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Full-Text Articles in Life Sciences

Atlas Of Wetlands In The Principal Coal Surface Mining Region Of Western Kentucky, William J. Mitsch, Jan R. Taylor, Kimberly B. Benson, Paul L. Hill Jr. Jul 1983

Atlas Of Wetlands In The Principal Coal Surface Mining Region Of Western Kentucky, William J. Mitsch, Jan R. Taylor, Kimberly B. Benson, Paul L. Hill Jr.

KWRRI Research Reports

This atlas contains maps of wetlands and surface mining activity in the Western Kentucky Coal Field, and focuses on a 3960 km2 (1530 mi2) region where approximately 90 percent of surface mining in the Coal field occures. Some present and potential competition exists between surface coal mining and wetland protection. A wetland classification, based on the recent FWS classification, includes six types of palustrine systems and one each of riverine and laucstrine systems. Wetlands and surface mines are located on twenty-seven 7.5 minute USGS quadrangles that define the study region. A total of 460 km2 (177 …


Effects Of Surface Application Of Dairy Manure On The Infiltration Rate And Quality Of Surface Runoff, Joseph L. Taraba, I. J. Ross, John D. Bottom, Bill J. Barfield Jun 1983

Effects Of Surface Application Of Dairy Manure On The Infiltration Rate And Quality Of Surface Runoff, Joseph L. Taraba, I. J. Ross, John D. Bottom, Bill J. Barfield

KWRRI Research Reports

Dairy manure was surface spread on 12 ft x 12 ft plots on an established fescue pasture in the summer and fall of 1981 and 1982. The soil was a Maury silt loam. A simulated rainfall was applied to plots to test the effects of nitrogen loading rate (75, 150, and 300 #N/acre) time delay between manure application and the simulated rainfall events (0, 3, 6, 24, 48, 96 hours and a 120 hour test repeated on 0 hr plot with 300 #N/acre), and type manure (semi-solid - 1981 and liquid - 1982) on the concentrations of pollutants in the …


Annean Station Management Plan, A A. Mitchell May 1983

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.


Forage Moisture Testers, George Turner, Doug Overhults Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

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 Feb 1983

Foreword [1983], Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

This is the front matter of the proceedings.


Evaluation Of Annual Grass Control 1982 1983, D Nicolas Jan 1983

Evaluation Of Annual Grass Control 1982 1983, D Nicolas

Experimental Summaries - Plant Research

Trial 82NA29

History.

Design.

Methods.

Results and discussion.


Cercospora Disease Of Sub-Clover, M J. Barbetti Jan 1983

Cercospora Disease Of Sub-Clover, M J. Barbetti

Experimental Summaries - Plant Research

Cercospora disease of sub-clover. Fungicide control of cercospora disease on sub-clover. Aim: To determine the effectiveness of various times and rates of application of benomyl for control of Cercospora disease (Cercospora zebrina) in sub-clover cv. Esperance. Locality: Bibby Springs (83MO4). Fungicide control of cercospora disease on sub-clover. Aim: To determine the effectiveness of various fungicides for control of Cercospora disease (Cercospora zebrina) in sub-clover cv. Esperance. Locality: Bibby Springs (83M03). Role of seed contamination and infection in cercospora disease on sub-clover. Aim: To determine the role of Cercospora zebrina seed contamination and infection in spreading Cercospora disease of sub-clover. Locality: …


Oilseed Agronomy, A G. Mckay Jan 1983

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


Annual Medics For The Kalgoorlie Region And Adjacent Eastern Rangeland Zones, G Gintzburger Jan 1983

Annual Medics For The Kalgoorlie Region And Adjacent Eastern Rangeland Zones, G Gintzburger

Experimental Summaries - Plant Research

Species selection and establishment methods Extensive overgrazing and burning of the dominant winter rainfall Goldfields pastoral zones have left large areas degraded with a poor annual vegetation cover of nearly no grazing value. Thus, more grazing pressure is exerted on shrubs and small trees accelerating the desertification process. Shrubs and trees are the main stabilising agent left in a rangeland plant community when alI annuals have been grazed out. In order to upgrade or regenerate some of these areas, conventional methods of grazing prohibition or deferred grazing can be used but often, improvement obtained are slow. It is hypothesized that …


Molybdenum Nutrition, M M. Riley Jan 1983

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.


Soil Acidity - High Rainfall Pastures, J S. Yeates, D. A. Mcghie, D A. Tooke, M. F. Clarke Jan 1983

Soil Acidity - High Rainfall Pastures, J S. Yeates, D. A. Mcghie, D A. Tooke, M. F. Clarke

Experimental Summaries - Plant Research

A. Lime on old land pastures. 80BU13, 80BU14, 80BU15, 80BU16, 80BU17, 80BY7, 80BY16, 81AL10, 81AL11, 8IAL12, 81AL13, 81AL14, 81AL15, 81AL16, 81BU18, 81BY15, 81BY16, 81BY17, 81BY18, 81BY19, 81BY24, 81BY25, 81BY16, 81MA12, 81W9, 81Wl0, 81Wll, 82AL2, 82AL3, 82AL4, 82ALS, 82AL6, 82ALSS, 82BU6, 82BU7, 82BU8, 82BY37, 82HA35, 82HA36, 82HA38, 82MA20, 82PE1, 83AL7, 83AL8, 83AL9, 83AL10, 83AL11, 83AL12, 83AL13, 83AL14, 83BU20, 83BU24, 83BU25, 83BU26, 83BY29, 83HA19, 83HA40, 83HA41.

B. Lime on new land pastures 82AL7, 82AL8.


Sulphur Nutrition Of Pastures. Potassium Nutrition Of High Rainfall Pastures On Deep Sands, J S. Yeates, M F. Clarke Jan 1983

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 Jan 1983

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 Jan 1983

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.


Pasture Trials Of Esperance, M D. Bolland Jan 1983

Pasture Trials Of Esperance, M D. Bolland

Experimental Summaries - Plant Research

(82ES55) - Serradella Co X N trial. R. Burchell, Myrup. Aim: To determine whether Co or low winter temperatures limit the growth of serradella in winter months. (83ES46) - Serradella N trial. High School block, Neribup. Aim: To test whether dry matter production of serradella and subterranean clover are limited by symbiotic nitrogen fixation in mid winter. (82ES46) - T brachycalycinum burr burial trial. J. Royle, Condingup. Aim: To determine the importance of burr burial for T. brachycalycinum for the formation of burrs and seed.


Studies On The Effects Of Nutrition And Tillage Systems On Cereal Root Diseases, R F. Brennan Jan 1983

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.


Sources Of Phosphate Trials. Miscellaneous Trials, J W. Bowden, R J. Lunt, M Baker Jan 1983

Sources Of Phosphate Trials. Miscellaneous Trials, J W. Bowden, R J. Lunt, M Baker

Experimental Summaries - Plant Research

I. Sources of Phosphate Trials. Cropping Trials: (80BA6) - Deep sand, Badgingarra, Lupins. (77WH2) - Gravel, old land, WHRS, Wheat. (76WH9) - WLS, new land, WHRS, Wheat (1982). (76WH10) - WLS, young land, WHRS Wheat (1982). (77MT2) - Loamy gravel, old land, Mount Barker Oats. Pasture trials: (77MT1) - Loamy gravel, new land, Mount Barker. (77E1) - Sandy gravel, new land, Esperance. (77E4) – [78E4?] Sandy gravel, old land, Esperance. II. Miscellaneous Trials Long term trials. 66M30 - Super x stocking rate at Merredin. 48M/149 EX - Residual super trial at Merredin. 65A1, 65C5 and 69WH15 - Maintenance P x …


Chemical Efficacy Trials, E Carter Jan 1983

Chemical Efficacy Trials, E Carter

Experimental Summaries - Plant Research

Please find attached summaries for the following six chemical efficacy trials:- 83PE51 - Control of powdery scab of potatoes. 83MD7 - Control of early blight of tomatoes. 83MD11 - Control of sclerotinia in lettuce. 83MD12 - Control of secondary black rot in cabbage. 83MD13 - Control of tuber-borne Rhizoctonia solari of potatoes. 83MD14 - Control of downy mildew of onions. The following trial has not yet been harvested:- 83MD15 - Chemical control of onion smudge.


Seed Ecology Of Weeds. Calotropis/Buffel Grass Interactions, A H. Cheam Jan 1983

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 …