Digital Commons Network^™

Leaching Of Accumulated Soil Salinity Under Drip Irrigation, Charles M. Burt, Brett Isbell

BioResource and Agricultural Engineering

Conducted a reclamation leaching experiment in a drip-irrigated pistachio orchard south of Huron, California, during the winter of 2002-2003. The study was conducted to quantify the leaching water required to remove salts from the effective root zone of trees. This experiment tested a new reclamation leaching technique: multiple lines of low-flow drip tape were used to apply water to the area of salinity accumulation along a tree row. This new technique allows water to be applied where there is salt accumulation along the tree row, as opposed to putting water on the entire area of the field. Since reclamation leaching …

Characterization Of Recycled Concrete For Use As Pavement Base Material, Brandon J. Blankenagel

Theses and Dissertations

The use of recycled concrete material (RCM) as pavement base material is a promising but unproven technique for road rehabilitation and construction. A telephone survey conducted to investigate the state of the practice concerning RCM usage in Utah County revealed that RCM is infrequently used in this application due primarily to a lack of practical knowledge about the engineering properties of the material. Therefore, this research was aimed at evaluating the physical properties, strength parameters, and durability characteristics of both demolition and haul-back sources of RCM available in Utah County for use as pavement base material. The study included extensive …

Sheep Updates 2005 - Part 6, Sarah Pugh, Giles Glasson, Ed Barrett-Lennard, Hayley Norman, Matt Wilmot, Meir Altman, Kelly Pearce, Sally Phelan, David Masters, Nadine Eva, Brad Wooldridge, Stephen Gherardi, Lucy Anderton, Gonzalo Mata, P. Sanford, J Young, Tim Wiley, Richard Quinlan, Chris Oldham, Mike Hyder, Mandy Curnow, Samantha Giles, Andrew Thompson

Sheep Updates

This session covers seven papers from different authors:

PASTURES/GRAZING

1. New annual pastures - quality and quantity for fodder conservation?, Sarah Pugh and Giles Glasson, Department of Agriculture Western Australia

2. Saltland Pastures: Dispelling some Myths, Ed Barrett-Lennard^1,3, Hayley Norman^2,3, Matt Wilmat^2,3, Meir Altman,³, Kelly Pearce^2,3, Sally Phelan⁴, David Masters^2,3, ^1. Department of Agriculture, Western Australia, ² CSIRO Livestock Industries, Floreat, WA, ³. CRC for Plant-based Management of Dryland Salinity ⁴. Saltland Pastures Association

3. Pastures: Putting profit back into sandplain, Nadine Eva, Department …

Friends Of Casco Bay Twelve-Year Water Quality Data Analysis: 1993 – 2004 Report, Battelle, Friends Of Casco Bay

Publications

No abstract provided.

Slides: Interstate Marketing And Similar Economic Approaches, Jim Booker

Hard Times on the Colorado River: Drought, Growth and the Future of the Compact (Summer Conference, June 8-10)

Presenter: Jim Booker, Siena College.

27 slides.

Grass Patch-Salmon Gums Area : Catchment Appraisal 2005, Angela Alderman

Resource management technical reports

Rapid catchment appraisal to assess the condition of, and future risks to, agricultural and natural resources within the Grass Patch-Salmon Gums area in Western Australia.

Bio-Optical Variability Of Surface Waters In The Northeastern Gulf Of Mexico, Bisman Nababan

USF Tampa Graduate Theses and Dissertations

Bio-optical variability of surface waters in Northeastern Gulf of Mexico (NEGOM) was examined using satellite and in situ data. Relatively high chlorophyll-a concentration (chl>=1 mg m^-3) and high colored dissolved organic mater (a_g443>=0.1 m^-1) were generally observed inshore, near major river mouths, and in plumes of Mississippi River water that extended offshore during the three consecutive summer seasons (1998, 1999, and 2000). River discharge dominated chlorophyll-a concentration variability inshore, particularly near major river mouths. Strong interannual variability in chlorophyll-a concentration was observed inshore from Escambia to Tampa Bay region during …

Crop Updates 2005 - Farming Systems, David Stephens, Nicola Telcik, Ross Kingwell, Wayne Pluske, Bill Bowden, Mike Collins, Frances Hoyle, D. V. Murphy, N. Milton, M. Osman, L. K. Abbott, W. R. Cookson, S. Darmawanto, Bill Crabtree, Geoff Anderson, Darren Kidson, Ross Brennan, Nick Drew, Craig Scanlan, Lisa Sherriff, Bob French, Reg Lunt, Jeff Russell, Angie Roe, Ian Maling, Matthew Adams, George Yan, Mohammad Hamza, Glen Riethmuller, Wal Anderson, Angela Loi, Phil Nichols, Clinton Revell, David Ferris, Phil Ward, Andrea Hills, Sally-Anne Penny, David Hall, Michael Robertson, Don Gaydon, Tress Walmsley, Caroline Peek, Megan Abrahams, Paul Raper, Richard O'Donnell, Trevor Lacey, Meredith Fairbanks, David Tennant, Cameron Weeks, Richard Quinlan, Alexandra Edward, Chris Carter, Doug Hamilton, Peter Tozer, Renaye Horne, Tracey Gianatti, Paul Carmody, Ian Foster, Michele John, Ross George, Imma Farré, Ian Kininmonth, Dennis Van Gool, Neil Coles, Bill Porter, Louise Barton, Richard Harper, Peter Ritson, Tony Beck, Chris Mitchell, Michael Hill, Fiona Barker-Reid, Will Gates, Ken Wilson, Rob Baigent, Ian Galbally, Mick Meyer, Ian Weeks, Traci Griffin, D. Rodriguez, M. Probust, M. Meyers, D. Chen, A. Bennett, W. Strong, R. Nussey, I Galbally, M. Howden

Crop Updates

This session covers forty four papers from different authors:

PLENARY

1. 2005 Outlook, David Stephens and Nicola Telcik, Department of Agriculture

FERTILITY AND NUTRITION

2. The effect of higher nitrogen fertiliser prices on rotation and fertiliser strategies in cropping systems, Ross Kingwell, Department of Agriculture and University of Western Australia

3. Stubble management: The short and long term implications for crop nutrition and soil fertility, Wayne Pluske, Nutrient Management Systems and Bill Bowden, Department of Agriculture

4. Stubble management: The pros and cons of different methods, Bill Bowden, Department of Agriculture, Western Australia and Mike Collins, …

Ecological Analysis Of Nutrient, Plankton And Benthic Communities In Farmington Bay And The Great Salt Lake, Utah (2004), Amy M. Marcarelli, Wayne A. Wurtsbaugh

Watershed Sciences Faculty Publications

In Fall 2004, the Aquatic Ecology Practicum class at Utah State University finished a third year of research on limnological and ecological characteristics of Farmington Bay and Gilbert Bays of the Great Salt Lake. Our previous research has produced interesting findings in Farmington Bay, including hypereutrophy (Marcarelli et a!. 2001), high phosphorus loading into the Bay, overnight water column anoxia linked to high winds (Wurtsbaugh et a!. 2002), potential predator control of brine shrimp, and high levels of hydrogen sulfide in the sediment and deep brine layer (Marcarelli et a!. 2003). These class findings have lead to increased interest in …

Deep Drainage Is It For Me? Workshop Manual For Participants, Richard Odonnell

Agriculture reports

A Million Hectares for the Future. This workshop forms part of a series of workshops dealing with dryland salinity and options to manage it. All of the workshops have the common theme of identifying the risk at the catchment and farm level, assessing the potential consequences if the risk is not managed and determining the course of action to be taken. You will be able to determine the course of action based on your specific circumstances and goals. There is no one recipe that is suited to all situations.

Glossary Of Terms For Use With The 'A Million Hectares For The Future' Salinity Management Workshops, Rebecca Heath, Paul Raper

Agriculture reports

This Glossary has been developed as part of the GRDC/NDSP-funded, 'A Million Hectares for the Future' project with support and input from key personnel from the Department of Agriculture, Western Australia.

Introduction To Salinity - Workshop Manual For Participants, T M. Lacey

Agriculture reports

This is the first in a series of workshops looking at dryland salinity and options to manage it. These ?Million hectares? workshops have the common themes of environmental improvement. They provide information to help participants identify the risks within the catchment and at a farm level, assess both the likelihood of the risk occurring and consequences if the risk is not managed and determine the best course of action for individual. Participants will determine their courses of action based on their specific circumstances and goals. There is no one recipe that is suited to all participants. The Participants Notes when …

Ecological Analysis Of Nutrient, Plankton And Benthic Communities In Farmington Bay And The Great Salt Lake, Utah (2004), Amy Marcarelli, Wayne A. Wurtsbaugh

Wayne A. Wurtsbaugh

In Fall 2004, the Aquatic Ecology Practicum class at Utah State University finished a third year of research on limnological and ecological characteristics of Farmington Bay and Gilbert Bays of the Great Salt Lake. Our previous research has produced interesting findings in Farmington Bay, including hypereutrophy (Marcarelli et a!. 2001), high phosphorus loading into the Bay, overnight water column anoxia linked to high winds (Wurtsbaugh et a!. 2002), potential predator control of brine shrimp, and high levels of hydrogen sulfide in the sediment and deep brine layer (Marcarelli et a!. 2003). These class findings have lead to increased interest in …

The All-Atlantic Temperature-Salinity-Pressure Relation And Patched Potential Density, Roland A. De Szoeke, Scott R. Springer

Journal of Marine Research

The relation between temperature, salinity, and pressure in the Atlantic Ocean is examined. Most of the Atlantic resolves itself into three two-dimensional manifolds of three-dimensional thermodynamic space: a northern, more saline, branch, and a southern, fresher, branch, each quite independent of pressure, and between them a bridge, on which density is uniform at constant pressure. The properties of the branches are crucial to the construction of joint potential density surfaces, patched together at 1000 db intervals. By resolving more finely in pressure (illustrated with 200 db spacing), a finer system of patched potential density surfaces can be obtained, and indeed …

Determination Of Dynamic Heights In The Bay Of Bengal From Xbt Profiles And Climatological Salinities, M. M. Ali, V. V. Gopalakrishna, Nilesh Araligidad, G. Venkata Reddy, G. Salgoanker

Journal of Marine Research

Dynamic height (DH) computations are necessary for the estimation of geostrophic currents, heat transport studies, identification of eddies and to validate the altimeter sea surface height (SSH) observations. To compute DHs we need the temperature and salinity profiles to a reasonable deeper level. But, temperature profiles alone, such as from XBT (expendable bathy thermograph), are more numerous than combined temperature and salinity measurements from CTD (conductivity, temperature and depth). To use these voluminous temperature measurements from XBT observations in the computation of DHs, temperature/salinity relations were developed in many oceanic regions. Since such an exercise cannot be carried out in …

Influence Of Salinity On Growth And Yield Attributes In Chickpea Cultivars, Ranju Singla, Neera Garg

Turkish Journal of Agriculture and Forestry

Seeds of 4 cultivars of chickpea (2 desi, CSG 8962 and DCP 92-3, and 2 kabuli, CSG 9651 and BG 267) were grown under 0, 4, 6 and 8 dS m^{-1} levels of salinity until maturity. Shoot and root dry weights, root shoot ratio and various yield parameters were evaluated under salinity at 40, 70 and 100 days after sowing. Salinity significantly reduced dry matter accumulation in both roots and shoots in all cultivars, though declension was more pronounced in BG 267 (kabuli) and DCP 92-3 (desi). Root growth was more adversely affected than shoot growth, which also had an …

Comparative Response Of Two Olive (Olea Europaea L.) Cultivars To Salinity, Mehmet Ali̇ Demi̇ral

Turkish Journal of Agriculture and Forestry

Two olive (Olea europaea L.) cultivars, Leccino and Barnea, were exposed to increasing concentrations of NaCl (control, 2560, 5120 and 7680 mg l^{-1} of NaCl, which is equal to 4.0 dS m^{-1}, 8.0 dS m^{-1} and 12.0 dS m^{-1} salinity) in a sand culture. Plants were harvested and separated into different organs. Thin root, thick root, shoot and leaves were analysed for Na^+, Cl^-, K^+, Ca^{+2} and Mg^{+2} contents. Dry weights of the plants were determined. Shoot elongation was also measured. Increasing NaCl inhibited growth of the plants. However, this effect was only statistically significant in Barnea. The growth of …

Maine Horseshoe Crab (Limulus Polyphemus) Spawning Surveys, 2004, Susanne Schaller, Peter Thayer, Sherry Hanson, Shari Latulippe, Elizabeth Solet

Publications

The Maine Horseshoe Crab Surveys were begun in 2001 to establish quantitative baseline data and determine whether horseshoe crab (Limulus polyphemus) populations are stable or declining. Spawning counts were conducted at sites from Casco Bay (southern Maine) to Frenchman’s Bay (downeast), to establish an index of relative abundance. Few (relatively) abundant populations remain in Maine at Middle Bay (Harpswell/Brunswick), Thomas Point (Brunswick), and in the Damariscotta River. Healthy but less abundant populations persist in the Bagaduce River (Brooksville/ Sedgwick) and in Taunton Bay (Hancock/Franklin/Sullivan).

An intensive tagging study has been conducted on Taunton Bay, which offers a natural population with …

Exogenous Application Of Gibberellic Acid Counteracts The Ill Effect Of Sodium Chloride In Mustard, Shaheena Afroz, Firoz Mohammad, Shamsul Hayat, Manzer H. Siddiqui

Turkish Journal of Biology

The response of mustard (Brassica juncea (L.) Czern & Coss cv. Varuna) to presowing seed treatment with sodium chloride (NaCl) was investigated. The plants raised from treated seeds were sprayed with water or 10^{-6} M GA_3 at the 30- day stage. The seeds imbibed in 1 or 10 mM of NaCl resulted in a decrease in dry mass, leaf chlorophyll content, carbonic anhydrase activity (E.C. 4.2.1.1), nitrate reductase activity (E.C. 1.6.6.1) and net photosynthetic rate at the 60-day stage, and pod number and seed yield at harvest. However, spray application of GA_3 neutralized the ill effect of soaking treatment in …

Salinity Response Of Transgenic Potato Genotypes Expressing The Oxalate Oxidase Gene, Hakan Turhan

Turkish Journal of Agriculture and Forestry

In vitro and in vivo responses of transgenic and non-transgenic potato (Solanum tuberosum L.) genotypes to salinity were investigated. A gene responsible for the production of oxalate oxidase enzyme, whose expression has been associated with plant stress tolerance, was used. Transgenic potato plants expressing the oxalate oxidase enzyme were produced using Agrobacterium-mediated transformation. The transgenic nature of the plants was verified by their antibiotic (kanamycin) resistance and then in vitro enzyme assays. Four independent transgenic genotypes obtained from 2 cultivars, Maris Bard and Desiree, were tested at 5 levels of NaCl (0%, 0.25%, 0.50%, 0.75% and 1.00% w/v) in vitro. …

A Million Hectares For The Future : A Final Report Prepared For The Grains Research And Development Corporation, Trevor Lacey

Research Reports

Final report -- Evaluation summary report for the "Million hectares for the future" pre-pilot workshops series -- Opportunities for the use of Million hectares workshops / products in future -- Workshop development process.
(En)
"The "A million hectares for the future" project has developed a series of workshops (based on adult learning principles) for use by industry facilitators working with farmers. They outline salinity hazards and management options to farmers as part of an environmental improvement systems." ... with farmers in Western Australia and South Australia" - - Project summary.

Seasonal And Spatial Patterns In Salinity, Nutrients, And Chlorophyll Α In The Alvarado Lagoonal System, Veracruz, Mexico, Angel Moran-Silva, Luis Antonio Martinez Franco, Rafael Chavez-Lopez, Jonathan Franco-Lopez, Carlos M. Bedia-Sanchez, Francisco Contreras Espinosa, Francisco Gutierrez Mendieta, Nancy J. Brown-Peterson, Mark S. Peterson

Gulf and Caribbean Research

Ten monthly collections, distributed among three seasons, were taken from July 2000 to June 2001 in the Alvarado lagoonal system, Veracruz, Mexico. Variables measured in situ included dissolved oxygen, salinity, and water temperature. Water samples were collected to determine concentrations of ammonium, nitrates, nitrites, orthophosphates, total phosphorus and chlorophyll α. Collections representing the rainy season were taken in September and October, those for the nortes season were taken in November, December, and January, and dry season collections were taken during February, March, May June, and July. There was seasonal and spatial variation in nutrient concentrations, and they were related to …

Wagin-Woodanilling (Zone 5) : Catchment Appraisal 2005, K Ohlsen, T Schulz, T W. Mathwin, Gina Pemberton, Henry Brockman, J Firth, Mitchell Davies, Heather M. Percy

Resource management technical reports

The aim of this report is to assess the current extent of salinity and other natural resource degradation issues and provide landholders with the best current management options to address natural resource management issues and enhance sustainable agricultural production.

Salinity Investment Framework : Agricultural Land And Infrastructure, Richard J. George Dr, Ross Kingwell, J Hill-Tonkin, R A. Nulsen

Resource management technical reports

Greater awareness of the potential impact of salinity has led to increased public and private expenditure. The Salinity Investment Framework was developed to insert rigour and accountability into decision-making processes and guide future development. This report focusses on the economic impact of salinity on private and public land and the infrastructure of areas in Western Australia, including towns, railway systems, roads and the like.

Agricultural Resource Priorities And Recommendations For The Avon River Basin Natural Resource Management Strategy, Paul D. Galloway, C E. Mcconnell, D W. Cummins, K Ohlsen

Resource management technical reports

This report for the Avon Natural Resource Management Strategy provides an assessment of the current status of land resources throughout the Avon River Basin in Western Australia. It identifies the sub-regions and landscape components of the area and the land resource assets. The greatest threats are salinity, soil acidification, subsurface compaction, waterlogging, water and wind erosion, and biosecurity.

Greenough Region Catchment Appraisal, Angela Stuart-Street, M Clarke

Resource management technical reports

This report discusses a range of options for the Greenough region, which is comprised of eight shires including the Shires of Northampton, Chapman Valley, Mullewa, Greenough, Morawa, Irwin, Mingenew and Three Springs, and also the city of Geraldton. A range of options for reducing land degradation is discussed. Factors such as soil type, annual rainfall, enterprise mix and financial structure are also considered.

Goodlands Oil Mallee Study : Drill Completion And Preliminary Hydrogeological Interpretation, D L. Bennett, Russell John Speed, Peter Taylor, Joint Venture Agroforestry Program (Australia), Western Australia. Department Of Conservation And Land Management

Resource management technical reports

No abstract provided.

Deep Drains To Manage Groundwater, Neil Cox, Sylvia Tetlow, Neil Coles

Bulletins 4000 -

A channel that is 1.0 m to 3.0 m in depth is considered to be a deep drain. The drain is excavated to a depth that is sufficient to intercept the watertable in order to capture and convey that groundwater from flat, poorly drained land.

The drain can either be ‘open’ to allow the inflow of surface water or ‘leeved’ to exclude surface water. An open deep drain has its spoil banks placed on one side or on alternate sides of the channel (Figure 1) while a leveed deep drain has continuous spoil banks placed on both sides of the …

Groundwater Study Of The Boddington Townsite, Gregory Paul Raper

Resource management technical reports

A study of the groundwater beneath the Boddington townsite was carried out in April 2002. The aim was to assess the salinity risk to the townsite infrastructure and to accelerate the implementation of effective salinity management for the town. The study consisted of field reconnaissance, a drilling program, expansion of a groundwater-monitoring network installed in March 2001, and groundwater monitoring.

Natural Resource Management Issues For The South Coast Regional Strategy, B Nicholas

Resource management technical reports

This report has been prepared by the Agricultural Resource Management Program of the Department of Agriculture to assist SCRIPT (South Coast Regional Initiative Planning Team) in preparing the regional strategy. It records the key natural resource management issues threatening agricultural land on the south coast of Western Australia. Managing agricultural land effectively should be a priority in reducing the risks of land degradation on all assets-productive agricultural land, biodiversity and waterways.