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Cover Crop Effect On Subsequent Wheat Yield In The Central Great Plains, David Nielsen, Drew Lyon, Robert Higgins, Gary Hergert, Johnathon Holman, Merle Vigil 2016 Washington State University

Cover Crop Effect On Subsequent Wheat Yield In The Central Great Plains, David Nielsen, Drew Lyon, Robert Higgins, Gary Hergert, Johnathon Holman, Merle Vigil

David C. Nielsen

Crop production systems in the water-limited environment of the semiarid central Great Plains may not have potential to profitably use cover crops because of lowered subsequent wheat (Triticum asestivum L.) yields following the cover crop. Mixtures have reportedly shown less yield-reducing effects on subsequent crops than single-species plantings. This study was conducted to determine winter wheat yields following both mixtures and single-species plantings of spring-planted cover crops. The study was conducted at Akron, CO, and Sidney, NE, during the 2012–2013 and 2013–2014 wheat growing seasons under both rainfed and irrigated conditions. Precipitation storage efficiency before wheat planting, wheat ...


A Brief History Of Corn: Looking Back To Move Forward, Jon Derek Pruitt 2016 University of Nebraska-Lincoln

A Brief History Of Corn: Looking Back To Move Forward, Jon Derek Pruitt

Doctoral Documents from Doctor of Plant Health Program

Maize was domesticated from teosinte in Mexico some 7,000 to 10,000 years ago and quickly spread through the Americas. It has become one of the most important crops at a local and global level. Two types, Northern Flint corn and Southern Dent corns provided the basis of the genetic background of modern maize hybrids. The development of hybrids, first double-cross and later single-cross hybrids, along with a transition to high input farming provided huge yield increases, which have continued to improve with improving technology.

Increase in maize production also caused a rise in Western corn Rootworm (Diabrotica virgifera ...


Personnel, Acknowledgments, L. W. Lomas 2016 Kansas State University

Personnel, Acknowledgments, L. W. Lomas

Kansas Agricultural Experiment Station Research Reports

Research Center Personnel, Kansas State University Southeast Agricultural Research Center.

Acknowledgments: We thank the following individuals, organizations, and firms that contributed to this year’s research programs through financial support, product donations, or services.


Annual Summary Of Weather Data For Parsons, M. Knapp 2016 Kansas State University, Manhattan

Annual Summary Of Weather Data For Parsons, M. Knapp

Kansas Agricultural Experiment Station Research Reports

Weather Data for Parsons, Kansas, 2015.


Evaluating Multi-Species Cover Crops For Forage Production, C. Davis, DeAnn Presley, J. K. Farney, Gretchen Sassenrath 2016 Kansas State University

Evaluating Multi-Species Cover Crops For Forage Production, C. Davis, Deann Presley, J. K. Farney, Gretchen Sassenrath

Kansas Agricultural Experiment Station Research Reports

Cover crops offer potential benefits for improving soil health, but establishment and management costs can be expensive. One way for farmers to recover these costs is to graze the forage, which benefits producers by integrating crop and animal production. More information is needed on the potential forage quantity and quality for grazing livestock of cover crops and mixed species of cover crops. Researchers have suggested that different plant species complement each other, but additional work is needed to determine how best to balance forage production and how competitive the various species are when added to a mix. Sixteen treatments were ...


Hydrologic And Nutrient Modeling Within An Agricultural Watershed In Southeast Kansas, V. J. Alarcon, Gretchen Sassenrath 2016 Kansas State University

Hydrologic And Nutrient Modeling Within An Agricultural Watershed In Southeast Kansas, V. J. Alarcon, Gretchen Sassenrath

Kansas Agricultural Experiment Station Research Reports

Access to safe, clean water is important to support society. Agricultural watersheds are often contaminated due to agricultural activities. Identification of specific factors contributing to impairment of water bodies is important to target remediation efforts. This research is designed to explore water quality within the Middle Neosho Watershed in southeastern Kansas to make more informed decisions in potential corrective actions.


Soil Microbial Activity With Depth In Claypan Soils Of Southeast Kansas, C. J. Hsiao, Gretchen Sassenrath, Charles Rice, L. Zeglin, G. Hettiarachchi 2016 Kansas State University

Soil Microbial Activity With Depth In Claypan Soils Of Southeast Kansas, C. J. Hsiao, Gretchen Sassenrath, Charles Rice, L. Zeglin, G. Hettiarachchi

Kansas Agricultural Experiment Station Research Reports

Enzyme activities in soil indicate the relative activities of microbes, which include bacteria, fungi, algae, and other organisms. Changes in soil management alter the composition and activity of soil microbes. Plants rely on soil microbes to break down soil nutrients, and make those nutrients available for plant growth. Symbiotic relationships between soil microbes and plants enhance plant growth and productivity. Alternatively, antagonistic relationships between the soil microbial community and plants limit plant production. Soil dwellers such as nematodes or disease-causing fungi such as Macrophomina phaseolina (the fungus responsible for charcoal rot) can be particularly deleterious to crop growth and yield ...


Improving Corn Production In Southeast Kansas, Gretchen Sassenrath, D. E. Shoup, X. Lin, J. Coltrain, J. Geren, D. Helwig 2016 Kansas State University

Improving Corn Production In Southeast Kansas, Gretchen Sassenrath, D. E. Shoup, X. Lin, J. Coltrain, J. Geren, D. Helwig

Kansas Agricultural Experiment Station Research Reports

Corn performance and yield varies as a function of the growing environment and soil properties. Components contributing to yield in corn were examined through on-farm measurements of soil properties in southeast Kansas. Environmental variability between the 2013, 2014, and 2015 growing seasons contributed to changes in yield. Management can also impact the amount of harvested yield.


2015 Soybean Production In Southeast Kansas, Gretchen Sassenrath, I. A. Ciampitti, D. E. Shoup, X. Lin 2016 Kansas State University

2015 Soybean Production In Southeast Kansas, Gretchen Sassenrath, I. A. Ciampitti, D. E. Shoup, X. Lin

Kansas Agricultural Experiment Station Research Reports

Crop performance and yield varies as a function of the growing environment and soil properties within the field. Optimal soybean planting in southeast Kansas usually occurs from mid-May to mid-June for full-season or late-June to early-July for doublecropped soybean. Planting is timed to capture fall rains and cooler temperatures during critical periods of bean development and yield formation and avoid mid-summer heat and drought. Changing planting configuration (row spacing and plant population), timing of planting, and cultivar selection are methods of optimizing soybean production for different growing environments.


2015 Crop Performance In Southeast Kansas, Gretchen Sassenrath, Jane Lingenfelser, L. Mengarelli, X. Lin 2016 Kansas State University

2015 Crop Performance In Southeast Kansas, Gretchen Sassenrath, Jane Lingenfelser, L. Mengarelli, X. Lin

Kansas Agricultural Experiment Station Research Reports

Crop variety testing determines the production potential of newly released crop cultivars in Southeast Kansas. The genetic potential is moderated by environmental conditions during the growing season as well as soil productive capacity.


Effect Of Timing Of Supplemental Irrigation And Nitrogen Placement On Late-Planted Sweet Corn, D. W. Sweeney, M. B. Kirkham 2016 Kansas State University

Effect Of Timing Of Supplemental Irrigation And Nitrogen Placement On Late-Planted Sweet Corn, D. W. Sweeney, M. B. Kirkham

Kansas Agricultural Experiment Station Research Reports

In 2015, increasing seeding rates increased the number of harvested sweet corn ears; however, total fresh weight did not increase above 22,500 seeds/acre. Sweet corn was little affected by limited irrigation or a fungicide applied for stomatal control.


The Impacts Of Elephant Grazing On Plant Succession In Tropical Forests Of Africa, Nadia Swit 2016 Cleveland State University

The Impacts Of Elephant Grazing On Plant Succession In Tropical Forests Of Africa, Nadia Swit

The Downtown Review

Succession occurs in an ecosystem when there is a change in the species structure and diversity in an ecological community over time. While this can allow for greater biodiversity, occasionally diversity can be stunted based on the level of disturbance and the invasiveness of the first pioneering species. As in the case of arrested succession, continual disturbance prohibits changes in the environment and suppresses species establishment. The effects of this continued disturbance are seen in the tropical forests in national parks in Uganda and Tanzania in Eastern Africa with African elephants (Loxodonta africana). The continuous browsing on trees by the ...


Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, Philip Barnes, Gary Pierzynski 2016 Kansas State University

Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, Philip Barnes, Gary Pierzynski

Kansas Agricultural Experiment Station Research Reports

The residual from previous high rate turkey litter applications, which were based on N requirements of the previous grain sorghum crop, increased soybean yield above that obtained from the residual of P-based turkey litter applications (low rate), commercial fertilizer, or the control. Even though early soybean growth was not significantly affected by residual treatments, the greatest dry matter production at the R6 growth stage was where the N-based litter had been applied and incorporated.


Timing Of Side-Dress Applications Of N For Corn In Conventional And No-Till Systems, D. W. Sweeney, D. E. Shoup 2016 Kansas State University

Timing Of Side-Dress Applications Of N For Corn In Conventional And No-Till Systems, D. W. Sweeney, D. E. Shoup

Kansas Agricultural Experiment Station Research Reports

In general, conventional tillage averaged nearly 40 bu/acre greater corn yield than no-till likely because of improved growth during the season. With conventional tillage, all side-dress treatments resulted in greater yield than with all N applied pre-plant. However, in lower-yielding no-till systems, the yield response to side-dress applications appeared to be greater for V10 applications compared with those at V6.


Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney 2016 Kansas State University

Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney

Kansas Agricultural Experiment Station Research Reports

Conventional tillage resulted in greater corn yield in 2015 than with reduced tillage or no-till. A tillage × N fertilizer treatment interaction showed that N placement did not affect corn yield in conventional or reduced tillage systems, but subsurface knife N placement in no-till resulted in greater yield than when N was surface-applied.


N, P, And K Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer, J. K. Farney 2016 Kansas State University

N, P, And K Fertilization For Newly Established Tall Fescue, D. W. Sweeney, J. L. Moyer, J. K. Farney

Kansas Agricultural Experiment Station Research Reports

Second-year production of tall fescue was affected by nitrogen (N) and phosphorus (P) fertilization rates at Site 1 in 2014 and only by N fertilization rates at Site 2 in 2015, with little effect from potassium (K) fertilization at either site.


Long-Term Nitrogen Addition Decreases Carbon Leaching In A Nitrogen-Rich Forest Ecosystem, X. Lu, Frank S. Gilliam, G. Yu, H. Chen, J. Mo 2016 Marshall University

Long-Term Nitrogen Addition Decreases Carbon Leaching In A Nitrogen-Rich Forest Ecosystem, X. Lu, Frank S. Gilliam, G. Yu, H. Chen, J. Mo

Frank S. Gilliam

Dissolved organic carbon (DOC) plays a critical role in the carbon (C) cycle of forest soils, and has been recently connected with global increases in nitrogen (N) deposition. Most studies on effects of elevated N deposition on DOC have been carried out in N-limited temperate regions, with far fewer data available from N-rich ecosystems, especially in the context of chronically elevated N deposition. Furthermore, mechanisms for excess N-induced changes of DOC dynamics have been suggested to be different between the two kinds of ecosystems, because of the different ecosystem N status. The purpose of this study was to experimentally examine ...


Nitrogen Management For Teff Hay Production, D. H. Min, J. L. Moyer 2016 Kansas State University

Nitrogen Management For Teff Hay Production, D. H. Min, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

Fertilization of teff with the ESN source of nitrogen (N) at the higher rates, 100 and 125 lb N/a resulted in increased seasonal forage production. The primary increase occurred in the second of three cuttings.


Adaptability Of Miscanthus Cultivars For Biomass Production, J. L. Moyer 2016 Kansas State University

Adaptability Of Miscanthus Cultivars For Biomass Production, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

In 2015, miscanthus dry matter (DM) did not differ between cultivars, averaging 10,250 lb DM/a. Total three-year production for the cultivars was also similar, averaging 26,170 lb/a.


Forage Production Of Hay-Type Sorghum Cultivars, J. L. Moyer, J. D. Holman 2016 Kansas State University

Forage Production Of Hay-Type Sorghum Cultivars, J. L. Moyer, J. D. Holman

Kansas Agricultural Experiment Station Research Reports

Forage production was measured from three cuttings of 14 hay-type sorghum-sudan entries. Total annual yield was greater from ‘AS5201’, ‘Sweet Sioux WMR’, and ‘AS9302’ than from five lower-yielding cultivars.


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