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Articles 9391 - 9420 of 11978
Full-Text Articles in Physical Sciences and Mathematics
Agmaps Land Manager Cd-Rom For Dumbleyung, Kim Brooksbank, Dennis Van Gool, Werner Runge, Ian Kininmonth
Agmaps Land Manager Cd-Rom For Dumbleyung, Kim Brooksbank, Dennis Van Gool, Werner Runge, Ian Kininmonth
Agmaps
This CD-ROM contains land resource maps and land management information relevant to the Dumbleyung area. It was produced by the Department of Agriculture as part of a Natural Heritage Trust project. Also included on the CD is a lot of technical information which may now be out of date.
Resource Notes-Academic Year 2000-01
Resource Notes-Academic Year 2000-01
Conservation and Survey Division
No abstract provided.
Adams County Test Hole Logs, Perry B. Wigley
Adams County Test Hole Logs, Perry B. Wigley
Conservation and Survey Division
No abstract provided.
Logan County Test Hole Logs, Perry B. Wigley
Logan County Test Hole Logs, Perry B. Wigley
Conservation and Survey Division
No abstract provided.
Saunders County Test Hole Logs, Raymond R. Burchett, Scott E. Summerside
Saunders County Test Hole Logs, Raymond R. Burchett, Scott E. Summerside
Conservation and Survey Division
No abstract provided.
Field Trip Guide (For The Nebraska Well Drillers Association) Western Nebraska Geology, J. Cannia, D. Weinert, D. Brost, C. Miller, D. Carlson
Field Trip Guide (For The Nebraska Well Drillers Association) Western Nebraska Geology, J. Cannia, D. Weinert, D. Brost, C. Miller, D. Carlson
Conservation and Survey Division
No abstract provided.
Soil Factors Influencing Eutrophication. In Soilguide. A Handbook For Understanding And Managing Agricultural Soils. (Ed. Geoff Moore), David Weaver, Robert Summers
Soil Factors Influencing Eutrophication. In Soilguide. A Handbook For Understanding And Managing Agricultural Soils. (Ed. Geoff Moore), David Weaver, Robert Summers
Bulletins 4000 -
Eutrophication is essentially the nutrient enrichment of waterways leading to algal growth. It must be controlled to maintain sustainable agricultural systems and the main mechanisms of control are stabilising catchment processes and reducing nutrient output.
Eutrophication can be defined as 'the nutrient enrichment of waters which results in the stimulation of an array of symptomatic changes, among which increased production of algae and macrophytes, deterioration of water quality and other symptomatic changes, are found to be undesirable and interfere with water uses' (OECD 1982). The word eutrophic is a Greek word that means 'well fed'. The food referred to is …
Lead Isotope Tracking Of Atmospheric Response To Post- Industrial Conditions In Yerevan, Armenia, Charles Dunlap, Robert Kurkjian
Lead Isotope Tracking Of Atmospheric Response To Post- Industrial Conditions In Yerevan, Armenia, Charles Dunlap, Robert Kurkjian
Charles Dunlap
Temporal gradients in environmental lead concentrations and isotopic compositions trace the rapidly shifting transition from high to low industrial emissions in Yerevan, Armenia following the dissolution of the Soviet Union in the early 1990s. Shortly after the breakup, in 1995 and 1996, atmospheric lead concentrations averaged ~0.4 µg/m3 and the combustion of leaded gasoline was the primary source of industrial lead emissions in Yerevan. But by 1998, unleaded gasoline was predominant and atmospheric lead concentrations had decreased by two orders of magnitude to ≤ 0.003 µg/m3 because industrial lead emissions from stationary sources had also been radically curtailed. The increased …
Improving Water Quality Through Bmps For Crop Production Systems Whole Farm Soil And Water Management, J. T. Gilmour, L. R. Frye, N. A. Slaton
Improving Water Quality Through Bmps For Crop Production Systems Whole Farm Soil And Water Management, J. T. Gilmour, L. R. Frye, N. A. Slaton
Technical Reports
The major objective of this demonstration project was to assess the usefulness of Global Positioning Systems/Geographic Information Systems (GPS/GIS), water testing, soil testing and yield monitoring in a whole farm water and soil management plan. An important part of this objective was to make recommendations to increase crop productivity and decrease the potential for surface water degradation through erosion and runoff at the farm. The farm was located on 2400 acres in the Bayou de View watershed in Monroe County, Arkansas. The farm lies approximately five miles southwest of the town of Brinkley straddling Highway 17 just south of its …
Predicted Land Use Changes In Agricultural Areas Of Wa And Resulting Impact On The Extent Of Dryland Salinity, C E. Mcconnell
Predicted Land Use Changes In Agricultural Areas Of Wa And Resulting Impact On The Extent Of Dryland Salinity, C E. Mcconnell
Resource management technical reports
An assessment of current and possible future land use in Western Australia was undertaken as part of the National Land and Water Resources Audit. This data was used to assess the impact of land use change on the future extent of salinity. It was found that in some areas there is real capacity for changing land use to impact on recharge to the watertable.
Proceedings Of The Arkansas Water Resources Center Annual Conference: Environmental Hydrology, Kenneth F. Steele
Proceedings Of The Arkansas Water Resources Center Annual Conference: Environmental Hydrology, Kenneth F. Steele
Technical Reports
The papers and abstracts in these proceedings are the result of a joint conference of the Arkansas Water Resources Center (A WRC) with the SouthCentral Section of the Geological Society of America. The joint conference was a success with about 250 participants. A WRC sponsored two sessions on Environmental Hydrology and a short course titled "Hydrogeology and Geochemistry of Salt Water Contamination." The Environmental Hydrology presentations covered wide-ranging topics that reflect the diversity of the environmental settings across Arkansas. Topics ranged from salt water and critical ground water issues in the Delta to endangered species and interbasin ground-water recharge in …
Dealing With A Dry Season, Department Of Agriculture And Food, Western Australia
Dealing With A Dry Season, Department Of Agriculture And Food, Western Australia
Bulletins 4000 -
Farmers' approaches to adverse seasonal conditions whether they be frost, flood or low rainfall should be to acquire as much information as possible on the immediate agronomic and financial situations and make a judgement on the longer term implications for the following seasons. Once the information has been acquired, in consultation with advisers, it is necessary to construct and implement agronomic and business strategies to deal with individual situations.
The agronomic and stocking options for the dry season supplied in this booklet deal with questions and issues arising from the Year 2000 season, which has been characterised by a mid …
Investigation Of Optimum Sample Number And Timing For Determining Pollution Loads, T. S. Soerens, Marc A. Nelson
Investigation Of Optimum Sample Number And Timing For Determining Pollution Loads, T. S. Soerens, Marc A. Nelson
Technical Reports
In order to determine the impacts of non point source (NPS) pollution and to develop Total Maximum Daily Loads (Tr\tfDLs), accurate measurements of pollution loads in streams are critical. The objectives of this study were to accurately detemline pollutant loads at two sites by intensive storm sampling, to develop sub-sampling and other data analysis techniques, to detemline the effect of sample interval on load calculation accuracy, and to find the minimum sample interval required to determine storm loads at a required accuracy. The two stream sites used were a 1st order and a 3rd order stream in the Illinois River …
Catchment Water Management: Guidelines For Those Considering Drainage For Waterlogging And Salinity Management, Department Of Agriculture And Food, Western Australia, Water And Rivers Commission, State Salinity Council
Catchment Water Management: Guidelines For Those Considering Drainage For Waterlogging And Salinity Management, Department Of Agriculture And Food, Western Australia, Water And Rivers Commission, State Salinity Council
Bulletins 4000 -
Landholder groups and government agencies are continuing to develop "best drainage practice" guidelines and these will increase our knowledge of drainage, and deep drainage in particular, as a management tool. The brochure does not provide all the answers, but is intended to provide some basic information to assist landholders who may be considering some form of water management or drainage systems.
Field Trip Guide (For The Nebraska Well Drillers Association) Eastern Nebraska Geology, Scott Summerside, Duane Eversoll, Mark Kuzila, Matt Joeckel
Field Trip Guide (For The Nebraska Well Drillers Association) Eastern Nebraska Geology, Scott Summerside, Duane Eversoll, Mark Kuzila, Matt Joeckel
Conservation and Survey Division
No abstract provided.
Ground Water In Northwest Arkansas: Minimizing Nutrient Contamination From Non-Point Sources In Karst Terrane, R. K. Davis, J. V. Brahana, J. S. Johnston
Ground Water In Northwest Arkansas: Minimizing Nutrient Contamination From Non-Point Sources In Karst Terrane, R. K. Davis, J. V. Brahana, J. S. Johnston
Technical Reports
The purpose of the project is to evaluate the effectiveness of Best Management Practices (BPMs) in preventing non-point source contamination of the ground-water resources in the karst terrane of northwestern Arkansas. Limestone and dolomite aquifers in the region are highly vulnerable to contamination. Ground-water studies performed in the region during the last two decades indicate degradation of these carbonate aquifers by nutrients and bacteria. The expeditious growth of the poultry industry during this period, in combination with the inordinate population growth of the region constitute a threat to the ground-water resources from both point sources and non-point sources of contamination. …
Does Elevated Nitrogen And Sulfur Deposition Lead To Net Base Cation Losses In Northern New England Forest Soils?, Ivan J. Fernandez, Stephen A. Norton, Jeffrey Kahl, Lindsey E. Rustad
Does Elevated Nitrogen And Sulfur Deposition Lead To Net Base Cation Losses In Northern New England Forest Soils?, Ivan J. Fernandez, Stephen A. Norton, Jeffrey Kahl, Lindsey E. Rustad
University of Maine Office of Research Administration: Grant Reports
The aims of this research are to continue treatment and monitoring of a paired watershed experiment at Bear Brook in northern Maine, with an emphasis on changes in soil base cations, particularly calcium. Base cation depletion is well-recognised as a potential problem in soils that have been subjected to acidic N deposition but few data exist from well-controlled, long-term experiments. The Bear Brook watershed has been periodically treated with ammonium sulfate since the fall of 1989 and is believed to be approaching N saturation. Since 1993 the relationship between base cations and strong acid anions has changed, such that labile …
Economics Of Using On-Farm Reservoirs To Distribute Diverted Surface Water To Depleted Ground Water Areas Of The Southern Mississippi Valley Region, Eric J. Wailes, Kenneth B. Young, James Smartt, Gail L. Cramer
Economics Of Using On-Farm Reservoirs To Distribute Diverted Surface Water To Depleted Ground Water Areas Of The Southern Mississippi Valley Region, Eric J. Wailes, Kenneth B. Young, James Smartt, Gail L. Cramer
Technical Reports
Rapid ground water depletion has become a significant problem for parts of the Southern Mississippi River Valley. In 1997, the Arkansas Soil and Water Conservation Commission (ASWCC) declared six counties in the Grand Prairie of Arkansas critical ground water areas. A proposed solution to the ground water depletion problem in this region is to divert surplus flows from the White River by a canal system to the farmer stakeholders. To make the system work, on-farm reservoirs will be needed to store and manage the diverted surface water for crop irrigation use during the growing season.
Pulse And Canola Frost Identification:The Back Pocket Guide, Craig White
Pulse And Canola Frost Identification:The Back Pocket Guide, Craig White
Bulletins 4000 -
This field guide will help you identify the common symptoms of frost damage in pulse and canola crops. It also contains pictures of other plant symptoms often confused with frost damage in these crops.
Frost damage reduces crop yield and grain quality. Early identification of symptoms allows timely crop salvage decisions to be made.
Inspect pulse and canola crops between bud formation and during pod growth if right air temperature (recorded 1.2 m above ground) falls below 2 degrees celsius and there was a frost.
Check low lying, light coloured soil types and known frost prone areas first. Then check …
The Rural Towns Program : Groundwater Modelling : The Merredin Catchment, J Matta
The Rural Towns Program : Groundwater Modelling : The Merredin Catchment, J Matta
Resource management technical reports
Agriculture Western Australia (Agwest), as part of the Rural Towns Program, was engaged to test the application of a groundwater model for potential future management options against salinity for the Merredin townsite. This report illustrates some of the options that could be implemented to achieve the objective of salinity management.
A Conceptual Hydrogeological Model For The Lake Warden Recovery Catchments Esperance, Western Australia, R Short
Resource management technical reports
The National Land and Water Resource Audit (NLWRA), has identified Dryland Salinity as one of seven major themes for an audit of the nation’s land, water, vegetation and natural resource management. Within this theme, Project 3 has been developed to investigate a key catchment type and how management scenarios will impact on dryland salinity processes. The Lake Warden catchments have been chosen as one of four catchment water balance studies to be undertaken nationally. The catchment water balance analysis will be undertaken using numerical modelling by the CSIRO, Division of Land and Water.
Field Trip Guide For The Upper Republican And Middle Republican Nrd's Southwestern Nebraska Geology And Soils, Duane Eversoll, Jim Goeke, Mark Kuzila
Field Trip Guide For The Upper Republican And Middle Republican Nrd's Southwestern Nebraska Geology And Soils, Duane Eversoll, Jim Goeke, Mark Kuzila
Conservation and Survey Division
No abstract provided.
Changes In Alfalfa Breeding — Where Is Alfalfa Headed?, Becky Greenwald
Changes In Alfalfa Breeding — Where Is Alfalfa Headed?, Becky Greenwald
Kentucky Alfalfa and Stored Forage Conference
Alfalfa didn't earn the title "Queen of the Forages" just because of its good looks on rolling hills or sweet smell at harvest. Alfalfa was first described nearly 2,500 years ago, in 490 B.C in the desert regions of what is now Iran. From the Middle East, alfalfa was taken into Europe and South America by invading armies, explorers, and missionaries.
Little Known Facts About Alfalfa, Don Ball
Little Known Facts About Alfalfa, Don Ball
Kentucky Alfalfa and Stored Forage Conference
During the previous nineteen Kentucky Alfalfa Conferences, many topics pertaining to alfalfa have undoubtedly been addressed. In fact, some topics such as establishment techniques, varieties, and factors affecting yield are important enough that they have probably been discussed in one form or another during most of these conferences.
However, a twentieth-year state commodity conference is a milestone that deserves some special consideration, and which should justify inclusion of one or more unique topics on the program. This line of thinking led to idea that for this presentation it might be interesting to discuss some facts about alfalfa that are not …
Reducing Alfalfa Harvesting Losses, Michael Collins
Reducing Alfalfa Harvesting Losses, Michael Collins
Kentucky Alfalfa and Stored Forage Conference
In some areas of the country, producers store a substantial portion of their forage for winter feeding as silage or haylage. However, hay remains the most popular storage method for forage. Hay stores well for long periods and is better suited to cash sale and transportation than silage. Mechanical conditioning, which gained acceptance during the 1950's is probably still the greatest single change in hay harvesting and storage technology during this century. However, a number of other noteworthy changes and innovations have occurred in recent years which have helped to reduce the extent of losses during hay harvesting and storage.
Opportunities For Alfalfa As A Grazing Crop In Kentucky, Ken Johnson
Opportunities For Alfalfa As A Grazing Crop In Kentucky, Ken Johnson
Kentucky Alfalfa and Stored Forage Conference
Why do we continue to hear people talk about Alfalfa as a grazing crop? In my opinion there are two words that come to mind when I think of grazing Alfalfa, quality and yield. Alfalfa is without a doubt the highest quality forage we can graze. Alfalfa is also one of the highest yielding forages we can graze and maybe the highest yielding widely known and widely grown forage available to Kentucky farmers.
Hay Testing And New Marketing Program, Allen Johnson
Hay Testing And New Marketing Program, Allen Johnson
Kentucky Alfalfa and Stored Forage Conference
The Kentucky Department of Agriculture (Hay & Grain Branch) Hay testing program is now entering its 13th year of testing hay for Kentucky producers. The Department continues to use NIR forage analysis equipment. The program has made many improvements and much information has been gained. We continue to strive for quality control and producing accurate results. Recently, many new updates have occurred. New hardware and software have been added, along with the recent purchase of a second hay testing van. By placing a toll free call (1-800- 248-4628) to the Department of Agriculture in Frankfort, we will find a …
An Alfalfa Disease Calendar, Paul Vincelli
An Alfalfa Disease Calendar, Paul Vincelli
Kentucky Alfalfa and Stored Forage Conference
The following calendar provides producers and agricultural professionals with insights that may improve alfalfa production in several ways. First, knowing when to expect certain diseases improves one's ability to diagnose disease problems, which is a fundamental foundation for disease management. The many UK Extension Service publications on alfalfa as well as publications like the Alfalfa Analyst and the Compendium of Alfalfa Diseases, all are useful for diagnosis, but none provides a precise calendar of when to expect activity of alfalfa diseases in Kentucky. An alfalfa disease calendar can also provide occasional insights into timely management practices. For example, being …
Fertilizing Alfalfa For Profit, Monroe Rasnake, Steven G. Isaacs
Fertilizing Alfalfa For Profit, Monroe Rasnake, Steven G. Isaacs
Kentucky Alfalfa and Stored Forage Conference
Alfalfa has the potential for producing high yields of high quality forage with good management. A key component of good management is supplying plant nutrients in adequate quantities and proper balance. In Kentucky, this requires fertilizing soils with agricultural limestone, commercial fertilizers and/or animal manures. Good soil fertility is necessary for alfalfa stand establishment, high yields and long stand life.
Kentucky Alfalfa Conference After Twenty Years, Garry D. Lacefield
Kentucky Alfalfa Conference After Twenty Years, Garry D. Lacefield
Kentucky Alfalfa and Stored Forage Conference
Today marks the 20th consecutive year we have come together for a full days conference featuring "Alfalfa- Queen of the Forages" as the theme and focal point. Only one other state in the U.S. has such an annual event.