Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Kentucky (7964)
- Department of Primary Industries and Regional Development, Western Australia (1422)
- University of Nebraska - Lincoln (916)
- Utah State University (235)
- University of Arkansas, Fayetteville (231)
-
- Selected Works (118)
- California Polytechnic State University, San Luis Obispo (78)
- South Dakota State University (56)
- The University of Maine (55)
- University of Colorado Law School (45)
- Purdue University (43)
- Tennessee State University (43)
- University of Nevada, Las Vegas (42)
- University of Vermont (36)
- University of Tennessee, Knoxville (32)
- Portland State University (30)
- University of Minnesota Morris Digital Well (24)
- Old Dominion University (23)
- SelectedWorks (23)
- University of Texas Rio Grande Valley (22)
- Western Kentucky University (20)
- University of Dayton (19)
- Murray State University (18)
- Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan (17)
- Chapman University (16)
- City University of New York (CUNY) (16)
- Iowa State University (16)
- Kansas State University Libraries (16)
- Stephen F. Austin State University (16)
- Boise State University (15)
- Keyword
-
- Western Australia (1021)
- Grains and field crops (606)
- Nebraska (484)
- Grazing (348)
- Soil (320)
-
- Groundwater (237)
- Nitrogen (208)
- Salinity (189)
- Alfalfa (180)
- Biosecurity, pests, weeds and diseases (159)
- Grassland (156)
- Climate change (150)
- Pasture (150)
- Geology (148)
- Forage (146)
- Phosphorus (144)
- Sheep (141)
- Yield (136)
- Biodiversity (133)
- Soils (132)
- Cattle (126)
- Natural resources (115)
- Forage quality (114)
- Silage (113)
- Water (105)
- Legumes (100)
- Livestock (100)
- Sustainability (98)
- Vegetation (97)
- Hydrology (96)
- Publication Year
- Publication
-
- IGC Proceedings (1993-2023) (7001)
- Conservation and Survey Division (839)
- Experimental Summaries - Plant Research (668)
- Kentucky Alfalfa and Stored Forage Conference (382)
- Resource management technical reports (288)
-
- Soil Science News and Views (183)
- Kentucky Grazing Conference (176)
- Journal of the Department of Agriculture, Western Australia, Series 4 (169)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (147)
- Graduate Theses and Dissertations (81)
- Bulletins 4000 - (80)
- Technical Reports (79)
- Plant and Soil Sciences Faculty Publications (77)
- Electronic Theses and Dissertations (65)
- Technical Bulletins (52)
- The State of Soil Science in WA (52)
- Biosystems and Agricultural Engineering Faculty Publications (40)
- Earth and Soil Sciences (40)
- Associate Professor Edward D Burton (37)
- Masters Theses (37)
- KWRRI Research Reports (29)
- Faculty Publications (28)
- Graduate College Dissertations and Theses (28)
- Agricultural and Environmental Sciences Faculty Research (26)
- Arkansas Agricultural Experiment Station Research Series (26)
- Journal of the Minnesota Academy of Science (24)
- The Public Lands During the Remainder of the 20th Century: Planning, Law, and Policy in the Federal Land Agencies (Summer Conference, June 8-10) (22)
- Theses and Dissertations--Plant and Soil Sciences (21)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (21)
- Agriculture reports (20)
- Publication Type
Articles 10321 - 10350 of 11978
Full-Text Articles in Physical Sciences and Mathematics
Bay/Delta Standards Memorandum And Exhibits, Thomas J. Graff
Bay/Delta Standards Memorandum And Exhibits, Thomas J. Graff
Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)
47 pages.
Update On Ridge-Tillage In Kentucky, David C. Ditsch, Monroe Rasnake
Update On Ridge-Tillage In Kentucky, David C. Ditsch, Monroe Rasnake
Soil Science News and Views
Grain crop producers in Kentucky are constantly evaluating various tillage systems that will best fit their particular cropping environment. One such tillage system that has shown some promise primarily in the mid-west is a system referred to as ridge-tillage. Ridge-till is basically a system by which a grain producer plants his crop on an elevated row that is maintained each year during cultivation for week control. The same ridge is re-used year after year thereby developing a controlled traffic pattern. Since the cultivation procedure is also recommended for maintaining the ridge, many ridge-till farmers have reduced their herbicide cost by …
Estimating Potential Ground And Surface Water Pollution From Land Application Of Poultry Litter - Ii, D. C. Wolf, J. T. Gilmour, P. M. Gale
Estimating Potential Ground And Surface Water Pollution From Land Application Of Poultry Litter - Ii, D. C. Wolf, J. T. Gilmour, P. M. Gale
Technical Reports
In Arkansas, approximately 1 Tg of poultry (Gallus gallus domesticus) manure and litter is produced annually. These waste products are commonly applied to pastures as a soil amendment or fertilizer, but excessive application rates and poor management practices could result in nutrient contamination of ground and surface water. The purpose of this study was to: (1) assess the nutrient concentrations in poultry manure and (2) evaluate the nitrogen loss from land-applied poultry litter and manure due to ammonia volatilization and denitrification. Analyses for total Kjeldahl nitrogen (TKN), inorganic nitrogen (Ni), phosphorus (P), and potassium (K) were compared in 12 wet …
Development Of A Combined Quantity And Quality Model For Optimal Management Of Unsteady Groundwater Flow Fields, R. C. Peralta, J. Solaimanian, C. L. Griffis
Development Of A Combined Quantity And Quality Model For Optimal Management Of Unsteady Groundwater Flow Fields, R. C. Peralta, J. Solaimanian, C. L. Griffis
Technical Reports
Presented are alternative techniques for including conservative solute transport within computer models for optimizing groundwater extraction rates. Unsteady two-dimensional flow and dispersed conservative solute transport are assumed. Comparisons are made of the practicality of including modified forms of implicit and explicit finite difference solute transport equations within optimization models. These equations can be calibrated and subsequently used within a MODCON procedure. The MODCON modelling procedure consists of an integrated series of five optimization or simulation modules. The procedure is applicable for either an entire aquifer system or for a subsystem of a larger system. The first module, A, computes physically …
Qualitative And Quantitative Aquatic Algal Data Compilation To Determine Macrotrends - Iv, Richard L. Meyer
Qualitative And Quantitative Aquatic Algal Data Compilation To Determine Macrotrends - Iv, Richard L. Meyer
Technical Reports
A data base of the algae of Arkansas ecoregions has been estabblished by the use of a relational data base management system (dBase III plus). The system was chosen to be readily available for a variety of microcomputers using MS- and PC-DOS. The data base contains taxonomic fields from division through variety, synonymy, authors, initial description, date, and definitive descriptive source. The data are cross-referenced by ecoregion, Round's community and subcommunity designations. The data base contains greater than 1,500 taxonomic records in all divisions and classes of freshwater algae. The data are sortable by any of the included parameters. The …
Estimated Use Of Water In Nebraska, 1985, Eugene K. Steele Jr.
Estimated Use Of Water In Nebraska, 1985, Eugene K. Steele Jr.
Conservation and Survey Division
No abstract provided.
A Guide To The Practical Use Of Aerial Color-Infrared Photography In Agriculture, Donald C. Rundquist, Scott A. Samson
A Guide To The Practical Use Of Aerial Color-Infrared Photography In Agriculture, Donald C. Rundquist, Scott A. Samson
Conservation and Survey Division
No abstract provided.
Effect Of Crop Rotation On Corn And Soybean Yields, James H. Herbek, Lloyd W. Murdock, T. Gray
Effect Of Crop Rotation On Corn And Soybean Yields, James H. Herbek, Lloyd W. Murdock, T. Gray
Soil Science News and Views
Yield of both corn and soybeans has been shown to increase when grown in a rotation as compared to continuous cropping of either of the two crops. These yield improvements are commonly associated with fewer disease, insect and weed problems; better soil tilth; and in the case of corn, a nitrogen contribution from the preceding soybean crop. One or a combination of these factors are believed to have an effect. In the past few decades the yield benefits of rotations were often overlooked as fertilizers and pesticides were used as a substitute for crop rotation. However, research has shown that …
Carryover Effect Of New Soybean Herbicides On Corn, William W. Witt, J. A. Mills, G. L. Schmitz
Carryover Effect Of New Soybean Herbicides On Corn, William W. Witt, J. A. Mills, G. L. Schmitz
Soil Science News and Views
Scepter, Canopy, Gemini, Classic, and Command are new soybean herbicides which were introduced in 1986 and are being used in Kentucky. These herbicides have gained widespread popularity because of their excellent control of cocklebur, pigweeds, morningglories, and velvetleaf. In addition, they can be applied in a variety of ways which makes them attractive to the soybean producer. However, these herbicides do have potential shortcomings in that they can persist in the soil for several months and cause injury to rotational crops such as corn or wheat. Since greater than 60% of the soybeans grown in Kentucky are rotated to corn, …
The Conservation Reserve Program (Crp) And Conservation Compliance---Two Components Of The 1985 Farm Bill, Monroe Rasnake
The Conservation Reserve Program (Crp) And Conservation Compliance---Two Components Of The 1985 Farm Bill, Monroe Rasnake
Soil Science News and Views
The Conservation Reserve Program: This component of the 1985 Food Security Act is still open to participation by qualified landowners. Participation in CRP provides for farmers to be paid an annual rental fee for ten years to take highly erodible land out of row crop production and maintain a conservation cover crop. The annual rental fee for CRP land already signed up in Kentucky has averaged about 58 dollars per acre.
Evaluating Hay Quality, William C. Templeton Jr.
Evaluating Hay Quality, William C. Templeton Jr.
Kentucky Alfalfa and Stored Forage Conference
One of the frustrations to nutritionists interested in the feeding value of roughage has been that with all their book knowledge and technical aids no dependable scheme they could devise would consistently rank forages in feeding value, while the dumb ruminant animal could unerringly detect differences in their nutritive values.
-E. W. Crampton, 1965
Alfalfa Yield, Quality And Persistence, Michael Collins
Alfalfa Yield, Quality And Persistence, Michael Collins
Kentucky Alfalfa and Stored Forage Conference
Alfalfa management in complex because it requires the simultaneous consideration of factors that affect the yield of the crop, forage quality for ruminants and the persistence of the stand. Considerable research has demonstrated the importance of agronomic factors such as soil pH, drainage and soil fertility in successful alfalfa production. Beyond soil factors and cultivar selection, selection of harvest date is one the most important management factors that influence yield, quality and stand persistence.
The Alfalfa Plant's Reaction To Grazing, Paul Deaton
The Alfalfa Plant's Reaction To Grazing, Paul Deaton
Kentucky Alfalfa and Stored Forage Conference
Will the alfalfa plan survive grazing intensively by cattle? This question is asked most frequently these days.
Let's review the parts of an alfalfa plant to begin this discussion. Those parts are: Roots, crown and top growth. Alfalfa has a tap root which is used to store nutrient reserves for survival. It's ability to store these reserves and pull from them during times of stress (drought, cutting, etc.) makes it a very hardy plant.
Grazing Alfalfa — A Reality, John H. Wilson
Grazing Alfalfa — A Reality, John H. Wilson
Kentucky Alfalfa and Stored Forage Conference
Alfalfa offers an excellent opportunity to beef producers for receiving excellent performance. Exciting results have been seen for the past two years on the Thomas Farm (Registered Polled Hereford). A total of 1063 pounds of beef per acre produced this year, with similar results seen in 1986 - a total of 874 pounds of beef produced in 1986.
Weed Control In Alfalfa, Jonathan D. Green
Weed Control In Alfalfa, Jonathan D. Green
Kentucky Alfalfa and Stored Forage Conference
Since weeds which infest forages are harvested along with the alfalfa crop, total dry matter production does not necessarily increase with good weed control. However, controlling weeds which invade alfalfa improve the forage quality. In addition, maintaining good weed control may also prolong the productive life of the alfalfa stand.
If managed properly, established alfalfa stands can effectively prevent many annual and perennial weeds from becoming a major problem. Maintaining proper soil fertility, soil pH, and good soil drainage are some practices which help keep the alfalfa competitive against invading weeds. Other factors which put alfalfa under stress, such as …
Blister Beetles In Alfalfa, C. M. Christensen, Lee H. Townsend
Blister Beetles In Alfalfa, C. M. Christensen, Lee H. Townsend
Kentucky Alfalfa and Stored Forage Conference
Blister beetles are Iong cylindrical beetles that may be black, gray, yellow and brown striped, black with gray margins on the wing covers or black with a red head. These insects are usually found feeding in clusters on alfalfa. They can cause severe sickness and sometimes death when livestock especially horses eat the live or dead beetles. They are usually not found in alfalfa in mid-July and early August which translates to the third or fourth cutting. Blister beetles (black ones, gray margined ones, and yellow striped ones) were collected in very noticeable numbers in several central Kentucky alfalfa fields …
Alfalfa Establishment, Garry D. Lacefield
Alfalfa Establishment, Garry D. Lacefield
Kentucky Alfalfa and Stored Forage Conference
Alfalfa "Queen of the Forage Crops" is the most important forage legume grown in the United States. It is grown over a wide range of soil and climatic conditions. Alfalfa has the highest yield potential and the highest feeding value of all adapted perennial forage legumes. It is a versatile crop which can be used for pasture, hay, silage, green-chop, soil improvements and soil conservation. As a result. of this crops many merits; especially yield, quality and versatile use, it can be used successfully in many animal feeding programs.
Soil And Fertility Considerations For Growing Alfalfa, Monroe Rasnake
Soil And Fertility Considerations For Growing Alfalfa, Monroe Rasnake
Kentucky Alfalfa and Stored Forage Conference
Alfalfa is a widely adapted crop which is grown across the United states and in many other counties. However, it is very sensitive to many soil and fertility factors which can limit its productivity. It is important to understand these factors in order to be a successful alfalfa producer.
Foreword [1988], Garry D. Lacefield
Foreword [1988], Garry D. Lacefield
Kentucky Alfalfa and Stored Forage Conference
This is the front matter of the proceedings.
Maximum Net Returns From Fertilizers, Lloyd W. Murdock, Kenneth L. Wells, William O. Thom
Maximum Net Returns From Fertilizers, Lloyd W. Murdock, Kenneth L. Wells, William O. Thom
Soil Science News and Views
Considerable interest in trends taking place in the consumption of commercial fertilizers in Kentucky has been evident during the last two or three years. Due both to the stressed agricultural economy and to government programs, total tonnage has dropped significantly. This has made a direct impact on the fertilizer industry serving Kentucky. Concern has been expressed that UK is "telling farmers that they're using too much fertilizer", suggesting that this is the cause of the reduced volume experienced by many dealers. We hope to address this concern in such a way that UK's position regarding use of commercial fertilizers for …
Hydrogeology Of Garfield And Wheeler Counties, Nebraska, Dennis R. Lawton, Robert A. Hiergesell
Hydrogeology Of Garfield And Wheeler Counties, Nebraska, Dennis R. Lawton, Robert A. Hiergesell
Conservation and Survey Division
No abstract provided.
Crop Establishment Methods For Lupin Disease Management 13 To 23, M Sweetingham
Crop Establishment Methods For Lupin Disease Management 13 To 23, M Sweetingham
Experimental Summaries - Plant Research
88NO73, 88ME59, Phosphorus x disease on lupins.
Aim, location, soil type, rotation, establishment, results.
88ME60, Seed treatments for brown spot and Pleiochaeta root rot of lupins.
88SC33, Rovral and Sumisclex, seed treatment for lupins.
Rhizoctonia root and hypocotyl rots.
88NO74, fungicides and sowing depth for Rhizoctonia root rot.
88GE53, Rizolex for Rhizoctonia control in lupins.
88GE31, Cultivation and sowing depth for Rhizoctonia patch and hypocotyl rot of lupins.
88E38, Cultivation and sowing depth effects on Rhizoctonia bare patch in lupins.
88NO92, Semi selective fungicide drenches for root/hypocotyl rot of lupins.
Annual Medic Evaluation On Eradu Sandplain Soil - 3 M Rows., Bradley Nutt, M. K. Laslett
Annual Medic Evaluation On Eradu Sandplain Soil - 3 M Rows., Bradley Nutt, M. K. Laslett
Experimental Summaries - Plant Research
Trial 88EC16
Location: East Chapman Research Station
Inoculated and lime pelleted seed was hand sown into 3m rows at 0.25 g/m. All the medics were inoculated with WSM 540 which may have been less effective with some of the M. littoralis and M. tornata varieties. The 1988 season was very good in terms of frequency and amount of rainfall which is reflected in the high seed yields compared to 1987.
National Subterranean Clover Improvement Programme, P. Nichols
National Subterranean Clover Improvement Programme, P. Nichols
Experimental Summaries - Plant Research
Trial 88PE27 - University Field Station, Shenton Park
Trial 88WH43 - Wongan Hills Research Station.
The project aims to develop, by breeding and selection, better adapted and more productive low-oestrogen cultivars of subterranean clover for a range of environments in southern Australia. The programme is a collaborative one with the University of Western Australia and consists of two phases (i) early generation selection, which involves selecting varieties satisfying primary selection criteria; and (ii) field evaluation of advanced lines, which is conducted by the Departments of Agriculture in each State and co-ordinated by the Plant Breeder. The first phase is conducted …
Changes In Rainfall Patterns In Kentucky During The 1980'S, Kenneth L. Wells, R. E. Phillips, H. B. Rice
Changes In Rainfall Patterns In Kentucky During The 1980'S, Kenneth L. Wells, R. E. Phillips, H. B. Rice
Soil Science News and Views
Annual rainfall patterns in Kentucky have not been average during the 1980's. During this timespan there have been two droughts of statewide significance, and there has been wide variability within the state during most years. Because of this wide fluctuation, there has been some concern that rainfall patterns either are changing or have changed. In order to evaluate this concern, rainfall data from sites in western, south central, north central, east central, and eastern Kentucky were analyzed. An average amount of rainfall which would be predicted for these sites was calculated, using the average of that which fell annually from …
Experimental Summary 1988, R Ac Jones, J M. Wroth, A R. Baker, A D. Lucas, S J. Mckirdy, A D. Lucas, C R. Wilson, W Pathipanawat, R D. Harris, K Clarke, D Van Den Bosch
Experimental Summary 1988, R Ac Jones, J M. Wroth, A R. Baker, A D. Lucas, S J. Mckirdy, A D. Lucas, C R. Wilson, W Pathipanawat, R D. Harris, K Clarke, D Van Den Bosch
Experimental Summaries - Plant Research
1. Disease complexes in wheat field screening trials.
2. Glasshouse screening for wheat leaf disease resistance.
3. Effect of phosphate, stand density and Rovral on Pleiochaeta setosa in lupins.
4. Genotype and rvral for Pleichaeta setosa in lupins.
5. Control of Septoria in early sown wheat.
6. Controlling Pyrenophora graminea leaf stripe in barley.
7. Effect of environment on leaf stripe in barley.
8. Unusual seed quality problems.
Postharvest Fungicide Treatments For Control Of Penicilium Storage Rot Of Pears, P Mcr Wood
Postharvest Fungicide Treatments For Control Of Penicilium Storage Rot Of Pears, P Mcr Wood
Experimental Summaries - Plant Research
88SW1, Karragullen.
Table one.
Comments.
Winter Dormant Treatment For Control Of Apple Mildew, P Mcr Wood
Winter Dormant Treatment For Control Of Apple Mildew, P Mcr Wood
Experimental Summaries - Plant Research
88MA51, 88MA50, 88BY32.
Table two.
Comments
Evaluation Of New Pasture Legume Species In Terms Of Summer Feeding Value And Effects On Wool Production., Tess Casson
Evaluation Of New Pasture Legume Species In Terms Of Summer Feeding Value And Effects On Wool Production., Tess Casson
Experimental Summaries - Plant Research
Trial 86KA71
Location: Private farm 'Monalta' - south-east of Katanning.
As outlined by S. Flecker in the 1987 summary for this trial, the expected result of the research is that the feeding value of burr medic pastures will be greater than the feeding value of sub. clover and barrel medic pasture, particularly over the dry summer/autumn period.
Soil-Plant Organochlorine Pesticide Research., Tony Albertsen
Soil-Plant Organochlorine Pesticide Research., Tony Albertsen
Experimental Summaries - Plant Research
88MA42, 88BU18, 88BU21, 88BU22, 88BY16, 88AL20, 88AL21, 88AL22, 88BY9, 88 BY1, 88BY11, 88BY12, 88BY13, 88BY14, 88BY15, 88BU19, 88BU20, 88MA43, 88MA44, 88MA45, 88MA46, 86V1, 86V2, 84V2.
Locations: Albany, Bunbury, Busselton and Manjimup.
In 1988 a research programme was initiated to help define the relationship between soil and plant contamination. Two main experiments were established 1) Pasture contamination in annual and perennial grazed swards. 2) Plant species contamination in a wider range of pasture and crops.