Agriculture Commons^™

Effect Of Increasing Levels Of Monosilicic Acid On Arsenic And Phosphorus Sorption In Soil, Flávia Bastos Agostinho

LSU Doctoral Dissertations

Arsenic (As) accumulation in rice (Oryza sativa) grains has increased human’s daily intake. Studies have shown that arsenite is taken up through known silicon (Si) transporters in rice. Moreover, the availability of As in soil is affected by chemically similar ligands that have high affinity to oxides surfaces, such as Si and phosphorus (P). Studies were conducted to: (I) investigate the role of elevated levels of Si on the concentration of different As fractions in soil and on As uptake by rice; (II) evaluate the effect of increasing monosilicic acidconcentrations on As sorption and kinetics in soil; and …

Rapid Regeneration Offsets Losses From Warming-Induced Tree Mortality In An Aspen-Dominated Broad-Leaved Forest In Northern China, Pengwu Zhao, Chongyang Xu, Mei Zhou, Bo Zhang, Peng Ge, Nan Zeng, Hongyan Liu

Aspen Bibliography

Worldwide tree mortality as induced by climate change presents a challenge to forest managers. To successfully manage vulnerable forests requires the capacity of regeneration to compensate for losses from tree mortality. We observed rapid regeneration and the growth release of young trees after warming-induced mortality in a David aspen-dominated (Populus davidiana) broad-leaved forest in Inner Mongolia, China, as based on individual tree measurements taken in 2012 and 2015 from a 6-ha permanent plot. Warming and drought stress killed large trees 10–15 m tall with a total number of 2881 trees during 2011–2012, and also thinned the upper crowns. …

Effects Of Application Timing And Soil Type On Optimal N Rate Requirement Of Sugarcane (Saccharum Spp.) And Changes In Soil Inorganic And Leaf N Concentrations, Joseph Martin Garrett

LSU Master's Theses

Research is limited on the effects of soil types and early nitrogen (N) fertilizer applications to N management strategies in sugarcane (Saccharum spp.) production in Louisiana. This study was established in 2015 at two locations in St. Gabriel, LA to 1) determine the effect of fertilizer application timing and soil type on the optimal N rate requirement and yield of sugarcane and 2) relate the relationship of soil and leaf N content to yield at different growth stages with sugarcane yield. Treatments were set in a randomized block design on a clay soil and in a complete randomized …

Soil Responses To 48 Years Of Continuous No Till And Conventional Till Corn In Central Kentucky, Usa, Emily Cook

Scholars Week

Cropping systems, fertilizer applications and tillage practices influence soil physical and chemical characteristics. In this study, the impact of long-term conventional and no-tillage systems on selected soil properties were evaluated in a continuous corn system on a Maury silt loam soil. This field for the study is located on the University of Kentucky's Research Farm (Spindletop Farm). The field was tilled in 1969 from bluegrass sod and the first year's data was in 1970. Each plot is 20 ft. by 40 ft. and for many years each plot was split with winter cover crop planted to rye or hairy vetch. …

Weather And Climate Summary And Forecast: April 2018 Report, Gregory V. Jones

Linfield University Wine Studies Reports

This report provides a summary of the weather and climate forecast for April 2018. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.

Complexity And Efficiency In Conservation Auctions: Evidence From A Laboratory Experiment, Simanti Banerjee, Marc Conte

Cornhusker Economics

Payment-for-ecosystem-services (PES) schemes financially compensate producers for implementing various conservation practices on their properties that generate ecosystem-service benefits for society. Conservation auctions have been adopted in several PES programs such as the Conservation Reserve Program (CRP) (Hellerstein et al., 2015) and involve producers submitting bids for one or more environmental practices for consideration in the auction.

Effects Of Enhanced Efficiency Nitrogen Fertilizers On Agronomic Parameters And Loss Pathways In The Subtropical Mississippi Delta Region, Scott Michael Pensky

LSU Master's Theses

Minimizing nitrogen (N) loss is critical for improving N use efficiency (NUE) in crop production and reducing its effects on the environment. Management practices such as seasonal application timing of N fertilizers and the addition of enhanced efficiency N fertilizers (EENFs) were investigated for the high N requirement of the two most common cereal crops globally, corn (Zea mays L.) and wheat (Triticum aestivum L.), in the subtropical climate of Louisiana. Field research was established during the 2016 and 2017 seasons at the LSU Agricultural Center’s Dean Lee and Central research stations to examine the effect of different EENFs and …

Evaluation Of Controlled-Release Nitrogen And Potassium Fertilizer In Louisiana Sugarcane Production, Samuel Kwakye

LSU Master's Theses

Sugarcane (Saccharum spp) production is an integral part of Louisiana's economy. Proper fertilizer management, particularly nitrogen (N) and potassium (K), optimizes sugarcane production. An experiment was established in 2015 at the LSU AgCenter Sugar Research Station in St. Gabriel, Louisiana to: (1) assess the effect of N and K fertilizer sources on sugarcane yield and quality parameters, and (2) monitor the changes in inorganic N and K levels in the soil at different sugarcane growth stages. The experiment was arranged in a randomized complete block design on a Sharkey clay soil and complete randomized design on a Commerce …

Changes In Carbon, Nutrient, And Trace Metal Concentrations During The Transition From Freshwater To Marine Environments - A Case Study In Southwest Louisiana, Songjie He

LSU Doctoral Dissertations

Rivers carry terrestrial nutrients and other materials to estuaries, affecting biogeochemical cycles and ecosystems in coastal margins. This dissertation research incorporated five studies to investigate the dynamics of carbon, nutrients, and trace metals in four major coastal rivers in southwest Louisiana – the Sabine, Calcasieu, Mermentau, and Vermilion Rivers. The overarching goal of this research was to broaden the knowledge and understanding of biogeochemical processes in freshwater – saltwater mixing zones. These studies employed decade-long monitoring records of water chemistry, utilized monthly field measurements conducted over a two-year period, and used analysis of over 200 water samples for carbon, nitrogen, …

Solar Energy On Farmland, Eden Martin

Student Policy Briefs

The large-scale use of agriculture and land alteration has caused the concentrations of greenhouse gases in our atmosphere to rise in the last 250 years (Janke, 2010). The majority of greenhouse gas emissions is caused by the burning of fossil fuels. Fossil fuels are a threat when it comes to the health of our planet but they are also abundant and affordable (Janke, 2010). This threat has caused many to start exploring the use of alternative energy sources that are renewable; solar technology, wind power, geothermal, and ocean energy (Janke, 2010). According to Rebecca Hernandez, “solar energy has one of …

Maine's State Policy For Solar Farms On Agricultural Land., Elliot James Lee

Student Policy Briefs

A change is coming to the Northeast, and Maine is not prepared to handle it. Across the Northeast, agricultural land is being converted to solar farms, with no policy in place to handle it. Opening Maine up to numerous problems with, permitting, regulations, taxes, best management practices, size of these farms, and lack of infrastructure to name a few. All of which need to be addressed, while dealing with the general instability of policies surrounding green energy and green technology like solar panels. This change is coming quickly, and although we need this policy soon, it cannot be rushed, or …

Solar Energy On The Farm, Kate Mccarty

Student Policy Briefs

Solar energy production accounts for less than one percent of energy produced in Maine, but nonetheless, the number of agricultural solar projects in the state is growing (ix, xi). While Maine currently lacks policies that encourage solar installations, such as tax credits and rebates, the next state administration could implement such policies, further resulting in an increase in the number of solar projects. The installation of commercial-scale solar projects is particularly attractive to farmers as it offers diversified income that protects against the unpredictable nature of farming. The Maine Legislature should consider adopting policies around the use of large-scale solar …

Solar Farms On Agricultural Land, Rebecca Pratt

Student Policy Briefs

With farmers today facing economic hardship, many are looking for alternative sources of income. A recent trend has farmers considering turning their agriculture fields into solar farms. While there is a global push for more renewal energy, using agricultural lands to accomplish this goal is being widely debated. The opposition argues that the solar farms may come with unintended consequences including economic, environmental and even social problems (Tromans and Jackson, 2015). One of the most pressing questions is who, if anyone, should regulate the development of solar farms. Currently, there is no legislation in Maine regulating the installation of solar …

Solar Farms & Agriculture – Mutually Beneficial Or Problematic?, Catherine Darragh

Student Policy Briefs

Solar Farming has become increasingly adopted by farmers to diversify their income. This has raised concerns regarding the loss of agricultural land, impact on the environment, and application of policies to land that may have shifted from an agricultural to energy production focus. The following brief examines the benefits and disadvantages of solar farming for farmers and the environment and how new policies might affect the situation.

Maine Farmland: Sprouting Solar Crops Needs Policy, Allison Berguin

Student Policy Briefs

Maine farmland is undergoing changes brought upon by an aging population, by a growing trend in small farming, and by keen interest in protecting balance in the ecosystem of farmland soils for future generations. Farming the sun as a solar crop has entered into this dynamic matrix where land stewardship, food security, and conservation goals overlap (Hernandez, Hoffacker, Murphy-Mariscal, Wu, Allen, 2016). Is farming a solar crop compatible with the current ecological and economic landscape? As solar farming continues, is a state policy needed to manage the variables associated with solar crops on agricultural land? The aim of this paper …

Ua12/2/2 2018 Talisman: Grit, Wku Student Affairs

WKU Administration Documents

2018 Talisman yearbook.

• Gibson, Helen. Grit
• Zambrano, Max. Cash Cows – Chaney’s Dairy Barn
• Holt, Delaney. A Quarry Story – White Stone Quarry, Caden Quarry
• McKee, Rylee. Beautiful Grit – BellaMoxi, Dance
• Voorhees, Jessica. Digging Deep – Jean-Luc Houle, Anthropology
• Lucas, Kaley. Black Mountain
• Edwards, Aly. Roots of Stigma – McKenna Vierstra, Jordan Frodge, Max Williams, Robin Farrell
• Eastham, Lillie. Grab ‘Em by the Ballot – Time’s Up Movement
• McCarthy, Hannah. Flesh Memories
• Barritt, Brooklyn. Making a Place at the Table – Dungeons & Dragons
• Gary, Summer. For Adoption: Unwanted Mutt
• Waters, Adrianna. For the Love of Creation – Art …

Nebline, April 2018

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: Can You Pass This Food Safety Quiz?

Food & Health

Farm & Acreage

Pests & Wildlife

Horticulture

Early Childhood

4-H & Youth

and other extension news and events

Special Pullout Section: Weed Awareness

Farmers For America Documentary Screening, Tiffany Jane Thompson

Agricultural Education and Communication

The agriculture industry is seeing a decrease in the number of beginning farms, operations that have been in existence for 10 years or less, across the United States. According to the most current Census of Agriculture by the United States Department of Agriculture (USDA), beginning farms make up approximately a quarter of the 2.1 million total farms across the country. This is a 20 percent drop between the 2007 and the 2012 censuses (2012 Census Highlights, Beginning Farmers, 2017). At the same time, the average age of the U.S. farmer is increasing and is now at 58 (Williamson, J. & …

Effects Of Nitrogen Fertilizer Rate, Timing, And Herbicide Use On Industrial Hemp (Cannabis Sativa), Robert David Anderson

Masters Theses & Specialist Projects

Industrial hemp (Cannabis sativa) is an old crop being reintroduced into certain states; thus, very little information is known about growing the crop domestically. Two field experiments were established in Bowling Green, KY to evaluate various nitrogen fertilizer rates and timing applications to examine the effects on growth and yield of industrial hemp (Cannabis sativa). Each experiment was sprayed with 1.12 a.i. ha-1 pendimethalin on half of each plot as a pre – emergent herbicide. Hemp was planted at a rate of 43 kg/ ha into a conventionally tilled silt loam soil. Nitrogen rates studied were a control, 79, 157, …

Solar Farming In Maine: An Objective Overview, Carmen Demartis

Student Policy Briefs

The US Energy Information Administration predicts that there will be 28% more energy use globally by the year 2040 (1). Coupled with this, is an increase in awareness of the negative effects of greenhouse gas emissions on the environment. These two facts are among the main drivers behind the heightened interest and investment in renewable energy sources. Solar energy, with carbon emissions estimated as 43 times less than natural gas (2), is a particularly attractive source of renewable energy.

Maine has the distinction of being both one of the highest per capita consumers of fossil fuels in the nation (3), …