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Horticulture

2022

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Articles 211 - 214 of 214

Full-Text Articles in Life Sciences

Simulation Of Nitrous Oxide Emissions In Zoysia Turfgrass Using Daycent And Dndc Ecosystem Models, Mu Hong, Yao Zhang, Ross Braun, Dale J. Bremer Jan 2022

Simulation Of Nitrous Oxide Emissions In Zoysia Turfgrass Using Daycent And Dndc Ecosystem Models, Mu Hong, Yao Zhang, Ross Braun, Dale J. Bremer

Kansas Agricultural Experiment Station Research Reports

Nitrous oxide (N2O) is an important greenhouse gas (GHG) implicated in global climate change. Process-based ecosystem models, such as DAYCENT and DNDC, have been widely used to predict GHG fluxes in agricultural systems. However, neither model has yet been applied to warm-season turfgrasses such as zoysiagrass. This study parameterized, calibrated, and validated the DAYCENT and DNDC models for N2O emissions from Meyer zoysiagrass (Zoysia japonicaSteud.) using Bayes’ theorem and field data from Braun and Bremer (2018a, 2019) and Lewis and Bremer (2013). Results indicated DAYCENT, but not DNDC, reasonably simulated the impacts of irrigation …


Characterization Of Salt And Drought Tolerance In Sunflower (Helianthus Annuus L.), Sevgi Saylak Jan 2022

Characterization Of Salt And Drought Tolerance In Sunflower (Helianthus Annuus L.), Sevgi Saylak

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Consequent to the increasing world population, food sources are needed to be increased to meet the nutritional needs. However, due to natural processes and agricultural activities, the most destructive environmental factors that limit crop production, soil salinity, and drought-exposed areas are growing. As one of the major oilseed crops, sunflower (Helianthus annuus L.), is considered to be moderately tolerant to salt and drought. Although it can grow in arid to semi-arid regions, increasing salinity and drought might adversely affect sunflower production. This study aimed to investigate several sunflower germplasms' morphological responses to salt and drought stresses. For this purpose, …


Establishing Seeded Tall Fescue With Covers And Drip Irrigation Methods, Alex P. Bach, Dale J. Bremer, Cathie C. Lavis, Steven J. Keeley, Mu Hong Jan 2022

Establishing Seeded Tall Fescue With Covers And Drip Irrigation Methods, Alex P. Bach, Dale J. Bremer, Cathie C. Lavis, Steven J. Keeley, Mu Hong

Kansas Agricultural Experiment Station Research Reports

The use of covers may improve establishment of seeded turfgrass but their use in combination with drip irrigation techniques has not been evaluated. We investigated the effects of two cover types and three irrigation methods on establishment of seeded tall fescue turfgrass. For spring seeding of tall fescue[Schedonorus arundinaceus(Schreb.) Dumort.], turf establishment was successful with subsurface drip irrigation (SDI) and aboveground drip irrigation (AGD) in fine textured soil in the transition zone. With SDI, AGD, or sprinkler irrigation, both polyester mesh (Poly) and straw blanket (Straw) covers improved turf establishment in the order of Poly>Straw>No Cover, …


Documenting The Rapidly Expanding Distribution Of Invasive Ravenna Grass (Tripidium Ravennae) Eastern In Kansas, Rachel A. Styers Jan 2022

Documenting The Rapidly Expanding Distribution Of Invasive Ravenna Grass (Tripidium Ravennae) Eastern In Kansas, Rachel A. Styers

Electronic Theses & Dissertations

Invasive species cause significant ecological losses in the United States where they cost approximately $21 billion dollars a year to manage (Fantle-Lepczyk et al., 2022). Early detection of new invasive species, coupled with a rapid response of management efforts, can help to slow the ecological and economic impacts caused by these habitat invaders. Tripidium ravennae (L.) H. Scholz (or Ravenna grass) is a tall, robust, cespitose grass known to occur in Kansas, although its distribution remained poorly documented prior to this study. Given its known invasive tendencies, it has been declared noxious in at least six US states. Coupled with …