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Full-Text Articles in Life Sciences

Decision Support Tools To Address Climate Change: Climate Model - Land Surface Models, Zea Mays L. (Corn) Phenology And Evapotranspiration-Yield Sensitivity Models For Nebraska, Usa., Jane A. Okalebo Dec 2014

Decision Support Tools To Address Climate Change: Climate Model - Land Surface Models, Zea Mays L. (Corn) Phenology And Evapotranspiration-Yield Sensitivity Models For Nebraska, Usa., Jane A. Okalebo

Dissertations & Theses in Natural Resources

Nebraska's climate is highly variable and is expected to change in the future with anthropogenic global warming (AGW), resulting in warmer spring and summer temperatures coupled with more erratic rainfall events. This has strong implications for agriculture in the region, yet it is not clear that current modeling and decision-support tools are adequate to address these looming changes and provide planning, mitigation and adaptation strategies. To address climate change and its implications to agriculture in Nebraska, a set of robust decision support tools are very crucial. This study herein are divided into three chapters, with each chapter addressing a ...


Irrigation Tips To Conserve Water And Grow A Healthy Lawn, Gregg Munshaw, Brad Lee Nov 2014

Irrigation Tips To Conserve Water And Grow A Healthy Lawn, Gregg Munshaw, Brad Lee

Agriculture and Natural Resources Publications

Turfgrasses are composed of thousands of cells, all containing water, in which metabolic processes such as photosynthesis and respiration take place. Water makes up 80 to 90 percent of the total plant mass. If this level drops below 60 percent, these processes may slow and wilting will occur. Water is critically important for:

  • Maintaining turgidity, which keeps plants standing upright
  • Transporting nutrients and sugars through the plant
  • Chemical reactions
  • Transpirational cooling when water moves out of the leaves and evaporates


Liming Kentucky Lawns, Gregg Munshaw, Edwin L. Ritchey Jul 2014

Liming Kentucky Lawns, Gregg Munshaw, Edwin L. Ritchey

Agriculture and Natural Resources Publications

Most homeowners desire an aesthetically pleasing landscape and will take steps to ensure success. Proper fertilizing, watering, and pest control are all steps that will lead to a quality lawn. However, some confusion surrounds when and why lime should be applied to a lawn. Many homeowners believe that lime needs to be applied on an annual basis for a quality lawn. The purpose of this publication is to explain why lime is needed and whether it is required on your lawn.


How Dry Seasons Affect Woody Plants, Nicole Ward Gauthier, Susan Fox, Kathy Wimberley Jul 2014

How Dry Seasons Affect Woody Plants, Nicole Ward Gauthier, Susan Fox, Kathy Wimberley

Agriculture and Natural Resources Publications

Pattern, frequency, and amounts of rainfall are important components to plant health. Water is an essential plant component, making up 70 percent to 90 percent of plant mass. Growth, photosynthesis (manufacture of food), nutrient transport, important chemical reactions, and the production of secondary metabolites are all dependent upon water uptake from roots. Water expands and enlarges new cells within stems and leaves, which holds them upright (turgor pressure).

During dry seasons and drought conditions, plants become stressed (Figure 1). Growth ceases, nutrient transport slows, and plants wilt as cells become water-deficient. Severe, long-term, or consecutive drought events may cause permanent ...


Development Of A Public Education Website: Building Bridges Over Water, Angelina Mckee Jul 2014

Development Of A Public Education Website: Building Bridges Over Water, Angelina Mckee

Agricultural Education and Communication

Website created by Angelina McKee to educate the public about water resource issues. Water is the basic unit of life, water resources are the basis for what societies and ecosystems are founded upon. Water shortages and droughts are more prevalent in our ever-changing world. It is no shock that there are discrepancies between various stockholders on either sides of the dry riverbed. This senior project resulted in the development of a website that addresses global water resources, water use in California, water conservation, and water allocation. The website informs the public on water resources and related issues and will hopefully ...


Water Water Everywhere: Analyzing Long Island's Water Issues And Finding Solutions For A Sustainable Future, Anthony T. Becker May 2014

Water Water Everywhere: Analyzing Long Island's Water Issues And Finding Solutions For A Sustainable Future, Anthony T. Becker

2014 Student Theses

Over three million people call Long Island their home. With access to beautiful landscapes, world-renowned beaches, and proximity to New York City, it is no wonder that so many proudly call this geographic stretch of glacial till their home. However, throughout the years our actions do not necessarily reflect this affection we have to our home. Years of sprawl and human infestation across the island have resulted in widespread environmental degradation. Specifically, the water we drink and the beaches we enjoy have become endangered. I plan on studying the urban ecology of how intensified population growth led to the eutrophication ...


Agriculture, Environmental Restoration And Ecosystem Services: Assessing The Costs Of Water Storage On Agricultural Lands In South Florida, Kayla Ouellette Mar 2014

Agriculture, Environmental Restoration And Ecosystem Services: Assessing The Costs Of Water Storage On Agricultural Lands In South Florida, Kayla Ouellette

Graduate Theses and Dissertations

A large part of the environmental restoration required by the Comprehensive Everglades Restoration Plan calls for more water-storage on lands south of Lake Okeechobee in order to restore the natural water flows of the Everglades watershed. The Everglades Agricultural Area (EAA) can be used for increased water storage in order to relieve coastal estuaries of excess water in the rainy season. This water storage can deliver additional ecosystem services of soil retention and reduced CO2 emissions that could compensate farmers for the cost of water storage by increasing long term farm profitability. The goals of this study were 1) to ...


Understanding Irrigation Water Test Results And Their Implications On Nursery And Greenhouse Crop Management, Dewayne L. Ingram Feb 2014

Understanding Irrigation Water Test Results And Their Implications On Nursery And Greenhouse Crop Management, Dewayne L. Ingram

Agriculture and Natural Resources Publications

Water quality can have a huge impact on plant growth, especially in soilless plant production systems. Water is certainly one of the most critical inputs in nursery and greenhouse crop production. Such production systems are extremely diverse but are most commonly characterized as container production, raised-bed production or hydroponics. Soilless systems require intensive management of water and nutrients for optimal plant growth and production. Irrigation water quality impacts nutrient levels and availability as well as other chemical characteristics of the soilless growth substrate; therefore it is critical to characterize the irrigation water source before starting a crop and possibly even ...