Digital Commons Network^™

Land Systems Of The Brockman River Catchments, S. Porritt

Natural resources published reports

The survey was conducted to gain basic information about the agricultural land use of the Brockman River Catchment. The University of Western Australia Faculty of Agriculture was interested in the area as a compact, agriculturally diverse area close to Perth which was, therefore, suitable for filed studies. The Department of Agriculture, Moora Office was interested in this study as a framework within which to improve its extension services in the area.

Both parties cooperated in investigations of the area by providing data and equipment. Field work was carried out in summer 1973-74 and data compiled by an agricultural science student …

1974 Potassium Soil Test Calibration Trials 1. Soil Analysis, W. J. Cox

Experimental Summaries - Plant Research

Site details - 74AL1, 74AL2, 74DE1, 74DE2, 73DE3, 73DE4, 73DE5, 73DE6, 74MA1, 74MA2, 74MA3, 74BU1, 74BU2, 74BU3, 74BU4, 74BY1, 74BY2, 74BY3, 74HA1, 74HA2, 74HA3, 74AR1, 74AR2, 74M01, 74M02, 74M03, 74NA1, 74NA2. 1974 Soil analyses. I. % Gravel, bulk density and ph measurements. I (a) Moisture characteristics. II. Measures of Available potassium. III. CSBP results.

Summary Of 1974 Phosphorus And Sulphur Group, J W. Bowden, B. Scurr, R Lunt

Experimental Summaries - Plant Research

Stocking x Super Rate - Merredin - 66M30. Twitcham - 62MB9. Kojonup - 68BR7. Maintenance P x S Trials - I. Residual Value - 66N07 and 66ME3. II. Wheatbelt Rate Trials - 67N011, 66LG1, 68LG1, 67NO5, 6NA3, 67GE2, 66M06 and 67M01. III. Wheatbelt Research Stations and Farmers- 65C5, 65A1, 65N5,69WH15 and 66N09. IV. Higher Rainfall Area Trials - 68B1, 68BU2, 68BR5,68AL3, 69E6, 69AL2 and 69AL3. Miscellaneous Trials - 74GE2, 74GE4, 74GE5,74JE3, 74LG4, 74M06, 74M07, 74TS3, 74NA3 74NA4, 74M07, 74TS4.

Interim Summary 1974 Experiments, M L. Poole

Experimental Summaries - Plant Research

Data presented for: 74MT38 - Variety Trial - New rape and radish varieties 74MT27 - Rates of seed, time of planting on Crambe abyssinica 74GE'1 ·- Time of Seeding X Rate of Nitrogen on Sunflowers. Oilseed and Grain Legumes under Summer Irrigation. Sunflower Progress Report. Safflower Progress Report. Response of Oilseed Crops to Climate. Introduction - The results given in this report provide an interim record of 1974 experimental work with oilseed crops. An essential part of oilseed trial programme is an evaluation of the quantity and quality of oil produced by different species and varieties under a range of …

Summary Of Experimental Work 1974, G Walton

Experimental Summaries - Plant Research

Lupinus albus cv WB2: Maximum yield response to 36 plants/m2 at Avondale (1973 and 1974) and Mt Barker Research Station in 1973 (achieved with 180 to 200 kg/ha seed rate), Maximum yield response to 48 plants/m2 at Chapman 1973 and 1974 and at Eradu 1974 (achieved with 220 tG 240 kg/ha). Very good yield results: Season - site Avondale 1973-3300, 1974-2250. kg/ha Chapman 1973-2800, 1974-2400. Mt Barker 1973-1900. 74A2 - Rates Of seeding for L, albus cv WB2. 74A21 - Rates of super on two lupin varieties. 74BR1 - Pasture regeneration after lupin survey. 74C4 - Rates of seeding L. …

1974 Potash Trials 2. Yield Data, W. J. Cox

Experimental Summaries - Plant Research

Experiment nos: 74AL1, 74AL2, 74AR1, 74AR2,74BU1, 74BU2, 74BU3, 74BU4, 74BY1, 74 BY2, 74BY3, 74DE1, 74DE2, 74DE3, 74DE4, 74DE5, 74DE6, 74HA1, 74HA2, 74HA3, 74MA1, 74MA2, 74MA3, 74MO1, 74MO2, 74MO3, 74NA1, 74NA2.

Dairying In W.A., Department Of Agriculture And Food, Western Australia

Bulletins - 3000 - 3999

Western Australia has a small dairy industry compared with its other rural production. However, the industry has consolidated over recent years.Tree clearing and pasture development on existing holdings and the amalgamation of small dairy farms has led to a rapid increase in the area of pasture per farm. The trend in Western Australia is towards bigger herds, more efficient dairies, more fodder conservation and increasing production per cow and per hectare. Commercial dairy farming in Western Australia is confined to the south-western corner of the State, south of Perth, extending in a 50-kilometre-wide strip along the coast to 50 kilometres …

1974 The Ecology And Control Of Doublegee (Emex Australis) And Emex Spinosa, D J. Gilbey

Experimental Summaries - Plant Research

The objectives of the field experimental programme for 1974 were to - 1) Evaluate a technique to measure pasture loss as a result of doublegee infestation at Merredin, Wongan.Hills and Chapman. 2) Evaluate the effect of cultural and herbicide treatment combinations on the magnitude and distribution of viable doublegee seeds in the soil at Avondale, Merredin, Wongan Hills and Chapman. 3) Measure the magnitude and distribution of viable doublegee seeds in the soil from paddocks representing each year of a two crop, plus three year pastureley rotation at Avondale, Merredin, Wongan Hills and Chapman. 4) Screen herbicides for selective control …

Fallow Re-Assessment - Wheat Variety Investigations- Root Growth And Moisture Use, D Tennant

Experimental Summaries - Plant Research

This report summarises progress and data available for the following investigations - Fallow Re-assessment - 72M29. Wheat Variety Investigations - Root Growth and Moisture Use. Location: Wongan Hills Research Station. Merredin Research Station.

Lupin Agronomy: Time Of Planting, Seeding Rate And Variety In A Long Season Area., M. W. Perry

Experimental Summaries - Plant Research

To evaluate lupin varieties and agronomic practices in a long season district using a factorial experimental design. 74A16a Location - Warriup 57 km E. of .Albany. 74A16b Green Range, 70 km E. of Albany. Time of Planting (4) Seeding Rates (4) Varieties (4) Fertiliser.

Guidebook To The 1974 Spring Field Trip Of The Nebraska Geological Society, G.R. Svoboda

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Spotlight On Mineral Stamps, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Geology Tour Of Lancaster County, Nebraska

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

A Field Study Of Infiltration On Various Agricultural Soils, Stephen J. Stephen

Theses and Dissertations (Comprehensive)

The purpose of the study was to ascertain if infiltration and temperature varied significantly among the selected soil types of the Smithfield, Otonabee, Wendigo and Farmington Series. These data were gathered from field tests performed during the summer months in Ontario and Victoria Counties.

A stopwatch was used to measure the number of seconds that were required for 0.8 inches of water to disappear into the soil inside a 4 inch diameter single ring infiltrometer which had been placed one inch into the soil surface. The soil temperature was recorded at the same time.

The sites were chosen by stratified …

Pesticide Effects In A Simulated Soil Ecosystem, Raymond J. Samp

Masters Theses

The screening of pesticides to determine which were most inhibitory to bacteria was accomplished by testing the effects of 10 pesticides on 9 different organisms using the disk assay method. Results showed that Gram positive bacteria were more sensitive to all pesticides tested than were the Gram negative bacteria. In addition, the hormone herbicides were found to be the most inhibitory to these bacteria and 2,4-D (2,4-dichlorophenoxyacetic acid), a hormone herbicide, was chosen for subsequent in vivo studies.

A soil perfusion apparatus was used to determine the effects of 2,4-D in a typical soil ecosystem. Bacterial plate counts and nutrient …

Selenium In Nebraska's Groundwater And Streams, R.A. Engberg

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Preliminary Reconnaissance Water Quality Survey Of The Buffalo National River, R. E. Babcock, H. C. Macdonald, E. E. Dale Jr., R. L. Meyer, Joe Nix, D. G. Parker, Eugene Schmitz

Arkansas Water Resources Center Technical Reports

In accordance with Contract No. CX 700030105, dated 12 February 1973, the University of Arkansas , Water Resources Resear ch Center is submitting a "Preliminary Reconnaissance Water Quality Survey of the Buffalo National River." The Water Resources Research Center of Arkansas has supplied the necessary personnel and facil ities to perform a preliminary reconnaissance survey of the Buffalo National River of Arkansas with special emphasis placed on the establishment of both permanent and temporary benchmarks for water quality sampling. Preliminary water quality samples have been collected to make those chemical, physical, and biological analyses as defined by Mr . Roland …

Fisheries Report No 13 - Results Of A Biological Survey Of The Shire Of Kent, Western Australia, N. L. Mckenzie

Fisheries Research Reports

The Department of Fisheries and Fauna is responsible for the conservation of the native fauna in Western Australia. The main approach to this problem has been the creation of reserves for "The Conservation of Flora and Fauna". These reserves, known as "Wildlife Sanctuaries", are controlled by the Western Australian Wild Life Authority - a Statutory Authority serviced by the Department.

The object of the acquisition programme is to develop a reserve system which will include, as far as possible, a full and permanent cross-section of the State's native floral and faunal assemblages and, at the same time, provide for the …

1972 Progress Report: Soil As A Factor In Modelling The Phosphorus Cycle In The Desert Ecosystem, J. J. Jurinak, R. A. Griffin

Elusive Documents

The research conducted in 1972 emphasized a nutrient assay of soil from the Curlew Valley site, phosphorus inventory of the vegetation and rabbit droppings, and further chemical characterization of soil phosphorus, which also included determination of the kinetics and energetics of the calcium carbonate-phosphate system.

Groundwater Levels In Nebraska, 1972, M.J. Ellis

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Bromegrass Productivity In Relation To Precipitation, Shrub Canopy Cover And Soil Nitrogen Content, Lawrence G. Kline

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In seasons of above normal precipitation, populations of annual weedy species increase in great abundance in semi-arid desert plant communities. These increases in biomass tie up a considerable portion of the available nitrogen of such ecosystems and may depress subsequent annual grass germination.

A big sagebrush-annual bromegrass plant community was irrigated to simulate a spring growth period of abundant precipitation amenable to annual bromegras s productivity. Productivity and nitrogen content parameters were monitored throughout the spring and summer to evaluate the short and potential long term effects of this seasonal increase in "precipitation".

Irrigation increased annual bromegrass productivity almost 50 …

A Measure Of The Amount Of Phosphate Adsorption And The Rate Of Release Of Indigenous Phosphate From A Desert Soil, Robert Lindsey Evans

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The capacity of a calcareous desert soil, Thiokol silt loam, to retain natural, as well as added, orthophosphate-P was measured by equilibrium adsorption employing a batch technique and evaluated using the two-slope Langmuir adsorption isotherm. From these data, corrected to account for indigenous soil P, a hypothesis was formulated as to the nature of retention of P by the soil, including the identification of two interfacial reactions involving P, and a value calculated for the adsorption maximum as defined by the Langmuir isotherm equation for P with soil at each of two soil depths and three constant temperatures within the …

An Intensive Edaphological Characterization Of The Soils Of Malambito Experimental Station And Its Implications In Future Agricultural Research, William L. Rubink

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Malambito Experiment Station, in the Atlántico III project area, Department of Atlántico, Colombia, had almost no quantitative edaphological data on which to base agricultural research. Unexplainably low general yields as well as problem areas of deficient plant growth only confounded the results of field plot experiments. Intensive soil sampling and subsequent measurements of pH, EC_e of the saturation extract, and the four major cations disproved the previous suggestions that the crop growth problems were related to saline, sodic, or degraded soil conditions. The Ca/Mg+K+Na ratio, although significant when correlated with plant height, was sufficient explanation for only a small …

Broad Spectrum Microwave Systems For Remotely Measuring Soil Moisture Content, W. P. Waite, K. R. Cook, B. B. Bryan

Arkansas Water Resources Center Technical Reports

A theoretical and experimental study of the microwave reflectivity of soils with varying moisture content was conducted. A system was developed to measure reflectivity over a continuous frequency range of 4 to 26.5 GHz, at incidence angles from 10° to 70°, and with both horizontal and vertical polarization. The measurements were found to be extremely accurate for smooth homogeneous surfaces, however, the effects of surface roughness were found to be more severe than predicted due to the discontinuous nature of naturally occurring rough surfaces. An algorithm was developed which used the frequency dependence of the reflectivity to estimate the effective …

Time Of Planting And Rate Of Seeding On Lupin Yield, G Walton

Experimental Summaries - Plant Research

Of the four time of planting trials twodefinitely showed superiority of earlier seeding (73BA5, 73E6). The two trials in the Southwest (73BR14 and 73MT7) gave highest yields with June sowing compared to May. Three trials (73BR14, 73E6 and 73BA5) appear to have a Variety x Time interaction for plant density, but no definite trend for either Uniharvest or Unicrop although later sowing reduced plant density. Seeding rates in excess of 82 kg/ha gave the highest yields in all trials. The rate of seeding experiments (73BA5 and 73MT7) show that the best crop density for yield (graph) lies between 8 and …

Summary Of 1973 Field Experiments With Advisers, M L. Poole

Experimental Summaries - Plant Research

SECTION I: Effect of times of planting x Benlate seed treatment on incidence of blackleg in Span and Zephyr rapeseed. SECTION II: Rapeseed Variety Trials 1973 including times of planting. This report provides a record of two series of trials carried out in 1973. Trials - 73A4, 73AL10, 73AL11, 73AL12, 73BR9, 73BR12, 73BR13, 73ES7, 73ES8, 73GE3, 73JE4, 73JE5, 73KA3, 73KA7, 73M2, 73MO11, 73MO13, 73MT5, 73MT6, 73NA6, 73NA7. Effect of times of planting x Benlate seed treatment on incidence of blackleg in Span and Zephyr rapeseed, series of 12 trials were set up, mainly in the southern agricultural areas, near previous …

1973 Legume Seed Inoculation, D L. Chatel

Experimental Summaries - Plant Research

Lupin Experiments - Eleven trials were sown during 1973 with the aim of further examining the response of lupins to inoculation on old clover land, new to lupins, and some on new land. The lime pellet and gum slurry methods were compared. The opportunity was also taken to compare a new rhizobia, WU8, with the current commercial inoculant WU425. 1. Inoculation of Uniharvest lupins - time of sowing, strain of rhizobia and method of inoculation. Sown as second crop on old clover land - WILLIAMS. 2. Inoculation of Uniharvest lupins sown as a first crop on old clover land - …

Progress And Data February 1973, D Tennant

Experimental Summaries - Plant Research

This report summarizes progress and data available for the following investigations. Lupin Growth Analysis, Rape Growth Analysis, Fallow Re-assessment, 72M29 Wheat Variety - Root Growth Study,

1973 Rates Of Phosphate On Lupin Yield, G Walton

Experimental Summaries - Plant Research

Comments on results New land sites (Graphs 1 & 2) The three sites were very responsive with the point of inflexion about 600 kg/ha super rate (similar to 1972 result). The seed x super rate interaction shows the quicker response to super with .higher seeding rates. Low super bank (800 kg/ha) (GRAPH 3) The two sites showed very little response to super applied. On the Eradu sandplain no response to super for either Unicrop or Wheat. On the Watheroo yellow sandplain ( 73M015) the two lupin cultivers and the wheat gave different responses. High super bank ( >1 OOOkg/ha) (GRAPH …

1973 Lupin Cultivar Comparison, G Walton

Experimental Summaries - Plant Research

Comparison of lupin varieties - 73LG6, 73LG7, 73LG78, 73A15, 73BA6, 73C3, 73MT8, 73MT20, 73N3.