Digital Commons Network^™

Regional Trials At Esperance, M Da Bolland

Experimental Summaries - Plant Research

Trials on Salmon Gums Research Station. The trials on the research station are aimed at making the maximum use of the rainfall for cropping. On the heavy Kumarl soils the trials include fallow trials, furrow seeding trials, seeding rate and time of seeding trials, and trials assessing methods of getting the crops in as early as possible; these trials being repeated on fallow and ley Kumarl soil. On the sandy surfaced soils the trials assess methods of sowing the crops as early as possible, and checking if there are different nitrogen requirements for cereals sown by minimum tillage or mechanical …

Lupin Agronomy / Field Pea Agronomy / Alternative Grain Legume Comparisons / Cereal/Legume Mixtures, G H. Walton

Experimental Summaries - Plant Research

1. Lupin agronomy. 1.1 Crop density x weed population – 80GE7, 80GE8, 80GE37, 80GE38, 80GE39, 80TS7, 80TS8. 1.2 Lupin variety x density – 80BA36, 80C25, 80MT34. 1 .3 Variety x density x time of planting – 80MO6, 80MA5. 2. Field pea agronomy. 2 .1 Variety x density – 80NA13. 3. Alternative grain legume comparisons. 3.1 Soil fertility improvement – 79BR2. 3.2 Grain legume comparison – 80BR6, 80ES18, 80ES19, 80GE9, 80JE1, 80JE2, 80NA12, 80NO3. 3.3 Faba bean potential yield – 80MT2. 4. Cereal/legume mixtures. 4.1 Cereal/lupin mix for hay and grain – 80AL11, 80BR4, 4.2 Oats/pea mix for hay and grain …

1979 Trial - Doublegee Seed Dormancy, Lupins Weed Control, Doublegee Control In Pasture, D J. Gilbey

Experimental Summaries - Plant Research

74C7 Doublegee seed longevity X cultivation, Chapman Research Station 75WH65 Doublegee seed longevity X cultivation, Wongan Hills Research Station 75WH66 Doublegee seed longevity X depth, Wongan Hills Research Station 76C9 Doublegee seed longevity X depth, Chapman Research Station 76KA8 Doublegee seed longevity X depth, Katanning Townsite 74A4 Effect of double cropping, shallow dry cultivation and spraying pasture on viable doublegee seed, Avondale Research Station 79C24 Lupin tolerance to herbicides - Illyarrie, Chapman Research Station 79C25 Lupin tolerance to herbicides – Unicrop, Chapman Research Station 79C26 Lupin tolerance to herbicides – Ultra, Chapman Research Station 79C27 Lupin tolerance to herbicides – …

Optimal Foraging In A Uniform Habitat: The Search Mechanism Of The Green Lacewing, Alan B. Bond

Alan Bond Publications

The effects of food deprivation and prey contact on the components of searching behavior in larval green lacewings (Chrysopa carnea Stephens) were examined to test the applicability of optimal foraging theory to predation in a uniform habitat. Variation in foraging intensity was primarily the result of changes in the meander. Modulation of the response to prey contact with increasing deprivation involved changes in the velocity and the response persistence and suggested the occurrence of adaptation to inferred differences in the spatial distribution of the prey. The ratio of giving-up times at different levels of deprivation was in accordance with …

The Relationship Of Food Conversion Efficiency And Growth Potential In Juvenile Mosquitofish, Gambusia Affinis, Joseph J. Cech Jr., Michael J. Massingill, Wayne A. Wurtsbaugh

Watershed Sciences Faculty Publications

New information concerning respiratory metabolic rates of juvenile mosquitofish (i = 915 mg 02 kg-1 h-1 at 20° C) was applied to existing data on mosquitofish respiration and combined with findings on growth and food consumption rates to determine percentages of net ingested energy used for growth and respiration over a 10- 35° C temperature range. The energy percentage used by mosquitofish for respiration was minimized at 25-30° C while that used for growth (= food conversion efficiency) was maximized at the same temperature. A calculated growth potential index, derived from an overall energy balance equation, was also maximized at …

A Limnological Study Of 43 Selected Maine Lakes, Derrill J. Cowing, Matthew Scott

Maine Collection

A Limnological Study of 43 Selected Maine Lakes

by Derrill J. Cowing and Matthew Scott

U.S. Geological Survey : Water-Resources Investigations 80-69

Prepared in cooperation with the Maine Department of Environmental Protection

U.S. Geological Survey, 26 Ganneston Drive, August, Maine 04330

Bibliography Of J. E. Weaver

Papers of John E. Weaver (1884–1956)

1914-1963

(8 pages, typescript)

Ground Driven Powered Tillage, Larry G. Wells, E. M. Smith, D. E. Hammett, H. J. Thompson Jr.

Biosystems and Agricultural Engineering Faculty Publications

A ground driven powered tillage device is described which utilizes a passive rolling coulter propelled through the soil by a prime mover. The reaction torque imparted by the soil to the coulter is delivered via a torque transfer unit to a powered tillage blade. The tillage blade rotates counter to the direction of the passive rolling coulter and prepares a tilled furrow of some predetermined depth for seed placement and coverage.

Analysis is presented in which the torque developed by a passive rolling coulter engaging the soil is predicted. A relationship is presented for determining the velocity ratio between the …

Plant Viruses, G D. Mclean, T. N. Khan, J Sandow

Experimental Summaries - Plant Research

1. Barley Yellow Dwarf Virus: G.D. McLean, T.N. Khan, J. Sandow. 2. Clover Viruses: G.D. McLean, J. Sandow. BYDV: Survey of incidence - Locations: Esperance (80ES53) sown June 27, 1980 Williams (80NA35) sown June 19, 1980 Kojonup (80KA28) sown June 19, 1980 Bokerup (80MA11) sown July 8, 1980 Jerramungup (80JE14) sown June 26, 1980 Albany (80AL30) sown July 3, 1980 Busselton (80BU3) sown July 8, 1980 Bridgetown (80BR19) sown June s, 1980 Northam (80N026) sown June 16, 1980 All these plots were located at the cultivar variety trial sites. Sites varied considerably in BYDV incidence as well as in rate …

(1) Powdery Mildew Control Of Grapes With Fungicides. (2) Black Spot And Downy Mildew Of Processing Peas: 80al32. (3) Facial Eczema Investigation., A Bokor

Experimental Summaries - Plant Research

Powdery mildew control of grapes with fungicides. Location: Mount Barker Research Station. Black spot and downy mildew of processing peas - 80AL32. Facial eczema investigation. Facial eczema is a recognised myco-toxic disease of grazing stock in New Zealand. It is caused by a fungus Pithomyces chartarum growing on dead litter part of the pasture. The disease has become recognised as a risk to sheep in the Albany Region following reported losses in 1978. A pasture paddock at Cape Riche was sampled weekly by the Animal Division to determine fluctuations in spore numbers of P. chartarum. Comments: The fungus could readily …

Sulphur Nutrition Of Pastures And Crops Phosphorus And Potassium Nutrition Of Pastures On Deep Sands In The High Rainfall Areas, J S. Yeates, M F. Clarke

Experimental Summaries - Plant Research

CONTENTS A. SULPHUR 1. Sources, rates, time of application of sulphur to legume pastures (high rainfall) - 80AL1, 80AL4, 80MA1, 80KE1. 2. Sulphur soil test on pastures (high rainfall) - 80AL12, 80AL13, 80AL14, 80BY2, 80KE2. 3. Sulphur rundown on sulphur absorbing soils of the high rainfall areas - 80BY1. 4. Sulphur requirements of pasture in low rainfall areas - 80JE17, 80M020. 5. Residual value of 1979 applied sulphur. Rates of fine gypsum applied 1980 - 79AL2, 79AL18, 79AL22, 79AL23, 79AL25, 79AL41, 78BA8 B, 79BY3, 79BY4, 79HA2, 79KE3, 79KE7, 79M020. 6. Sulphur requirements of wheat - 80JE16, 80M09. B. PHOSPHORUS 7. …

General Phosphorus Trials, R J. Lunt, J. W. Bowden

Experimental Summaries - Plant Research

The trial programme of past years was considerably reduced in size because of the absence of J.W. Bowden (Research Officer). Further, extensive drought conditions in the W.A. agricultural areas wiped out several trials.

INDEX Super x stocking rate trial 66M30. Maintenance P x S trials 65Al, 65C5, 65N5, 69WH15. Residual Value of Phosphorus 75LG26, 77NA4, 78BA7, 79N05, 79JE8 & 9.

Times and Methods of Application 80M7, 8OM6, 80WH9, 80MO7.

1. Doublegee Seed Dormancy. 2. Lupins - Weed Control. 3. Lupins - Minimum Tillage Weed Control. 4. Doublegee Control In Pasture. 5. Crabgrass Control In Seedling In Lucerne. 6. Crabgrass Control In Vines., D J. Gilbey

Experimental Summaries - Plant Research

Doublegee seed longevity x cultivation - 75WH65. Doublegee seed longevity x depth - 76C9, 76KA8, 75WH66. Lupin variety tolerance to herbicides - 80C28-33, 80GE45-50, 80MO24-29, 80TS33-38. Tolerance of yandee lupins to herbicides - 80A38. Post emergence weed control in lupins - 80M034. Sprayseed - simazine combinations for minimum tillage lupins – 80MO21, 80TS29, 80GE40. Doublegee control in pasture – 80MO33, 80NO36. Crabgrass control in seedling lucerne - 80KE7. Crabgrass control in vines - 80SR1.

Evaluation Of Late Maturing Clover Cultivars. Woogenellup Alternative Clovers. Selection For Bluegreen Aphid Resistance. Root Rot Resistance., D. J. Gillespie

Experimental Summaries - Plant Research

Evaluation of Late Maturing Clover Cultivars. Bacchus Marsh, Clare, Cyprus, Daliak, Denmark Dinninup, Dwalganup, Esperance, Geraldton, Harbinger, Karridale, Larisa, Meteora, Mt. Barker, Nangeela, Northam, Northcliffe, Nungarin, Pitman serradella, Plantagenet, Seaton Park, Tallarook, Tornfield, Trikkala, Yarloop, Woogenellup,

1. Evaluation of late maturing clover cultivars. Three trials established in 1977 and due to terminate in 1979 were continued into 1980 to obtain further data on the performance of the late yanninicum Meteora {39327YB). A full report on the performance of this variety in these trials was prepared for the Herbage Plant Liaison Committee and is reproduced below. Table 1 - Residual Hard …

Potassium, W. J. Cox

Experimental Summaries - Plant Research

80BR1 - Rates of Potassium on Pasture. 80BR2 - Rates of Potassium on Pasture. 80TS4 - Rates of Potassium on Wheat. 80BR5 - Rates of Potassium on Pasture.

Pasture Manipulation - Grass Control The Year Prior To Cropping, C W. Thorn

Experimental Summaries - Plant Research

Pasture manipulation - grass control the year prior to cropping. Aim 1. To measure the effects of various grass control treatments on pasture production and composition in the spraying year. 2. To measure the effects of grass control on wheat. Trial – 80MO41, 80MO40, 80AB2.

Legume Diseases, P Mcr Wood

Experimental Summaries - Plant Research

Lupin root disorder. Resistance to lupins to Phomopsis leptostromiformis (Fungal ratings by P. McR. Wood and F.M. O'Donnell, data compiled by J. Hamblin, Plant Production Division) Phomopsis levels on any particular genotype are influenced by environment. Therefore material selected for Phomopsis resistance is done so on its being better than average over all sites. Data for the Plant Breeders' S2-l trial at Avondale (ARS), Badgingarra (BRS), Chapman (CRS), Esperance (ERS) and Mt. Barker (MTRS) are shown in Table 3.

Influence Of Planting System On Surface Soil, Physical Conditions And Soil Water Relations, D Tennant

Experimental Summaries - Plant Research

Influence of planting system on surface soil, physical conditions and soil water relations. The availability of soil water for crop use can this way be influenced by planting system. Various aspects of soil water relations were examined in varying detail at three sites - Wongan Hills, Avondale and Merredin, over the 1979 and 1980 growing seasons. Some of this soil water data are presented here. The Department of Agriculture initiated a programme in 1977 to investigate and compare crop performance under several planting systems. This project was part of this programme and had as its objectives: 1. Measurement of soil …

Weed Control On Roaded Catchments, P A. Rutherford

Experimental Summaries - Plant Research

Weed control on roaded catchments - 80NA46, 80NA45. Control of "Loop-grass" - Westralian Sands Pty Ltd Capel. Alexander Morrison National Park - Coorow. 80NA50 - Chemical firebreak evaluation - long term - 80A46.

Scald, Blotch And Powdery Mildew General Comments And Highlights, T. N. Khan

Experimental Summaries - Plant Research

Locations - Avondale, Badgingarra, Mount Barker I. General Comments and Highlights. II. SCALD: Crop Loss Assessment - 80BA25, 80MT24. III. SCALD: Field Inoculation - 80A28. 80BA26. IV. SCALD: Genotype Reaction in Single Plants and Hill Plots - 80MT26. V. SCALD: Epidemic in Segregating Populations - 80A29, , 80MT25. VI. NET BLOTCH: Yield Loss Assessment - (Net Type) - 80A30, 80BA30. VII. NET BLOTCH: Field Inoculation (Net Type) - 80A31, 80BA31. VIII. 'SPOT TYPE' NET BLOTCH: Yield Losses - 80C24. IX. POWDERY MILDEW: Yield Losses - 80AL33.

Nitrogenous Fertilisers For Cereals, Rape And Linseed. Results From 1980 Trials., M. G. Mason

Experimental Summaries - Plant Research

Effect of stubble treatment on nitrogen fertiliser requirement – 78C3, 78M2, 78WH3. Rate of N on wheat - conventional vs. Direct drilling – 80A1, 80Cl, 80N1. Rate and time of application of nitrogen on wheat - CONVENTIONAL VS. DIRECT DRILLING – 80E1. Rate and time of application of nitrogen on rape - conventional vs. Direct drill – 80MT1. Rates of nitrogen on wheat on heavy land – 80GE1, 80GE2, 80MO2. Rates of nitrogen on wheat - soil test – 80BR3, 80ES14. 80KA2, 80NO2, 80TS1. Rates of nitrogen on wheat – 80LG26, 80ME2. Rates and sources of N and P for …

Long Term Roatation Trials. Lupins: Wheat Rotation. Continuous Cropping With Nitrogenous Fertiliser., I Rowland

Experimental Summaries - Plant Research

Long term rotation trials - 66M29, 67C13, 67N4, 68E5, 68SG5, 73SG16. Lupins: whet rotation - 79GE36, 79GE37. Continuous cropping with nitrogenous fertiliser - 80NA6.

Wheat Potential Yield Trials., M. W. Perry

Experimental Summaries - Plant Research

Contents: 1. Wheat Potential Yield Trials. 80BA4 - Cooperative project with R.N. Weir. 80KA7, 8OWH8 D. Tennant and A.G.P. Brown. Detailed summary issued as a separate report. 2. Yield Analysis of Historically Important Wheats 80WH6, 80M4*, 80C2, 80N4* 80WH7, 80M5*, 80A3, 80SG20. 3. Cereal Seeding Rates for the Eastern Wheatbelt. 80ME5*, 80M6*. 4. Intensive Wheat Production Trials (Seeding Rates x Cycocel x Nitrogen xSeptoria Control) 80M038, 80N042, 80MT4, 80N041, 80KA34. 5. Alternative Crop Trials - High Rainfall 80MA7, 80MA8. 6. Regenerating sandplain Lupin Rotation Trials 79GE38/SOGE12 , 79GE42/80GE13. 7. Miscellaneous Trials i) Early Seeding of Late Maturing Varieties - 80MT5. …

Trace Element Nutrition, J. W. Gartrell, R. F. Brennan

Experimental Summaries - Plant Research

Field trials. 1. Long term copper residual page 1. 2. Effect of granule size and cultivations on copper availability – 79N23 page 2. 3. Copper, zinc residual for sub-clover – 78MO26 page 5. 4. Copper, zinc residual for sub-clover on peaty sand – 75AL24 page 6. 5. Effect of copper fertilizer on wheat yield – 80NO27 page 7. 6. Ammonium sulphate/molybdenum on wheat – 80NO28 page 8. 7. Mo, lime, mg on sub-clover – 80NO29 page 9. 8. Zinc residual with high analysis N.P. Fertilizer for wheat – 80NO31 page 10. 9. Zinc, sulphur, copper residual with high analysis N.P. …

Iowa Academy Of Science Leadership Directory And Membership Roster, 1980-81, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Board of Directors ... 2
Section Chairs ... 4
Section Vice Chairs ... 7
Committees ... 9
Past Presidents ... 21
Award Recipients ... 22
Membership Roster ... 25
Constitution, Article III ... 38

Remnant Prairie In Faulkner County, Arkansas?, Donald E. Culwell

Journal of the Arkansas Academy of Science

No abstract provided.

Effects Of Organic Compounds On Amphibian Reproduction, Wesley J. Birge, Jeffrey A. Black, Robert A. Kuehne

KWRRI Research Reports

Aquatic toxicity tests were conducted with atrazine, carbon tetrachloride, chloroform, methylene chloride, trisodium nitrilotriacetic acid (NTA), and phenol. Each compound was administered to developmental stages of three to five amphibian species. Exposure was initiated at fertilization and maintained through 4 days posthatching. Test responses included lethality and teratogenesis. Different amphibian species exhibited varying degrees of tolerance to the selected compounds. Greatest tolerance usually was observed for the more broadly adapted semi-aquatic and terrestrial species (e.g., Bufo americanus, Bufo fowleri). The more sensitive amphibians usually included those species which normally are restricted to aquatic or moist habitats (e.g., Rana …

The Effects Of Fin Clipping And Tagging On Growth And Behavior Of The Largemouth Bass (Micropterus Salmoides), Daniel M. Daley

Masters Theses

One hundred largemouth bass, ranging in size from 148mm to 385mm, were equally divided into four treatment groups (control, tag only, tag and left pectoral fin clip, and tag and all paired fins clipped) , and placed into a 5.56 hectare pond on 22 May and 25 May 1979. Upon recovery on 28 September 1979, the increase in length from the time of most recent annulus formation was found to be significantly greater in Age I control fish (x̄ = 125mm) than in fish of the same age in the other three treatment groups (x̄ = 110mm, 103mm, and 106mm, …

Repopulation Of Fishes In Riley Creek, Coles County, Illinois Following Nitrogen Fertilizer Pollution, Kim James Carney

Masters Theses

The repopulation of stream fishes was studied from 17 May 1979 to 25 October 1979 following a major kill (100% mortality) caused by nitrogen fertilizer pollution in Riley Creek, Coles County, Illinois. The extent of recovery was determined by comparing post-kill collections with pre-kill survey data that was collected on 25 October 1978.

Repopulation began six days after the abatement of the pollution source. It is suggested that the initial source of repopulation was from the nearest undamaged tributary. The first three reinhabitants in order of appearence were: stonerollers (Campostoma anomalum); creek chubs (Semotilus atromaculatus); and …

A Guide To The Threatened And Endangered Vascular Plants Of The Lake Mead National Recreation Area, James S. Holland, Wesley E. Niles, Charles L. Douglas, Dennis R. Schramm

Publications (WR)

This illustrated guide was prepared to provide the botanical community, land managers, and other interested persons with a reference that describes and locates the twelve plant taxa currently being considered by the Fish and Wildlife Service for threatened or endangered status in or around the Lake Mead National Recreation Area. The guide is intended to assist managers of government agencies in determining the presence of these species and in defining management programs for their protection. The guide should be consulted prior to any construction project. If a potential conflict is identified, an onsite evaluation should be conducted early in the …