent or 13 fluid ounces per acre of Nexicor) in a split-plot design near Hutchinson, KS, …
Increasing Winter Wheat Grain Yield By Replicating The Management Adopted In High-Yielding Commercial Fields, L. Ryan, L. A. Haag, J. D. Holman, R. P. Lollato
Increasing Winter Wheat Grain Yield By Replicating The Management Adopted In High-Yielding Commercial Fields, L. Ryan, L. A. Haag, J. D. Holman, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Large winter wheat yield gaps between farmer yields and yield potential in the southern Great Plains indicate the need to improve recommendations of best management strategies to profitably bridge this gap. Many studies have been completed on individual management factors pre-determined by the individual researcher, but we are not aware of studies comparing combination of practices that producers are currently using, which would be more relevant for real-world scenarios. Our objective was to determine the yield gains resulting from management intensification using combination of practices currently adopted in commercial wheat fields. Four management intensities (i.e., Low, Average, High, and Top) …
Winter Wheat Response To Different Fungicide Management (Products And Timing Of Application) During The 2019-2020 Growing Season, G. Cruppe, B. R. Jaenisch, R. P. Lollato
Winter Wheat Response To Different Fungicide Management (Products And Timing Of Application) During The 2019-2020 Growing Season, G. Cruppe, B. R. Jaenisch, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Foliar fungicides can improve wheat grain yield in Kansas, but there is limited information on the efficacy of different products as well as the timing of application. We conducted a field study in five Kansas locations to evaluate the yield, test weight, and protein responses of WB-Grainfield to different commercial fungicides applied at different times during the growing season. The trial was conducted in a randomized complete block design to evaluate (1) a non-treated control; Topguard applied at 5 ounces per acre at (2) jointing, (3) heading, and (4) jointing plus heading; (5) Delaro applied at 6 oz/a at jointing; …
Impact Of Fungicide On Wheat, G. F. Sassenrath, H. Zhao, X. Lin
Impact Of Fungicide On Wheat, G. F. Sassenrath, H. Zhao, X. Lin
Kansas Agricultural Experiment Station Research Reports
This is a report of research to test the impact of fungicide and management on wheat yield and quality. Fusarium head blight (FHB), or scab, is a persistent problem in wheat production, especially in high rainfall areas such as eastern Kansas. Two cultivars of winter wheat varying in FHB sensitivity (Everest, moderately resistant, and KanMark, susceptible) were tested for control of FHB using fungicide treatments made to the seed prior to planting or to the wheat plant at heading, in tilled or no-tilled management. The wet spring of 2020 resulted in high FHB pressure, but dry conditions at harvest reduced …
Winter Wheat Variety Response To Flag Leaf Foliar Fungicide Application In 2019–2020, G. Cruppe, B. R. Jaenisch, R. P. Lollato
Winter Wheat Variety Response To Flag Leaf Foliar Fungicide Application In 2019–2020, G. Cruppe, B. R. Jaenisch, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Foliar fungicide can be an important tool in improving wheat yields, but its effectiveness is season- and variety-dependent. To evaluate the yield, test weight, and protein responses of different commercial winter wheat varieties to one foliar fungicide application around heading, we conducted a trial combining four winter wheat varieties and two fungicide management treatments in Manhattan during 2019–2020. The control treatment consisted of no fungicide application, and the alternative treatment consisted of 5 oz/a Absolute Maxx + NIS applied at heading. Varieties evaluated were Bob Dole, Larry, WB4269, and Zenda. The study was conducted under no-tillage practices following a previous …
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 …
Modeling Wheat Susceptibility To Disease, H. Zhao, G. F. Sassenrath, X. Lin, R. Lollato, E. D. De Wolf
Modeling Wheat Susceptibility To Disease, H. Zhao, G. F. Sassenrath, X. Lin, R. Lollato, E. D. De Wolf
Kansas Agricultural Experiment Station Research Reports
Fusarium Head Blight (FHB) or head scab is a disease caused by the soil-borneFusariumfungus. The disease occurs frequently in southeast Kansas and can result in reductions in wheat yield and quality because of the mycotoxins developed by the fungus. Timely application of fungicides during the heading period of wheat is one option to reduce the fungus and control the infection rate. This study reports our research on use of fungicides to control head scab and improve wheat yield. We developed a model to predict wheat heading date. Accurate knowledge of wheat stage is the first step in developing …
Use Of A Fungicide To Reduce Stomatal Conductance For Production Of Sweet Corn Planted At Different Populations With Limited Irrigation, D. W. Sweeney, M. B. Kirkham
Use Of A Fungicide To Reduce Stomatal Conductance For Production Of Sweet Corn Planted At Different Populations With Limited Irrigation, D. W. Sweeney, M. B. Kirkham
Kansas Agricultural Experiment Station Research Reports
Sweet corn in 2018 was affected by irrigation, plant population, and a fungicide applied for stomatal control. Even though measured stomatal conductance was unaffected and no disease pressure was noted, applying fungicide at V6 more than doubled the number of harvested ears per acre and per plant, but an additional application at R1 did not increase harvested ears. Applying 1 inch of irrigation at the VT growth stage resulted in approximately 20% greater number of harvested ears per acre and ears per plant, but did not increase fresh weight. Under these dry conditions, increasing plant population tended to decrease harvested …
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 …
Effect Of Fungicides On Southern Rust Of Corn, E. A. Adee, S. Duncan
Effect Of Fungicides On Southern Rust Of Corn, E. A. Adee, S. Duncan
Kansas Agricultural Experiment Station Research Reports
The decision to apply fungicides to corn is not an easy decision in Kansas, especially when grain prices are low. Numerous factors determine what diseases are present, and whether the plants will be defoliated enough to reduce yield. Correctly identifying the disease, knowing what environmental conditions favor the development of an epidemic, and knowing the hybrid’s resistance to the diseases can be known before making the decision. However, knowing if the conditions will be favorable for the spread of the disease up the plant is very unpredictable. A situation like a ‘perfect storm’ for foliar diseases defoliating corn occurred in …
Use Of A Fungicide To Reduce Stomatal Conductance For Production Of Sweet Corn Planted At Different Populations With Limited Irrigation, D. W. Sweeney, M. B. Kirkham
Use Of A Fungicide To Reduce Stomatal Conductance For Production Of Sweet Corn Planted At Different Populations With Limited Irrigation, D. W. Sweeney, M. B. Kirkham
Kansas Agricultural Experiment Station Research Reports
Sweet corn is a potential value-added, alternative crop for producers in southeastern Kansas. Corn responds to irrigation, and timing of water deficits can affect yield components. Even though large irrigation sources, such as aquifers, are lacking in southeastern Kansas, supplemental irrigation could be supplied from the substantial number of small lakes and ponds in the area. However, this may not be enough to improve the water use of the plant. Reducing stomatal conductance and adjusting seeding rate may also help reduce water stress and/or improve water use efficiency. The objective of this study was to determine the effect of limited …
Intensive Management Strategies To Close Wheat Yield Gaps In Central Kansas, B. R. Jaenisch, R. Lollato
Intensive Management Strategies To Close Wheat Yield Gaps In Central Kansas, B. R. Jaenisch, R. Lollato
Kansas Agricultural Experiment Station Research Reports
Winter wheat is the most widely sown crop in Kansas, and yields had not surpassed 50 bushels per acre until 2015-16, when average state wheat yield was 57 bushels per acre. However, recent estimates of the long-term winter wheat yield potential in central Kansas indicate that it lies around 75 bushels per acre. A particular crop’s yield gap in a given region is determined by the difference between potential and actual yields. The long-term yield gap in Kansas is approximately 45 bushels per acre, which corresponds to more than 50% of the yield potential. Yield gaps have the potential to …
Value Of Fungicide Application In Wheat Production In Southwest Kansas, A. J. Foster, R. Lollato, M. Vandeveer, E. D. De Wolf
Value Of Fungicide Application In Wheat Production In Southwest Kansas, A. J. Foster, R. Lollato, M. Vandeveer, E. D. De Wolf
Kansas Agricultural Experiment Station Research Reports
During the past several years, applying fungicide to wheat has become a more common practice. The availability of cost-effective generic fungicides, as well as the positive yield responses often reported, seem to be the potential drivers for the adoption of such practices by producers. We conducted a wheat fungicide trial in Garden City, KS, to answer the following questions: 1) Do fungicide applications pay? And 2) Can remote sensing technology be used to quantify the efficacy of different fungicide products? The study consisted of two wheat varieties sown on September 29, 2015 (Oakley CL, highly resistant to stripe rust; and …
Wheat Production, Gretchen Sassenrath, D. E. Shoup, R. Lollato
Wheat Production, Gretchen Sassenrath, D. E. Shoup, R. Lollato
Kansas Agricultural Experiment Station Research Reports
Wheat production in southeast Kansas is often limited due to high rainfall during the harvest. In some years, this high rainfall can exacerbate disease pressure, especially fungal infections. This study presents results from a test of fungicide applications to control Fusarium head blight (FHB) or scab in poor quality wheat.
Timing Of Strobilurin Fungicide For Control Of Top Dieback In Corn, Eric Adee, Stu Duncan
Timing Of Strobilurin Fungicide For Control Of Top Dieback In Corn, Eric Adee, Stu Duncan
Kansas Agricultural Experiment Station Research Reports
Significant yield losses can result from top dieback (TDB) in dent corn, which is caused by infection by the fungus,Colletotrichum graminicola, causing anthracnose. Research is limited on the effectiveness of fungicide application because of the unpredictable nature of the disease. Three field studies were established to assess the timing of fungicide application on foliar diseases that developed TDB, one in Illinois (2010) and the other two in Kansas (2015 and 2016). Fungicide applications at tasseling and later were effective in reducing the incidence of TDB by greater than 20% and increasing yield greater than 14 bu/a, or greater …
Timing Of Strobilurin Fungicide For Control Of Top Dieback In Corn, Eric Adee, Stu Duncan
Timing Of Strobilurin Fungicide For Control Of Top Dieback In Corn, Eric Adee, Stu Duncan
Kansas Agricultural Experiment Station Research Reports
Significant yield losses can result from top dieback (TDB) in dent corn (Zea mays), which is caused by infection by the fungus causing anthracnose (Colletotrichum graminicola). Research is limited on the effectiveness of fungicide application because of the unpredictable nature of the disease. Two field studies were established to assess the timing of fungicide application on TDB, one in Illinois (2010) and the other in Kansas (2015). Fungicide applications at tasseling (VT) and later were effective in reducing the incidence of TDB 20 to 30% and increasing yield 15 to 19 bu/a, or up to 10%, …