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Soil Biology And The Emergence Of Adventive Grassland Ecosystems, T. R. Seastedt 2022 University of Colorado, Boulder

Soil Biology And The Emergence Of Adventive Grassland Ecosystems, T. R. Seastedt

International Grassland Congress Proceedings

The last few years have seen an explosion of information on the responses and feedbacks of soil biota to species and environmental changes. Soil biologists, plant ecologists, and biogeochemists have been searching for patterns, generality and predictability in these relationships. A few brave souls have had the courage to assemble comprehensive assessments of soil biology in our rapidly changing world. Several years ago, I reviewed Wardle’s (2002) book emphasising the links between above- and belowground components of ecosystems. That activity – as well as the present one – provided me with the opportunity to survey recent findings in soil biology. …


Paying For Our Keep: Grasslands Decision Support In More-Developed Countries, Andrew D. Moore 2022 CSIRO Plant Industry, Australia

Paying For Our Keep: Grasslands Decision Support In More-Developed Countries, Andrew D. Moore

International Grassland Congress Proceedings

“Models in grassland science have come to stay, and so they must be made to pay for their keep. To do that, it will be necessary to improve their scientific sophistication and their management relevance...” (Seligman, 1993).

Decision support (DS) tools in grassland agriculture have also come to stay. This review will examine the ways and means by which DS tools are being made to pay for their keep, with a focus upon DS efforts from the last decade and on the lessons that arise for those who develop DS tools for grasslands. A survey of the present state of …


Decision Support For Grassland Systems In Developing Countries, P. K. Thornton 2022 ILRI, Kenya

Decision Support For Grassland Systems In Developing Countries, P. K. Thornton

International Grassland Congress Proceedings

Key points

1. Information flows in complex systems are often themselves highly complex, and decision support approaches based on linear input-output processes may have only limited impact.

2. How decisions are made, and how they can be appropriately supported, is often incompletely understood, in part because of inadequate understanding of the objectives and attitudes of all the decision makers involved.

3. Much of the developing world faces daunting problems in the coming 30 years, and appropriate information could play a critical role in dealing with these.

4. System complexity, household variability, and institutional intricacies have to be embraced rather than …


The Role Of Extended Grazing In Profitable Ruminant Livestock Operations, Jim Gerrish 2022 American GrazingLands Services LLC

The Role Of Extended Grazing In Profitable Ruminant Livestock Operations, Jim Gerrish

Kentucky Grazing Conference

No abstract provided.


Hay Feeding Strategies To Build Fertility In Grazing Systems, Nick Roy, Fred Thomas 2022 University of Kentucky

Hay Feeding Strategies To Build Fertility In Grazing Systems, Nick Roy, Fred Thomas

Kentucky Grazing Conference

No abstract provided.


Grazing Myths That Reduce Profitability, Greg Halich 2022 University of Kentucky

Grazing Myths That Reduce Profitability, Greg Halich

Kentucky Grazing Conference

No abstract provided.


Right Sizing Your Cows For Profit, Les Anderson 2022 University of Kentucky

Right Sizing Your Cows For Profit, Les Anderson

Kentucky Grazing Conference

No abstract provided.


My Soil Is Alive! Introduction To Soil Life And Its Role In Profitable Grazing Systems, Ray Archuleta 2022 Soil Science Society of America

My Soil Is Alive! Introduction To Soil Life And Its Role In Profitable Grazing Systems, Ray Archuleta

Kentucky Grazing Conference

No abstract provided.


Key Issues Generated From The Xi International Rangeland Congress 2021: Summary And Way Forward, D. L. Coppock, A. J. Ash, B. Irving 2022 Utah State University

Key Issues Generated From The Xi International Rangeland Congress 2021: Summary And Way Forward, D. L. Coppock, A. J. Ash, B. Irving

International Grassland Congress Proceedings

The important issues, knowledge gaps, and evolving research approaches for the global rangelands are summarised in this review of submissions to the Joint XXIV International Grasslands and XI International Rangelands Congress (IGC/IRC). In the big picture, it is concluded that stand-alone studies of livestock production are becoming rare compared to that of the past International Rangelands Congresses (IRC). Rather, added effort is now being directed at understanding the fuller context of social-ecological systems (SESs) on rangelands in a quest to improve the prospects for sustainable resource management as well as the enhancement of human welfare. Although climate change is upon …


Joint International Grassland And International Rangeland Congress Kenya 2021: Grasslands Summary, James L. Klotz, J. H. Bouton 2022 USDA Agricultural Research Service

Joint International Grassland And International Rangeland Congress Kenya 2021: Grasslands Summary, James L. Klotz, J. H. Bouton

International Grassland Congress Proceedings

This summary used as its main sources the plenary and keynote papers and talks in Sub-theme 2: Forage Production and Utilization and Sub-theme 3: Livestock Production Systems as well as a sampling of oral talks presented at the XXIV International Grassland Congress (IGC). This IGC was held virtually and jointly with the International Rangeland Congress and hosted in Nairobi, Kenya during 23-29 October 2021. The XXIV IGC was also the first to be held on the African continent in Congress' 94-year history. The summary is further focused on that information presented under the concept "cultivated grasslands" (e.g., a small number …


Vermicompost Versus Traditional Compost Amendments Leads To Different Soil Health Outcomes In A Mediterranean Vineyard, Elizabeth L. Luck 2022 California Polytechnic State University, San Luis Obispo

Vermicompost Versus Traditional Compost Amendments Leads To Different Soil Health Outcomes In A Mediterranean Vineyard, Elizabeth L. Luck

Master of Science in Environmental Sciences and Management Projects

Compost application has become a common practice in vineyard management to increase soil and crop health, however, the environmental externalities such as greenhouse gas emissions (GHG) from cropping systems that utilize organic fertilizers, such as compost, is uncertain. Vermicompost, which is compost created through the digestion of organic matter by earthworms, and its related ‘extract’ are commonly thought to provide more benefits for soil and crop health compared to standard compost. However, organic fertilizers such as vermicompost, vermicompost extract, and compost have not been compared in their effects on soil health in Mediterranean vineyards. In this two-year study, I assessed …


Using Stable-Isotopes To Determine The Effects Of Land-Use Change On Carbon Storage, Morgan Basile 2022 Western University

Using Stable-Isotopes To Determine The Effects Of Land-Use Change On Carbon Storage, Morgan Basile

Undergraduate Student Research Internships Conference

Over the last century, there has been drastic conversion of natural vegetation to agriculture. The decomposition of plant tissue is transformed into soil organic matter that is rich in carbon and stored within soil aggregates. This research examines the effects of land-use change on carbon storage by using stable-isotopes of organic matter. The stable-isotopes of organic matter within aggregates will be used to quantify the amount of carbon that has been added to the soil after a change in land-use (e.g. restoration of agricultural land to grassland).


Soil Salinity And Sodicity Of Galveston And Pelican Islands, Texas, Rachel Murray 2022 Stephen F. Austin State University

Soil Salinity And Sodicity Of Galveston And Pelican Islands, Texas, Rachel Murray

Electronic Theses and Dissertations

Galveston Island, Texas, is frequently affected by hurricanes. In 2008, Hurricane Ike inundated much of the island with seawater, causing elevated soil salinity levels that killed much of the vegetation on the island, including tens of thousands of trees. Residual salinity in soils and groundwater has hampered vegetation re-establishment in some areas.

This project aims to create a map product that displays the current soil salinity and sodicity levels on Galveston and Pelican Islands. The existing USDA Natural Resource Conservation Service (NRCS) Galveston County Soil Survey map units were used as a base for the project. ArcGIS Desktop software was …


Farmer Perspectives On Administrative Burdens And Potential Compensation Structures: A Short Summary Report Of Farmer Interviews From Spring 2022. Vermont Payment For Ecosystem Services Technical Research Report # 3c, Ellen Friedrich, Nour El-Naboulsi, Alissa C. White, Heather M. Darby 2022 The University of Vermont

Farmer Perspectives On Administrative Burdens And Potential Compensation Structures: A Short Summary Report Of Farmer Interviews From Spring 2022. Vermont Payment For Ecosystem Services Technical Research Report # 3c, Ellen Friedrich, Nour El-Naboulsi, Alissa C. White, Heather M. Darby

UVM Extension Faculty Publications

Interviews with 35 Vermont farmers explored their perspectives on compensation associated with a soil health payment for ecosystem services (PES) program in 2022. This report summarizes thematic analysis of those interviews. Farmers’ willingness to participate in a soil health PES is linked to both the burden of enrollment paperwork and the payment level, among other factors.

If deciding whether to participate in a soil health PES program, nearly all farmers said they would weigh the time and energy put into the administrative workload against the perceived benefits and value of the program, i.e., the payment level or technical assistance provided. …


Evaluation Of Factors That Contribute To Injury To Quizalofop-Resistant Rice From Quizalofop Applied Postemergence, Navdeep Godara 2022 University of Arkansas, Fayetteville

Evaluation Of Factors That Contribute To Injury To Quizalofop-Resistant Rice From Quizalofop Applied Postemergence, Navdeep Godara

Graduate Theses and Dissertations

Quizalofop-resistant rice technology allows for over-the-top applications of quizalofop, an acetyl-coenzyme A carboxylase-inhibiting herbicide. However, quizalofop caused significant injury to quizalofop-resistant rice in some Arkansas fields during the first year of commercialization. Experiments evaluated the effect of early-season soil moisture and nitrogen availability; pre-exposure to low rates of glyphosate and imazethapyr; planting date; and environmental conditions including, soil moisture content, air temperature, and light intensity on quizalofop-resistant rice tolerance to quizalofop applications. All experiments assessed sequential quizalofop applications made to 2-leaf followed by 5-leaf stage of rice. Sequential quizalofop applications alone and with surface irrigation or nitrogen application at the …


Investigations Of The Potential For Irrigated Agriculture On The Bonaparte Plains: Hydrogeology, Aquifer Properties And Groundwater Chemistry, Don Bennett, Paul Raper, Robert Paul, Tim Pope, Richard J. George Dr 2022 Department of Primary Industries and Regional Development, Western Australia

Investigations Of The Potential For Irrigated Agriculture On The Bonaparte Plains: Hydrogeology, Aquifer Properties And Groundwater Chemistry, Don Bennett, Paul Raper, Robert Paul, Tim Pope, Richard J. George Dr

Resource management technical reports

‘Cockatoo Sands’ is a common name for the Cockatoo Sands family of soils (comprising red to yellowish-red sands, sandy earths, and loamy earths) that have formed from quartz sandstone colluviums in relatively isolated patches throughout the East Kimberley region of Western Australia and the Northern Territory. Cockatoo Sands are recognised as potentially suitable for irrigated agriculture because they are generally well drained and not subject to waterlogging or inundation. These characteristics allow them to be cultivated and prepared for planting various crops during the wet and dry seasons of northern Australia.

Expanding agricultural production onto the Cockatoo Sands around Kununurra …


Urban Soil Chemical And Nutrient Management Issues Facing Emerging Small Grower Enterprises In Utah, Frank E. Oliver 2022 Utah State University

Urban Soil Chemical And Nutrient Management Issues Facing Emerging Small Grower Enterprises In Utah, Frank E. Oliver

All Graduate Theses and Dissertations

Knowledge of both soil quality and contamination has become increasingly important with the growth of urban agriculture in Utah and the United States as whole. Land is also a common limiting factor in urban agriculture, so it is important to maximize yield and net returns. In order to meet these demands, three studies were conducted across key urban agriculture sites along the Wasatch Front: 1) an urban soil survey to assess soil contamination, 2) an urban soil survey to evaluate macronutrient and salinity levels, and 3) a nitrogen fertilizer management trial for dahlia (Dahlia pinnata), a cut flower …


Manganese Geochemistry And Plant Availability In Response To Agricultural Practices, Ashleigh R. Montgomery 2022 University of Tennessee, Knoxville

Manganese Geochemistry And Plant Availability In Response To Agricultural Practices, Ashleigh R. Montgomery

Masters Theses

Manganese (Mn) is an essential micronutrient for all organisms. In soils, Mn forms determine availability to plants. Most Mn research has been conducted in forest ecosystems and Mn cycling in agricultural systems is understudied. Therefore, the objective of the experiment is to understand the effect of different agricultural management strategies on Mn cycling and plant availability. First, a greenhouse experiment was conducted to determine the effect of different application rates of two Mn fertilizers (MnSO4 and MnEDTA) on soil geochemical properties and growth of corn (Zea mays) and soybean (Glycine max). The fertilizers were applied to …


The Characterization Of Dynamic Soil Properties And Their Relation To Soil Organic Carbon In East Tennessee Soils, Shannon Marissa Newell 2022 University of Tennessee, Knoxville

The Characterization Of Dynamic Soil Properties And Their Relation To Soil Organic Carbon In East Tennessee Soils, Shannon Marissa Newell

Masters Theses

Quantifying how dynamic soil properties (DSPs) are affected by different management regimes is essential for understanding how these vital resources can be better managed. The Dewey soil series is a critical soil series in East Tennessee. For this study, the University of Tennessee, Knoxville (UTK) worked alongside the National Cooperative Soil Survey (NCSS) in an effort to better understand the dynamics of the Dewey soil series through a wide range of DSP data. To accomplish this, Dewey soil was collected from five sites which are considered representative of five management regimes: well-managed cropland (WMC), poorly-managed cropland (PMC), well-managed pasture (WMP), …


Geoenvironmental Implications On Food Sovereignty - Meskwaki Settlement, Tama County, Iowa, Lindsey Hubbell, Chad Heinzel Ph.D., Christina Blackcloud, Luke Kapayou, Avis Bear-Bass 2022 University of Northern Iowa

Geoenvironmental Implications On Food Sovereignty - Meskwaki Settlement, Tama County, Iowa, Lindsey Hubbell, Chad Heinzel Ph.D., Christina Blackcloud, Luke Kapayou, Avis Bear-Bass

Summer Undergraduate Research Program (SURP) Symposium

Native American culture demonstrates a spiritual relationship to food, land, and Earth. As opposed to European traditions valuing private property and exploiting the Earth for profit, Native American tradition believes the Earth is owned by no one; food and nourishment from it are a gift for all to take only as needed. The Meskwaki Nation originated around the Great Lakes but was removed to Tama County, Iowa. It is derived from the words “Meskwa” meaning “red” and “aki” meaning “Earth”. This Red Earth nation has initiated a Food Sovereignty program to pass along traditional growing and food preparation practices to …


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