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Articles 10531 - 10560 of 11182
Full-Text Articles in Physical Sciences and Mathematics
Soil Improvement With Bauxite Residues, W H. Tacey, S. C. Ward, K. J. Summers, N. J. Barrow
Soil Improvement With Bauxite Residues, W H. Tacey, S. C. Ward, K. J. Summers, N. J. Barrow
Journal of the Department of Agriculture, Western Australia, Series 4
The sandy soils of the Peel-Harvey catchment hold water and nutrients very poorly. The Gavin ridges dry out quickly during rainless periods and this severely limits pasture growth. These ridges and the lower lying Joel and Coolup sands also lose a large proportion of the phosphorus, sulfer and potash fertilisers applied to them. Normally the sands lack clay materials to bind and hold the nutrients so rainfall leaches them out.
The Peel-Harvey Study Group, CSIRO, Alcoa and Murdock University have studied the use of a residue from bauxite mining to help overcome these problems. The treated residue has a texture …
Soil Acidity And Liming In The Lower Great Southern, R N. Glencross, M. G. Clarke
Soil Acidity And Liming In The Lower Great Southern, R N. Glencross, M. G. Clarke
Journal of the Department of Agriculture, Western Australia, Series 4
In the 375 to 750 millimetre rainfall area of the Lower Great Southern, reports of loss of subterranean clover from established pastures, reduced carrying capacity for sheep and increasing soil acidity lead to the establishment in 1981 of a research programme into the effects of soil acidity on pasture productivity in that region.
The Prairie Naturalist Volume 15, No. 4. December 1983
The Prairie Naturalist Volume 15, No. 4. December 1983
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
ASPECTS OF THE NESTING ECOLOGY OF LEAST TERNS AND PIPING PLOVERS IN CENTRAL NEBRASKA ▪ C. A. Faanes
LEAD SHOT INCIDENCE IN SANDHILL CRANES COLLECTED FROM ALASKA, CANADA, AND TEXAS ▪ B. M. Wallace, R. J. Warren and G. D. Gaines
LEAD SHOT INCIDENCE IN WATERFOWL COLLECTED FROM THE TEXAS HIGH PLAINS ▪ B. M. Wallace, R. J. Warren and R. J. Whyte
SMALL MAMMALS OF WINTER WHEAT AND GRAIN SORGHUM CROPLANDS IN WEST-CENTRAL KANSAS ▪ K. W. Navo and E. D. …
The Prairie Naturalist Volume 15, No. 3. September 1983
The Prairie Naturalist Volume 15, No. 3. September 1983
The Prairie Naturalist
Paul B. Kannowski, Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
WINTER DISTRIBUTION AND HABITAT USE BY MULE DEER AND WHITE-TAILED DEER IN SOUTHEASTERN MONTANA ▪ J. E. Swenson, S. J. Knapp and H. J. Wentland
HISTORY AND STATUS OF EUROPEAN FALLOW DEER (Dama dama dama) AT ARGONNE NATIONAL LABORATORY, ILLINOIS ▪ G. G. Gray
REPRODUCTIVE CHRONOLOGY OF GREATER PRAIRIE CHICKENS IN MINNESOTA AND RECOMMENDATIONS FOR CENSUSING AND NEST SEARCHING ▪ W. D. Svedarsky
SUMMER BIRD USE OF A STATE-OWNED HUNTING AREA IN NORTHWESTERN ILLINOIS ▪ M. W. Brown
EVALUATION OF INTRODUCED RUFFED GROUSE IN WESTERN …
The Prairie Naturalist Volume 15, No. 2. June 1983
The Prairie Naturalist Volume 15, No. 2. June 1983
The Prairie Naturalist
Paul B. Kannowski, Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
EFFECTS OF FIRE ON RODENTS IN TALLGRASS PRAIRIE OF THE FLINT HILLS REGION OF EASTERN KANSAS. D. W. Kaufman, G. A. Kaufman, and E. J. Finck
FECAL pH AND FOOD HABITS OF SYMPATRIC LAGOMORPHS IN TEXAS R. J. Warren
UNUSUAL PLANT ASSEMBLAGE IN WALSH COUNTY, NORTH DAKOTA ▪ B. Heidel
ADDITIONAL RECORDS OF PASSERINES FEEDING ON POPLAR GALLS, AND A POSSIBLE MECHANISM FOR SUMMER NOMADISM IN BOREAL FINCHES ▪ P. J. DuBowy
UPDATE ON THE AMERICAN BALD EAGLE, Haliaeetus leucocephalus L., IN NEBRASKA ▪ S. J. Rothenberger …
The Combined Effect Of Cu And Zn On Selenastrum Capricornutum, Helmer Colonia-Roque
The Combined Effect Of Cu And Zn On Selenastrum Capricornutum, Helmer Colonia-Roque
Dissertations and Theses
It has been demonstrated that the toxicity of heavy metals depends on their chemical speciation and can be related to their free ion activities, rather than the total metal concentrations. The objective of this study was to determine the effect of combined free ions of zinc and copper on the toxicity to the green alga Selenastrum capricornutum. This alga was grown in a defined medium, under controlled laboratory conditions, with a varying range of zinc and copper concentrations. The growth rate of the alga was inhibited at pZn = 5.93 or at pCu = 7.24. The results suggest that …
Annean Station Management Plan, A A. Mitchell
Annean Station Management Plan, A A. Mitchell
Resource management technical reports
Annean Station's carrying capacity has been estimated at 8,340 sheep on its 168,539 hectares. The halophyte pastures of Carnegie Land System were in good condition while those of Mileura Land System were in poor condition. The wandarrie pasture of the Belele Land System was in fair to poor condition. This system comnprises 34 per cent of Annean's area and is estimated as capable of presently carrying 2,900 stock.
The Prairie Naturalist Volume 15, No. 1. March 1983
The Prairie Naturalist Volume 15, No. 1. March 1983
The Prairie Naturalist
NUTRIENT POOL SIZE RELATIONS IN THE UNDERSTORY STRATA OF A NORTHERN GREAT PLAINS GALLERY FOREST ▪ K. T. Killingbeck
COMPARISON OF OLD FIELD SUCCESSION ON A TALLGRASS PRAIRIE AND A NEBRASKA SANDHILLS PRAIRIE ▪ M. L. Bomberger, S. L. Shields, A. T. Harrison and K. H. Keeler
MANIPULATION OF FLOOD MEADOW VEGETATION AND OBSERVATIONS ON SMALL MAMMAL POPULATIONS ▪ J. E. Cornely, C. M. Britton and F. A. Sneva
CANVASBACK INTRODUCTION IN WEST-CENTRAL MINNESOTA ▪ H. A. Doty
FORAGING BEHAVIOR AND WATER USE OF HORSES AND CATTLE IN THE WYOMING RED DESERT ▪ L. J. Krysl, G. E. Plumb, M. …
Forage Moisture Testers, George Turner, Doug Overhults
Forage Moisture Testers, George Turner, Doug Overhults
Kentucky Alfalfa and Stored Forage Conference
The quality of forage used for feed is affected by the moisture content at which it was harvested and stored. To guess moisture content from experience or by hand squeezing and wadding is not accurate enough for today's methods of putting up hay, haylage or silage.
There are several very accurate and rapid types of sophisticated moisture indicators used in various industries, but these are too complex and costly to be considered for portable use by farmers. Other smaller instruments are also available that do a less accurate but acceptable job of determining moisture content of forage. One of these …
Alfalfa Production And Marketing — Producer Story, Reeves Davie, Alfred Davie, Gene Davie
Alfalfa Production And Marketing — Producer Story, Reeves Davie, Alfred Davie, Gene Davie
Kentucky Alfalfa and Stored Forage Conference
Our decision to plant a hundred acres of alfalfa in the late summer of 1981 was not made hastily. Past experiences of others in the area who had grown alfalfa commercially, an economic study of the alfalfa hay situation and the declining prices of corn, wheat, and soybeans all had their affect on our decision. However, we did not anticipate the price of corn, wheat and soybeans sinking to the levels they did this past year of 1982.
An Economic Examination Of Kentucky's Potential For Alfalfa Production, W. Donald Shurley
An Economic Examination Of Kentucky's Potential For Alfalfa Production, W. Donald Shurley
Kentucky Alfalfa and Stored Forage Conference
In managing a farm successfully, a major decision faced by the farmer is the choice of enterprises and the level of production for each of the enterprises chosen. For each enterprise or combination of enterprises, an initial investment in land, buildings, and machinery is required. The enterprises chosen and the production levels of each enterprise must be sufficient to reward investments above their cost. Once the choice of enterprises is made and investment incurred, little flexibility exists in making changes among enterprises unless some investments are liquidated and new investments made.
Chemical Preservation Of Alfalfa Hay And Silage, Charles T. Dougherty, J. Kenneth Evans
Chemical Preservation Of Alfalfa Hay And Silage, Charles T. Dougherty, J. Kenneth Evans
Kentucky Alfalfa and Stored Forage Conference
A wide range of substances are being marketed throughout the forage world to enhance, preserve and otherwise modify hay and silage. Some of the products are ineffective, while the benefits of others depend on the correct application and some are used at rates far below that which is effective. Alfalfa can be made into high quality hay and silage without the use of additives if recommended practices are employed, however, when the use of best management practices is not enough, additives may make economic sense. Such is the case in N.W. Europe where the weather prevents haymaking, and the high …
Harvest Management, Harold Vaught
Harvest Management, Harold Vaught
Kentucky Alfalfa and Stored Forage Conference
Harvest management is not an easy topic to address. Every farm or field may present a different situation, thus, decisions must be made by the grower as to the harvest schedule he uses. Most everything I will discuss has research to back it up but I will not reference it. I must say that some of my comments have come from experience and observation over a period of many years.
Managing Leaf Spot Diseases Of Alfalfa, William C. Nesmith
Managing Leaf Spot Diseases Of Alfalfa, William C. Nesmith
Kentucky Alfalfa and Stored Forage Conference
Approximately 25-30 diseases attack and reduce the yield, quality or stand longevity of alfalfa in Kentucky. The largest number of these diseases are leaf spot. Generally, the leaf spots diseases are more important in reducing quality due to leaf loss than direct killing of plants. Some of the leaf spots are severe enough to warrant specific controls aimed directly at them while others are managed through more general practices.
Weed Management In Alfalfa, William W. Witt
Weed Management In Alfalfa, William W. Witt
Kentucky Alfalfa and Stored Forage Conference
Weeds compete with alfalfa for water, nutrients, light, and space. This competition can decrease yields, lower forage quality, increase disease and insect problems, create harvesting problems, and initiate or poison the animals which will consume the forage. Premature loss of alfalfa stands is usually the result of the interaction of the pest complex - diseases, insects, and weeds.
Kentucky's Ipm Program For Alfalfa, Chris M. Christensen
Kentucky's Ipm Program For Alfalfa, Chris M. Christensen
Kentucky Alfalfa and Stored Forage Conference
Integrated Pest Management (IPM) is a concept that encourages the use of a variety of strategies in the management of crop pests. It is very important to have an indepth understanding of the crop production system when implementing an IPM program. An IPM program is dynamic requiring a continual evaluation of the status of the crop, the associated pest complex, the effects of the pests and the biological deterrents to those pests. If a pest population gets "out of hand" and begins to cause economic damage, pest management techniques may need to be applied. These pest management measures may be …
Soil And Fertility Management, Lloyd W. Murdock
Soil And Fertility Management, Lloyd W. Murdock
Kentucky Alfalfa and Stored Forage Conference
Alfalfa is a high producing, labor intensive, high cost and high return crop. Therefore, it only makes sense not to limit its production or longevity by establishing it on unsuitable soil or by the use of unsound fertility practices. It is the aim of this paper to propose practices which will not limit the production of alfalfa, but, also allow it to be done as efficiently as possible with only the necessary inputs.
Kentucky Alfalfa Variety Testing Program, Roy E. Sigafus
Kentucky Alfalfa Variety Testing Program, Roy E. Sigafus
Kentucky Alfalfa and Stored Forage Conference
In the 1950's and 60's alfalfa variety trials were conducted by the Lexington staff at 5 to 7 locations. Trials are now limited to Lexington and Princeton, but numerous demonstration seedings are established by the Extension Service personnel throughout the state.
Establishment And Early Management Of Alfalfa Stands For Hay And Silage Production, J. Kenneth Evans, Charles T. Dougherty
Establishment And Early Management Of Alfalfa Stands For Hay And Silage Production, J. Kenneth Evans, Charles T. Dougherty
Kentucky Alfalfa and Stored Forage Conference
To achieve high levels of productivity and long-lived alfalfa stands, farmers must treat alfalfa as a crop and not as a pasture on the back forty. In this paper we present current recommendations for establishment and early management of alfalfa stands in Kentucky. See AGR-76, Alfalfa-The Queen of Forage Crops, and AGR-64, Establishing Forage Crops, for more detailed information.
Alfalfa In Kentucky — Situation And Challenge, Garry D. Lacefield
Alfalfa In Kentucky — Situation And Challenge, Garry D. Lacefield
Kentucky Alfalfa and Stored Forage Conference
Alfalfa is one of the most important forage crops in the United States. Of all commonly grown forages, it is among the highest in feeding value and has the highest yield potential of all adapted perennial forage legumes. Alfalfa is grown over a wide range of soil and climatic conditions and can play an important role in soil conservation. Alfalfa is a versatile crop which can be used as pasture, hay and silgage. As a result of its versatility, yield potential and quality, it can be used successfully in all livestock feeding programs.
Foreword [1983], Garry D. Lacefield
Foreword [1983], Garry D. Lacefield
Kentucky Alfalfa and Stored Forage Conference
This is the front matter of the proceedings.
Oilseed Agronomy, A G. Mckay
Oilseed Agronomy, A G. Mckay
Experimental Summaries - Plant Research
Seeding rates for Wesbrook 83MT56 Interstate rapeseed variety testing 83MT47 Fusilade on rapeseed 83MT57 Triazine resistant rapeseed 83MT55 Rapeseed windrowing - time of harvest 83MA9
Molybdenum Nutrition, M M. Riley
Molybdenum Nutrition, M M. Riley
Experimental Summaries - Plant Research
Field Trials 1. Molybdenum and Ammonium sulphate on wheat - 81N040. 2. Foliar applications of Molybdenum on wheat - 83TS4. 3. Foliar applications of Molybdenum on wheat - 83ME7. 4. Residual value of Molybdenum on an acid soil. 81M2. Residual value of Molybdenum on an acid soil - 81LG12. 6. Residual value of Molybdenum on an acid soil - 83ME82. 7. Molybdenum responses in wheat and lupins - 83ME10. Glasshouse Trials; 1. The response of wheat to Molybdenum on eleven acid sandy soils - 83GL1. 2. Leaching of Molybdenum - 83GL2.
Sulphur Nutrition Of Pastures. Potassium Nutrition Of High Rainfall Pastures On Deep Sands, J S. Yeates, M F. Clarke
Sulphur Nutrition Of Pastures. Potassium Nutrition Of High Rainfall Pastures On Deep Sands, J S. Yeates, M F. Clarke
Experimental Summaries - Plant Research
A. Sulphur - High Rainfall – 80AL1, 80AL4 (1980), 80AL4 B (established 1983). Sulphur rundown on heavy soils - 80BY1. Sources, rates, time of application of sulphur to pastures - 80AL1, 80AL4, 80AL4B. Sources, rates, time of application of sulphur to legume pastures – 80AL1, 80AL4, 80AL4B. Sulphur nutrition of pastures. 83PE36. B. Sulphur - Low Rainfall – 82AL9, 80JE16/17 82KA4. Sulphur on pastures - 80JE16/17, 82AL9, 82KA4. Sulphur on absorbing soils receiving no current S input – 80BY1. C. Potassium. Sources, rates, time of application of potassium on high rainfall deep sand pastures - 80AL3, 80AL6.
Summary Of Experimental Results 1982/83., J. Hamblin
Summary Of Experimental Results 1982/83., J. Hamblin
Experimental Summaries - Plant Research
82C22, 82C23 Wheat Production Trials, 82C24 Nitrogen flows from different legume species and varieties, 82C10 Lupins under sown with Harbinger, 82Cl9 The effect of Simazine on Harbinger Medic, 82C21 Pea variety trial, 82C23 The effect of green manuring on wheat yields.
1. Clover Scorch Screening, 2. Bluegreen Aphid Screening, 3. Root Rot Screening, 4. Medicago Murex, 5. Clover Establishment Techniques, 6. Salinity Effects On Irrigation Pastures, 7. Moisture Usage And Seed Production In Subterranean Clover., D. J. Gillespie
Experimental Summaries - Plant Research
Clover scorch screening, Bluegreen aphid screening, Root rot screening, Medicago murex, Clover establishment techniques, Salinity effects on irrigation pastures, Moisture usage and seed production in subterranean clover.
Studies On The Effects Of Nutrition And Tillage Systems On Cereal Root Diseases, R F. Brennan
Studies On The Effects Of Nutrition And Tillage Systems On Cereal Root Diseases, R F. Brennan
Experimental Summaries - Plant Research
1. Split Applications of Nitrogen and Take-all 83ES33. 2. Nitrogen and Phosphorus Rates and Take-all 83ES41. 3. Nitrogen and Phosphorus Rates and Take-all 83ES42. 4. Nitrogen and Phosphorus Rates and Take-all 83ES43. 5. Micronutrients (Cu, Zn) and Take-all 83ES39. 6. Micronutrients (Cu, Zn) and Take-all 83ES40. 7. Cu Residual on Wheat and Take-all 67E8. 8. Cu Residual on Wheat and Take-all 67E9. 9. Effects of Sources of Nitrogen on Take-all 77E4. 10. Root Rot Survey: West of Gibson. 11. Root Rot Survey: East of Gibson.
Seed Ecology Of Weeds. Calotropis/Buffel Grass Interactions, A H. Cheam
Seed Ecology Of Weeds. Calotropis/Buffel Grass Interactions, A H. Cheam
Experimental Summaries - Plant Research
1. Emergence of weed seedlings from different soil depths. 82MT49 Mt Barker Research Station. 83MT4 Mt Barker Research Station. 82NR12 Northam Research Station. 83NR2 Northam Research Station. 82C37 Chapman Research Station. 83C3 Chapman Research Station. 2. Longevity of buried weed seeds. 82MT50 Mt Barker Research Station. 83MT5 Mt Barker Research Station. 82NR13 Northam Research Station. 83NR3 Northam Research Station. 82C38 Chapman Research Station. 83C4 Chapman Research Station. 3. Emergence of weed seedlings in relation to soil type and cultivation 82PE32 South Perth. 4. Changes in the number of viable dock seeds in soil under different soil surface treatments 83V2 Vasse …
Phosphorus Nutrition Of High Rainfall Pastures - Peel Harvey Estuarine System Study (Phase Ii) And Related Phosphorus Work, D M. Deeley, J S. Yeates, B. Barker, M F. Clarke
Phosphorus Nutrition Of High Rainfall Pastures - Peel Harvey Estuarine System Study (Phase Ii) And Related Phosphorus Work, D M. Deeley, J S. Yeates, B. Barker, M F. Clarke
Experimental Summaries - Plant Research
A. Sources, rates, time of application of phosphorus on high rainfall pastures. 80AL2, 80AL5, 81AL5, 81AL6, 81KE2, 81MA4, 82AL10, 82HA31, 82HA32, 83HA26, 83HA27. B. Soil test calibration curve trials on Bassendean sands. 82HA20, 82HA21, 82HA22, 82HA23, 82HA24, 82HA25, 82HA26, 82HA27, 82HA28, 82HA29, 82HA30. C. Soil test calibration curve trials on Coolup sands. 83HA20, 83HA21, 83HA22, 83HA23, 83HA24, 83HA25. D. Phosphorus rundown. 82HA14, 82HA15, 82HA16, 82HA18. NOTE: Summary is in two parts. 1. Peel Harvey catchment program (Deeley, Barker). 2. General program on high rainfall sandy soils (Yeates, Clarke). Summary of Experimental Work. General Aims. The work summarized here was commenced …
Low Rainfall Pasture Project, M. Ewing
Low Rainfall Pasture Project, M. Ewing
Experimental Summaries - Plant Research
1. Variety Comparisons - rows and small plots. a). Rows 83M54, 83M55, 83M57 and 83ME86. b). Small plots 83M36, 83ME58 and 83ME59. 2. Variety Comparisons - large plots. a). Old sites - 82ME47-51, 82LG32, 82N31, 82TS32. b). New site - 82ME62. 3. Medic rhizobial trials - 83M43, 83M47, 83M46. 4. Pasture establishment trials - 83M37, 83TS40, 83WH39. 5. Lupin - wheat rotation trials - 82ME52, 82ME53. 6. Pasture wheat rotation trials - 82N044, 82M47, 82WH39.