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Management And Control Plan For Zinfandel Vines In South Paso Robles, Ca., Tanner E. Campbell 2010 Cal Poly State University

Management And Control Plan For Zinfandel Vines In South Paso Robles, Ca., Tanner E. Campbell

Earth and Soil Sciences

Zinfandel, also known as Zin, is a red skinned variety of wine grape very popular in California. The wines produced from Zinfandel grapes have an intense fruitiness and luscious texture. Production is extremely variable throughout California and is dependent upon, climate, soil fertility, crop level management practices, and irrigation. This study was conducted to determine the on site soil physical and chemical properties as a means to obtain optimal yields and fruit quality. The A & L Western Agriculture Laboratories performed comprehensive fertility analysis to determine the concentrations of the plant essential nutrients, organic matter, electrical conductivity, cation exchange capacity, and ...


Effects Of Recycled Water On Landscape Plants, Casey R. Miranda 2010 California Polytechnic State University - San Luis Obispo

Effects Of Recycled Water On Landscape Plants, Casey R. Miranda

Master's Theses and Project Reports

ABSTRACT EFFECTS OF RECYCLED WATER ON LANDSCAPE PLANTS Casey Ray Miranda Recycled water is water that has been previously used, has suffered a loss of quality, and has been properly treated for redistribution (Wu et al. 2001). The use of recycled water as an alternative to fresh water in the landscape can have positive and negative effects. Experimentation on 40 different plant species during a 32 week period (2 phases of 16 weeks), was conducted to analyze the effects of recycled water irrigation on the appearance of landscape plants. Each species of plant was planted into 10 individual number 2 ...


Remediation Of Soil Hydrophobicity On A Coastal Usga Sand-Based Golf Green, Troy David Thompson 2010 California Polytechnic State University-San Luis Obispo

Remediation Of Soil Hydrophobicity On A Coastal Usga Sand-Based Golf Green, Troy David Thompson

Master's Theses and Project Reports

Managing soil hydrophobicity caused by localized dry spots (LDS) on sand based golf greens has become one of the greatest challenges for golf course superintendents and managers, especially as water restrictions intensify. The purpose of this study was to evaluate the effectiveness of thirteen soil surfactants in eliminating LDS and in maximizing root zone soil moisture on a sand based USGA golf green located on the California Central Coast. Potential water repellency of air dried cores (measured utilizing the water droplet penetration time (WDPT) method), phytotoxicity, and climate were analyzed during two experimental trials. Phytotoxicity data was collected for Trial ...


Relationship Of Nitrogen Conversion In Soil To N Loss, John E. Sawyer 2010 Iowa State University

Relationship Of Nitrogen Conversion In Soil To N Loss, John E. Sawyer

Integrated Crop Management News

If applied N or mineralized organic matter N (conversion from organic to ammonium) would stay in the ammonium (NH4+) form, then losses would not occur because ammonium attaches to soil and does not leach (move through the soil with water) or denitrify (microbial conversion to N gases when soils become saturated). Unfortunately, that isn’t the way it works. Ammonium is converted to nitrate (NO3-) via nitrification. Nitrate is the form that can be moved out of the soil profile by leaching or lost by denitrification. The conversion of ammonium to nitrate and the conversion of nitrate to N gases ...


Wet Soil Conditions And Nitrogen Loss, John E. Sawyer 2010 Iowa State University

Wet Soil Conditions And Nitrogen Loss, John E. Sawyer

Integrated Crop Management News

South and southeast Iowa have experienced much above normal precipitation and continued wet soils early this spring. See the figures below for the precipitation and departure from normal for the April 18-May 17, 2010 period. What does this mean for nitrogen (N) loss, and is this a repeat of the last two years for that area of Iowa? While it has been wet, it has also been cooler than normal (see figure below). That is important because cool temperatures slow nitrification and denitrification, both biological processes important for potential N loss. While the wet period does not bode well for ...


Phyllosilicate Mineralogy, 40ar/39ar Geochronology, And Genesis Of Petrocalcic Soils In The Southwest U.S.A., Colin R. Robins 2010 University of Nevada Las Vegas

Phyllosilicate Mineralogy, 40ar/39ar Geochronology, And Genesis Of Petrocalcic Soils In The Southwest U.S.A., Colin R. Robins

UNLV Theses, Dissertations, Professional Papers, and Capstones

Obtaining isotope ages for arid soils and paleosols, including carbonate-cemented (calcic and petrocalcic) horizons, constitutes a significant challenge for soil scientists, geomorphologists, and stratigraphers. Carbonate-cemented soils foster diverse suites of authigenic minerals with exciting potential for geochronology, however, this potential has not been realized. This dissertation describes the timing of pedogenic palygorskite and sepiolite crystallization in extremely old, extant petrocalcic soils of the southwest U.S.A., and assumes that these fibrous, high-magnesium phyllosilicates contain sufficient lattice-bound K to warrant vacuum-encapsulated 40Ar/39Ar geochronology. This three-part study evaluated the (1) selective extraction, (2) 40Ar/39Ar analysis, and (3) pedogenesis of ...


Random Forests Applied As A Soil Spatial Predictive Model In Arid Utah, Alexander Knell Stum 2010 Utah State University

Random Forests Applied As A Soil Spatial Predictive Model In Arid Utah, Alexander Knell Stum

All Graduate Theses and Dissertations

Initial soil surveys are incomplete for large tracts of public land in the western USA. Digital soil mapping offers a quantitative approach as an alternative to traditional soil mapping. I sought to predict soil classes across an arid to semiarid watershed of western Utah by applying random forests (RF) and using environmental covariates derived from Landsat 7 Enhanced Thematic Mapper Plus (ETM+) and digital elevation models (DEM). Random forests are similar to classification and regression trees (CART). However, RF is doubly random. Many (e.g., 500) weak trees are grown (trained) independently because each tree is trained with a new ...


Reproducibility Of Soil Moisture Ensembles When Representing Soil Parameter Uncertainty Using A Latin Hypercube–Based Approach With Correlation Control, Alejandro N. Flores, Dara Entekhabi, Rafael L. Bras 2010 Boise State University

Reproducibility Of Soil Moisture Ensembles When Representing Soil Parameter Uncertainty Using A Latin Hypercube–Based Approach With Correlation Control, Alejandro N. Flores, Dara Entekhabi, Rafael L. Bras

Alejandro N. Flores

Representation of model input uncertainty is critical in ensemble-based data assimilation. Monte Carlo sampling of model inputs produces uncertainty in the hydrologic state through the model dynamics. Small Monte Carlo ensemble sizes are desirable because of model complexity and dimensionality but potentially lead to sampling errors and correspondingly poor representation of probabilistic structure of the hydrologic state. We compare two techniques to sample soil hydraulic and thermal properties (SHTPs): (1) Latin Hypercube (LH) based sampling with correlation control and (2) random sampling from SHTP marginal distributions. A hydrology model is used to project SHTP uncertainty onto the soil moisture state ...


How And Why To Avoid Soil Compaction, Mahdi Al-Kaisi 2010 Iowa State University

How And Why To Avoid Soil Compaction, Mahdi Al-Kaisi

Integrated Crop Management News

This spring most Iowa soils have plenty of moisture in the profile and in some areas may exceed field capacity, causing many producers to enter fields at less-than-ideal soil conditions. High soil moisture increases soil compaction caused by field traffic and machinery. Over the past decade the size of Iowa farms has increased, leading to larger and heavier equipment. However, equipment size is only one factor among many causes of the soil compaction problem.


Monitor Soil Moisture This Spring, Mahdi Al-Kaisi 2010 Iowa State University

Monitor Soil Moisture This Spring, Mahdi Al-Kaisi

Integrated Crop Management News

Current wet soil conditions present challenges to early season fieldwork. Whether it is planting beans or corn, cultivating or rotary hoeing – there is high potential to cause significant soil structure damage. Make a risk assessment before rushing out to the field on the first few days of dry weather to work the ground. When soil moisture is at or exceeds field capacity, there is an increased potential for soil compaction, particularly at topsoil depths.


Suspended Sediment Transport Dynamics And Sediment Yields In Relation To Watershed Characteristics, Upper Green River Basin, Kentucky, James Nii Aboh Otoo 2010 Western Kentucky University

Suspended Sediment Transport Dynamics And Sediment Yields In Relation To Watershed Characteristics, Upper Green River Basin, Kentucky, James Nii Aboh Otoo

Masters Theses & Specialist Projects

Sediment delivery is a major problem in the Green River, Kentucky, home of 71 of the state’s 103 known mussel species and 151 fish species. The river also provides water for many of its surrounding counties. This research focuses on how suspended sediment loads, grain size, and sediment concentration during runoff events are related to watershed characteristics.

The research characterized suspended sediment loads, grain size, and sediment concentration during runoff events and how they were related to watershed characteristics such as hydro-climatic regime, watershed size, geology and soils, topography and landuse conditions and land cover conditions. The study focused ...


Distribution Of Dioecious Eastern Red Cedar (Juniperus Virginiana) Along An Environmental Gradient In Ogallala, Ne., Taylor Sloey 2010 University of Nebraska at Lincoln

Distribution Of Dioecious Eastern Red Cedar (Juniperus Virginiana) Along An Environmental Gradient In Ogallala, Ne., Taylor Sloey

Environmental Studies Undergraduate Student Theses

Abstract

The purpose of this research was to study the sex distribution and energy allocation of dioecious Eastern Red Cedars (Juniperus virginiana) along an environmental resource gradient. The trees surveyed were growing in a canyon located at the University of Nebraska’s Cedar Point Biological Research Station in Ogallala, Nebraska. Due to the geography of this canyon, environmental factors necessary for plant growth should vary depending on the tree’s location within the canyon. These factors include water availability, sun exposure, ground slope, and soil nitrogen content, all of which are necessary for carbon acquisition.

Juniperus virginiana is a dioecious ...


The Impact Of Community Consultation To Set Resource Condition Targets For Dryland Salinity, Rebecca Heath, Susan Murphy-White, Jamie Bowyer 2010 Department of Agriculture and Food, Western Australia

The Impact Of Community Consultation To Set Resource Condition Targets For Dryland Salinity, Rebecca Heath, Susan Murphy-White, Jamie Bowyer

Resource management technical reports

No abstract provided.


Photo Highlights Of The 30th Kentucky Alfalfa Conference, Kentucky Alfalfa Conference 2010 University of Kentucky

Photo Highlights Of The 30th Kentucky Alfalfa Conference, Kentucky Alfalfa Conference

Kentucky Alfalfa Conference

No abstract provided.


How We Produce & Market Alfalfa Hay, Clayton Geralds 2010 Geralds Farms

How We Produce & Market Alfalfa Hay, Clayton Geralds

Kentucky Alfalfa Conference

No abstract provided.


Growing Alfalfa For Wildlife, Don Ball 2010 Auburn University

Growing Alfalfa For Wildlife, Don Ball

Kentucky Alfalfa Conference

Alfalfa has long been recognized as a superb forage crop, which is why it is widely grown for dairy cattle, horses, sheep, and many other types of domesticated forage-consuming animals. Reasons for its popularity include wide adaptation, excellent nutritive value, good yield potential, perennial growth habit, a long growing season, and the fact that (in association with Rhizobium bacteria) it is a nitrogen-fixing legume that does not require periodic applications of nitrogen fertilizer.


Alfalfa Varieties For The Future, Joe Bouton 2010 The Samuel Roberts Noble Foundation

Alfalfa Varieties For The Future, Joe Bouton

Kentucky Alfalfa Conference

When breeding tomorrow’s alfalfa varieties, most groups employ a model of combining traditional plant breeding with biotechnology tools in order to incorporate useful traits. In this model, the conventional variety development process will be the method of choice for most traits where breeders have traditionally made progress such as adaptation, heading date, disease and insect resistance, general persistence conditions such as grazing and traffic tolerance, and even yield. It has been very successful in adding economic value to the forage and livestock operations of many producers (Bouton 2007). These traditionally developed varieties will also be used as the germplasm ...


Do's And Don'ts In Grazing Alfalfa, Ken Johnson 2010 University of Kentucky

Do's And Don'ts In Grazing Alfalfa, Ken Johnson

Kentucky Alfalfa Conference

I want to discuss some of the issues in a talk I presented nearly twenty years ago. At that point we had been grazing Alfalfa about eight years and made some general remarks about the concerns I had at the time. I will look at these as presented then and how the thoughts may have changed.


Is There A Benefit To Alfalfa Balage?, Gary Bates 2010 University of Tennessee

Is There A Benefit To Alfalfa Balage?, Gary Bates

Kentucky Alfalfa Conference

Making hay in the mid-South has always been a difficult process. High humidity and rainfall often make drying a long, tedious, if not impossible proposition. Over the last few years there has been an increased interest in making round bale silage, or balage, from forage crops. Fermenting alfalfa for storage has several advantages and disadvantages over regular haymaking systems.


Alfalfa Hay For Horses, Robert Coleman 2010 University of Kentucky

Alfalfa Hay For Horses, Robert Coleman

Kentucky Alfalfa Conference

When horse owners consider hay for their animals, a number of criteria are generally considered. Of major importance is the hay must be free of mold and dust. It needs to contain nutrients needed by the horse and it must be palatable. If these criteria are met, the type of hay should not matter. However, that is not the case with many horse owners. When discussing the selection of hay, many owners first consider the type of hay. Can it be alfalfa or should it be a grass or how about a mix of grass and a legume. If a ...


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