Oceanography and Atmospheric Sciences and Meteorology Commons^™

Crop Tolerance To Herbicides., D. Bowran

Experimental Summaries - Plant Research

1. Tolerance of New Cereal Varieties to Current Herbicides EX 5506 Trial Nos: 90AL41, 90EC36, 90EB45, 90KA130, 90M85, 90NA100

2. Tolerance of Current Cereal Varieties to New Herbicides EX 5506 Trial Nos: 90M86, 90EC35, 90N74

3. Metribuzin Tolerance of Cereal Varieties EX 5507 Trial Nos: 90EC37

4. Lupin Tolerance to Herbicides EX 5508 Trial Nos: 90EC34, 90EB44

5. Pea Tolerance to Herbicides EX 5509 Trial Nos: 90KA131, 89KA64

6. Pasture Legume Tolerance to Herbicides EX 64522 Trial Nos: 90KA132,

Long-Term Rotation Trials., I. Rowland, W. Hawkins

Experimental Summaries - Plant Research

Trial 66M29

Location: Merredin Research Station.

An old land site, cleared in 1909. First sown to Cyprus Barrel medic in 1955, grazed and topdressed. Cropped, 1962 and 1964. Medic resown in 1965.

Trial 67C13

Location: Chapman Research Station

An old land site, cleared in 1903. Sown to Dwalganup sub clover in 1964, topdressed each year until the start of the trial in 1967. In 1981 to 83 all plots were reseeded with Northam at 20 kg/ha. In 1988 rotations were altered to allow inclusion of grain lupins, the following changes were made:

1. The 4 plots of 2 crop :2 …

Seeding Rate For Lupins For The South Coast., M. Seymour

Experimental Summaries - Plant Research

Trial 90ES1, 90ES2, 90ES3, 90ES4, 90E5

Lupin seed rate x variety.

Location: Kendells Rd Scaddan, Condingup, Mt Ridley.

To evaluate the response of lupin to a range of plant densities when grown in high rainfall/long growing season environments.

Trial 90SG5, 90SG6

Lupin seed rate x variety.

Location: Salmon Gums Research Station.

To evaluate the response of lupin to a range of plant densities.

Trial 90KO1

Lupin seed rate x variety

Location: South Stirlings.

To evaluate the response of lupin to a range of plant densities when grown in high/long growing season environments.

Use Of Soil Water Measurements To Assist Crop Management In Low Rainfall Areas., S. Mckeague, M. Perry, D. Tennant

Experimental Summaries - Plant Research

Trial 90M9

Trial summary.

Location: Merredin Research Station.

90M9 was established as part of the long term monitoring system to obtain base information on water use from several different soils. A simple rotation experiment was established in T3 on the Merredin Research Station.

Trial 89ME32

Rowspacing summary.

Location: Merredin Research Station.

89ME32 was monitored as part of the long term monitoring system. Previous to 1990 two years of continued measurements had been done on the same soil type. Located on the CSIRO lease block above the Merredin Research Station on Crook's property.

Trial 87M71

Heavyload rowspacing summary.

Location: Merredin Research …

Murex Medic Field Evaluation., D. J. Gillespie, D. R. Mcclements, D. S. Francis

Experimental Summaries - Plant Research

Trials: 90GE113, 90MO62, 90WH87, 90ME72, 90NO115, 90A24, 90AB17, 90AL35

Locations: Geraldton, New Norcia, Wongan Hills, Merredin, Southern Brook, Avondale, Katanning, Tenderden.

The selection SEP29.1 was outstanding for both dry matter production and seed yield over a wide range of sites varying in both rainfall and soil type. On the basis of these trials, six lines have been selected for further evaluation in 1991.

They are: SEP29.1 SEP26.2.7 GRC69 GRC87.1 87F01.28 87FB2.36

Trials 90A25 and 90NO116

Redlegged earthmite field experiments.

Very low levels of redlegged earthmite and only minor damage to test varieties was recorded in this trial. Damage ratings were …

Systems For Early Sowing Of Wheat In Low Rainfall Zones., Nicole Kerr, Glenn Adam

Experimental Summaries - Plant Research

Aims:

(i) use available climatic data to determine when breaks are likely to occur, and assess the risk of crop failure from 'false breaks'.

(ii) determine optimum methods of early crop establishment on a number of soil types, particularly massive earth soils.

(iii) determine the yield advantages of early planting of cereals, and sowing date * variety interactions. (iv) increase adoption of early sowing technology throughout the north-eastern wheatbelt.

Trial 90GE7, 90GE8, 90NM1 and 90GE10

Time of sowing * variety trials.

Location: Balla, North Mullewa and Morawa.

All of the trials the following design: 3 sowing dates (mid May, late …

Potassium Nutrition Of Pastures On The Sandplain Soils Of Western Australia., N. K. Edwards

Experimental Summaries - Plant Research

Aims: Determine the factors affecting the fate of native and applied potassium on sandplain soils.
Define current and residual response curve parameters for potassium applications.
Develop recommendations for the economic management of soil potassium levels.

Trial 88BA46

Maintenance application rates of potassium on sandplain soils.

Location: Badgingarra Research Station.

Fertilizer: Pastures and L. cosentinii - 200 kg/ha Super topdressed, wheat - 100 kg/ha Super topdressed, 120 kg/ha Agras No 1 drilled, lupins - 240 kg/ha Super Mn drilled. Urea topdressed on wheat on 26 June, 100 kg/ha.

Trial 88TS69

Maintenance application rates of potassium on sandplain soils

Location: North Eneabba. …

Understanding Crop Growth On Duplex Soils., R. Belford, Miles Dracup, D. Tennant

Experimental Summaries - Plant Research

Trial 88EB18

Location: East Beverley Research Station

Impeded early root growth.

Using aerial photography and crop growth data from previous seasons we identified areas on the site where crops grow well or poorly. One of the factors implicated in the poor growth areas is impeded early root growth (see Belford et al. and Tennant et at., 1990 Experimental Summaries, this section). Here we describe the problem and outline possible causes.

Trial 88EB18

Growth and yield of wheat and lupin crops at East Beverley.

Location: East Beverley Research Station.

To measure the growth and yield of wheat and lupin crops in …

Time Of Sowing X Variety X Seeding Rate For Lupins On The South Coast., M. Seymour

Experimental Summaries - Plant Research

Trial 90E9

Lupin time of sowing x variety x seed rate.

Location: Esperance.

To evaluate the response of lupin varieties to a range of sowing dates and plant densities when grown in high rainfall/long growing season environments.

Virus Diseases Of Subterranean Clover., R. A. Jones

Experimental Summaries - Plant Research

a) Effect of alfalfa mosaic virus infection on productivity of spaced plants.

Location: South Perth.

Spaced plant trials were done with AMV-EW isolate. Young plants of sub. clover cv. Daliak growing in jiffy pots were inoculated with AMV- containing sap or mock-inoculated with healthy sap and then transplanted onto the South Perth plots in paired rows separated by oat buffer rows.

b) Effect of Bean Yellow Mosaic Virus on productivity of grazed swards. (90MT14).

Location: Mt Barker.

A trial was done to examine the effect of BYMV infection on productivity of grazed subterranean clover swards.

c) Persistence of CMV from …

Middle Eocene Foraminifera From The Piney Point Formation Of The Virginia And Maryland Coastal Plain, Megan S. Jones

OES Theses and Dissertations

This study examines the foraminiferal fauna, both benthic and planktonic, of the outcropping (45 samples) and subsurface (31 samples) middle Eocene Piney Point Formation in Virginia and Maryland. The primary objective of this study is to further refine the depositional history of the Salisbury Embayment which is represented by the middle Eocene Piney Point Formation. Ninety-six species of benthic and planktonic foraminifera were identified in this study. Of these, several are characteristic of the middle Eocene: Asterigerina texana, Hanzawaia danvillensis, Ceratobulimina exima, Cibicides westi, Chiloguembelitria columbiana, C. stavensis, Testacarinata inconspicua and Pseudohastigerina wilcoxensislmicra. While these were relatively abundant, diagnostic middle …

Phosphorus And Sulphur Nutrition Of Pastures In High Rainfall Areas., M. D. Bolland, M. F. Clarke

Experimental Summaries - Plant Research

J.S.Yeates and M.F.Clarke started these experiments. In January 1990 M.D.A. Bolland replaced J.S. Yeates (who became Regional Manager of the Northern Agricultural Region) as the Research Officer responsible for the management of the long-term experiments, and to continue the research on the topic.

In the experiments the fertilizers wee applied in autumn (March-April) in the years listed in the tables.

Trial 80AL4

Location: Cuthbert.

A new experiment was started in 1989 to compare two partially acidulated rock phosphate (PARP) fertilizers with ordinary (single) superphosphate (OSP).

Trial 84AL32

Location: Denmark

The fertilizers compared are ordinary (single) superphosphate (OSP). New (pre 1990) …

Declared Plants - Biology, Ecology And Biocontrol., J. Dodd

Experimental Summaries - Plant Research

Trial 90PE26

Effect of the leaf-mining moth, Dialectica scalariella, on development and seed production of Paterson's Curse, Echium plantagineum.

Location: Jane Brook (Swan Valley)

The aim of the trial was to reveal the effect of the leaf-mining moth on the growth and reproductive output of Paterson's curse. The trial was conducted at Jane Brook (Swan Valley), a site heavily infested with the moth.

Trial 89PE8

Establishment and spread of the leaf-mining moth.

Location: Perth, Avon Valley, Northam, York, Chittering Shire.

The progress of winter 1989 releases of the leaf-mining moth was monitored by inspecting release sites in October 1989, when …

Time Of Sowing And Variety Of Lupins On The South Coast., M. Seymour

Experimental Summaries - Plant Research

Trial 90ES5, 90ES6, 90E7

Lupin time of sowing x variety.

Location: Gibson

To evaluate the response of lupin varieties to a range of sowing dates when grown in high rainfall/long growing season environments.

Trial 90ES8

Lupin time of sowing x variety.

Location: Scaddan

To evaluate the response of lupin varieties to a range of sowing dates.

Agronomic Practices To Improve Or Maintain The Protein Content Of High Yielding, Long Season Wheats., Wayne Smith

Experimental Summaries - Plant Research

Trial 90SG8, 90SG9, 90ES9, 90ES11, 90MT8, 90KO2

Wheat variety * Time of sowing

Location: Salmon Gums Research Station, Mt. Ridley, East Gibson, Mt Barker Research Station, Kojaneerup Research Station

The aim is to define the optimum heading/flowering date on the South Coast. This trial also provides information on the performance of the varieties and new cross-breds at various sowing times.

Trial 90E10, 90ES12, 90ES13, 90ES14, 90ES15, 90ES16, 90SG10, 90SG11, 90MT10, 90KO3, 90KO4

Wheat protein on the South Coast

Location: Esperance Downs Research Station, Gibson, Neridup, Mt Ridley, Salmon Gums Research Station, Mt Barker Research Station, Kojaneerup Research Station

The Australian …

Pod Setting Of Lupins On The South Coast., M. Seymour

Experimental Summaries - Plant Research

Trial 90ES7

Lupin pod setting study.

To investigate the effect of time of sowing on the flowering and pod set of lupins, when grown in high rainfall/long growing season environments.

Long Term Minimum Tillage Investigations., R. J. Jarvis

Experimental Summaries - Plant Research

Trial 77M13

Location: Merredin

This site was in wheat in 1975 and 1976 before the treatments commenced on continuous wheat in 1977.

77M56

Location: Merredin

Sited alongside 77M13 with the same paddock history. Commenced the wheat/pasture rotation after wheat in 1975 and 1976.

Trial 86M79

Chemical and cultivated fallow in a pasture/wheat rotation on heavy land.

Location: Merredin.

At Merredin on salmon gum/gimlet soil. Pasture treatments and soil moisture measurements were conducted in 1990. Wheat 1991.

Trial 87NA80, 81, 82, 83

Direct drilling with modified combines compared with cultivation for pasture/wheat rotations with grass control treatments in the pasture year. …

Rates Of Phosphorus And Potassium For Lupins On The South Coast,, M. Seymour

Experimental Summaries - Plant Research

Trial 90ES23

Phosphorus and potassium response of lupins in high rainfall areas.

Location: Neridup

To evaluate the response of lupins to Phosphorus and Potassium response of lupins in high rainfall areas.

Effect Of Pasture Species On Pasture Production And Following Cereal Yields On Heavy Textured Soils In Low Rainfall Areas. Regeneration Of Pasture Legume Cultivars On Low Rainfall Red Loam Soils., Bradley Nutt

Experimental Summaries - Plant Research

Trial 90GE17

Aphid tolerance evaluation in annual medics

Location: Tenindewa

Maturity and seed yields of annual medic lines with or with out aphid control using Pirmor.

Trial 90GE116

Evaluation of aphid tolerance in annual medics

Location: Tenindewa

Dry matter and seed yield of annual medic lines with and without aphid control using Pirmor.

Trial 90GE34

Effect of pasture species on pasture production and cereal yields on low rainfall red loams.

Location: North Mullewa Research Station, Morawa Agricultural School.

Regeneration of annual pasture cultivars on hardsetting red clay loams at North Mullewa and Morawa in 1989 and 1990.

Trial 88TS63

Effect …

Calibration Of A General Optical Equation For Remote Sensing Of Suspended Sediments In A Moderately Turbid Estuary, Richard P. Stumpf, Jonathan Pennock

School of Marine Science and Ocean Engineering

Abstract

A general algorithm for determining suspended sediment concentrations in the surface waters of estuaries has been developed for use with satellite data. The algorithm uses a three-parameter general optical equation to relate suspended sediment concentrations to water reflectances that have been corrected for sun angle effects, atmospheric path radiance, and tidal excursion. Using data collected by the advanced very high resolution radiometer on five different dates, reflectances were determined using two different methods, one providing maximum correction for haze and the other providing minimum sensitivity to pigments. For both methods, in situ and remotely sensed samples from Delaware Bay …

Determining Pesticide And Nitrate Levels In Spring Water In Northwest Arkansas, T. L. Lavy, B. A. Dehart, John D. Mattice

Arkansas Water Resources Center Technical Reports

Occurrences of pesticides in our nations ground water are on the rise. As states become aware of this problem and begin monitoring programs, incidence of contamination will probably increase. Since the problem of pesticides in groundwater is relatively new, little research has centered on the fate of pesticides after they reach the groundwater environment. In Northwest Arkansas efforts to monitor groundwater for pesticides have been small. Twenty-five springs in Northwest Arkansas were sampled in the fall of 1988, and spring of 1989. Analysis for atrazine, alachlor, metolachlor, diuron, and simazine in spring water was preformed using gas liquid chromatography and …

Analysis, Design And Implementation Of A Pilot Relational Database For Groundwater In The State Of Arkansas, Ray Hashemi-Nassab

Arkansas Water Resources Center Technical Reports

There are several agencies within the state of Arkansas dealing with underground water. Each agency has its own database that acts as an isolated depository of data. Practically, the communication among these databases is zero, not because there is no need for it, but because the communication is very difficult if not impossible. Data redundancy, inconsistency, and lack of integrity is overwhelming. In this study we have addressed the problem of lack of unity among the databases belonging to different agencies. Also, as an alternative we have developed a relational database. In this database the data was normalized to 4NF. …

An Expert System For Managing An Activated Sludge Wastewater Treatment Plant, Sandra C. Parker, David G. Parker

Arkansas Water Resources Center Technical Reports

A diagnostic expert system for an activated sludge wastewater treatment plant has been designed to link with a relational database management system for obtaining operational parameter values that are used by the program to diagnose operational problems that may occur in the process. The problems that are dealt with by the system are bulking sludge, floating sludge, defloculation, ashing, solids washout, foaming problems, high soluble effluent BOD and problems in the aeration system. The link between the expert system and the database is accomplished via programming that is initiated by the expert system program. The operator of the system is …

Minimizing The Potential For Groundwater Contamination From Agricultural Point Sources, Joseph H. Massey, Terry L. Lavy, John D. Mattice

Arkansas Water Resources Center Technical Reports

An activated charcoal filtration unit was designed to remove pesticides from leftover pesticide solutions and rinsates generated under farm-like conditions. The system, fabricated for less than $1400 using readily available components, effectively removed the pesticides atrazine, benomyl, carbaryl, fluometuron, metolachlor, and trifluralin from wastewater generated on the University of Arkansas Agronomy Farm located in Fayetteville, AR. A total of 2253 L of wastewater were treated using the system. Of these 1768 L were generated from washing out the spray tank (rinsates) while 485 L stemmed from leftover pesticide solutions that were mixed, but not applied. Typical initial pesticide concentrations in …

Improving Irrigation Scheduling And Water Use Efficiency In Cotton, Derrick M. Oosterhuis

Arkansas Water Resources Center Technical Reports

Cotton (Gossypium hirsutum L) is an important crop in the southern United States. The crop is grown in both irrigated and rainfed situations and is seldom free from periods of water shortages at some stage during the season. In recent years the need for consistency in yields and a stable cash flow has resulted in a rapid expansion in the number of irrigated acres of cotton in the Mississippi Delta. Irrigation research has, however, not kept pace with this expansion. This project represents a start at meeting this urgent need. The influence of weather patterns necessitates that these studies be …

Simulation Of The Fate Of Nitrogen From The Disposal Of Poultry Litter, H. D. Scott

Arkansas Water Resources Center Technical Reports

A PC/AT computer model was developed to simulate the transport of water, nitrate and ammonia in the soil profile after an application of poultry litter to pasture. The model was written using FORTRAN 77 compiler and can be used on any IBM type compatible computer with a math coprocessor. Poultry litter has been shown to be a potential source of plant nutrients, but mismanagement can result in nitrate pollution of the surface and groundwater. The model is composed of a main program, 11 subroutines and three subprograms. An example was shown of the flexibility and dynamic nature of the computer …

Presentation Of Verified Algal Taxa As Reference Sources, Richard L. Meyer

Arkansas Water Resources Center Technical Reports

A data base of the algae of Arkansas ecoregions has been established to describe the numerous taxa that occur within the aquatic ecosystems included in these regions. The organisms were identified with the aid of diverse literature from throughout the world. These sources are written in multiple languages and the living organisms had to be compared with outline or silhouette drawings. These illustrations may include shading, but none present the true color of the organism but only the characteristics of the descriptive source. Primary characteristics used to identify algae is based upon pigmentation of the plastid and the number and …

Chirp Subbottom Profiler For Quantitative Sediment Analysis, Steven G. Schock, Lester R. Leblanc, Larry A. Mayer

Affiliate Scholarship

A wide‐band, frequency‐modulated, subbottom profiling system (the chirp sonar) can remotely determine the acoustic attenuation of ocean sediments and produce artifact‐free sediment profiles in real time. The chirp sonar is controlled by a minicomputer which performs analog‐to‐digital and digital‐to‐analog conversion, correlation processing, and attenuation estimation in real time. The minicomputer generates an FM pulse that is phase‐ and amplitude‐compensated to correct for the sonar system response. Such precise waveform control helps suppress correlation noise and source ringing. The chirp sonar, which has an effective bandwidth of 5 kHz, can generate chirp (Klauder) wavelets with a tuning thickness (Rayleigh’s criterion for …

Pisces Iv Submersible Observations In The Epicentral Region Of The 1929 Grand Banks Earthquake, John E. Hughes Clarke, Larry A. Mayer, David J.W. Piper, Alexander N. Shor

Affiliate Scholarship

The PISCES IVsubmersible was used to investigate the upper continental slope around 44 ON, 56" W, near the epicentre of the 1929 Grand Banks earthquake. Four dives in water depths of 800-2000 m were undertaken to observe speci3c features identijied with the SeaMARC I sidescan system in 1983. Two dives were made in the head of Eastern Valley where pebbly mudstones ofprobable Pleistocene age were recognized outcropping on the seafloor. Constructional features of cobbles and boulders, derived by exhumation and reworking of the pebbly mudstone, were also observed. These include gravel/sand bedforms (transverse waves) on the valley floor. Slope failure …

Medic Variety Evaluation., C. K. Revell

Experimental Summaries - Plant Research

Trial 89M57

Medic variety evaluation - rows.
Merredin Research Station (Paddock T5)

Trial 89ME71

Selection of early maturing M. murex.
Nokaning.

Trial 88ME86

Evaluation of Santiago in low rainfall areas.
Mukinbudin.

Trial 87M73

Medic variety evaluation - large plots.
Merredin Research Station.

Trial 86M65

M. polymorpha variety evaluation - large plots.
Merredin Research Station.

Trial 88ME84

Evaluation of burr medics on Morrel soils.
Nokaning.

Trial 88SC30

Selection of early maturing M. murex.
Merredin.