Life Sciences Commons^™

The Role Of Iron Nutrition In Regulating Patterns Of Photosynthesis And Nitrogen Metabolism In The Green Alga Scenedesmus Quadricauda, Dennis Raymond Ades

Dissertations and Theses

The influence of iron nutrition on patterns of photosynthetic behavior, nitrogen metabolism, and fixed-carbon allocation is reported for a common freshwater green alga. Cultures of Scenedesmus quadricauda were grown in Fraquil medium in which iron concentrations ranged from 1.0 μM to 0.01 μM (log 10-6 to 10-8 M, respectively). Carbon 14 and nitrogen uptake experiments were conducted at photosynthetically saturating and subsaturating photon flux densities.

Molecular Cloning Of Spinach Chloroplast Dna Isolated By Alkaline Lysis, Robert Gray Drager

Dissertations and Theses

Chloroplast genomes of land plants show conservation of structure and gene arrangement. The spinach chloroplast genome is comprised of a covalently closed. circular DNA molecule of 150 kilobases and is typical of these plants. Approximately 20% of the proteins found in the spinach chloroplast are encoded by the chloroplast genome and translated on chloroplast ribosomes. The remainder are encoded on chromosomes in the nucleus, translated on cytoplasmic ribosomes and transported into the chloroplast.

Spinach chloroplast DNA was isolated from crude 2 chloroplast preparations by a new method. Chloroplasts were lysed with alkaline sodium dodecyl sulfate, contaminating macromolecules precipitated with acidified …

Agronomy Of Dwarf Oats., W. K. Anderson, R. Mclean, R. Mctaggart, G. Parlevliet, J. Warren, M. Page

Experimental Summaries - Plant Research

Location: Mt Barker Research Station, Pardelup Prison Farm, Kojonup, Williams and Mayanup.

Time of sowing x oat cultivars, 87AL6, 87BR5, 87KA4, 87MT4, 87NA7.

N rates x oat cultivars, 87AL4, 87BR8, 87KA2, 87MT2, 87NA5.

Seed rates x oat cultivars, 87AL5, 87BR4, 87KA3, 87MT3, 87NA6.

Oat cultivar factorial, 87AL7, 87BR6, 87KA5, 87MT5, 87NA8.

The Potential For Skeleton Weed, John Dodd, F. D. Panetta

Journal of the Department of Agriculture, Western Australia, Series 4

Since its introduction into Australia during the 900s skeleton weed has become one of the most economically significant weeds. Its presence in cereal crops in south-eastern Australia has caused suvere yield reductions and harvesting problems.

Skeleton weed was first found on a Western Australian farm in 963. Since then it has been the subject of an intensive eradication campaign organised by the Agricultural Protection Board and funded by an annual levy on wheat growers. Such campaigns, which rely mainly on volunteer searchers, do not exist in eastern Australia because the weed is so widespread it would be impossible to eradicate. …

Peanuts In The Ord, D L. Mcneil, D. W. Bennett

Journal of the Department of Agriculture, Western Australia, Series 4

The peanut industry on the Ord River Irrigation Area is expected to gross about $1.9 million at the end of the decade, a tidy return for an industry that only started truly commercial plantings some six yesrs ago.

At present the Ord River Irrigation Area produces about 2.5 per cent of Australia's total production, but it hopes to increase this to 7 per cent. High yields and plantings on non-staining soils make peanuts one of the most succesful crops grown on the Ord.

Gypsum Use In The Wheatbelt, M R. Howell

Journal of the Department of Agriculture, Western Australia, Series 4

One of the limitations to crop productivity in the wheatbelt is the poor structure of heavy textured soils. Many years of clearing and cultivation have caused the loss of soil organic matter and breakdown of soil aggregates - particles of sand, silt and clay - in the surface layers. This has led to the development of unstable soils with poor physical properties.

Although loss of soil structure is a serious problem, it can be reversed by altering the tillage practices that caused the problem. This improvement in soil structure and return to productivity can be a slow process. However gypsum …

Broadacre Pest Control After Ddt, P J. Michael

Journal of the Department of Agriculture, Western Australia, Series 4

DDT may no longer be applied to broadacre crops grown in Western Australia. It is being replaced by other more effective chemicals and with new methods of pest control. DDT was the most effective chemical for the control of several major broadacre pests in this State and farmers may well wonder why this change was necessary and how they will manage without DDT.

Wheat Payments And Protein Content, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

In recent years there has been increasing support from within the Australian wheat industry for the principal of wheat growers recieving payment for their grain according to market value.

Individual loads are now tested for quality characteristics such as hectolitre weight, unmillable material and moisture content.

At present, technology is not sufficiently advanced to enable rapid and accurate analysis of individual loads for all important quality factors.

A more practical system of quality assessment would be one based on allowances for various basic measures (such as hectolitre weight, unmillable material and moisture content), variety (to allow for genetic differences in …

Variation In Wheat Protein Content : The Effect Of Environment, G B. Crosbie, Harry Fisher

Journal of the Department of Agriculture, Western Australia, Series 4

Over the past 20 years, the average protein content of WesternAustralian wheat has ranged from 9.3 to 12.0 per cent, with a mean level of 10.4 per cent. At most grain receival points, in any one season, individual loads can often vary in protein content by as much as 5 per cent protein or more. Rainfall and soil fertility account for much of this variation.

Increasing Protein Content Of Wheat By Breeding, B R. Whan, Graham Crosbie

Journal of the Department of Agriculture, Western Australia, Series 4

The most efficient means of increasing protein content of WesternAustralian wheat is by breeding new varieties with higher inherent protein in their grain. But is this possible without sacrificing yeild or other desirable characteristics?

An Inventory And Condition Survey Of Rangelands In The Carnarvon Basin, Western Australia, A L. Payne, G F. Spencer, P J. Curry

Technical Bulletins

The inventory and condition survey of rangelands in the Carnarvon Basin, undertaken by the Department of Agriculture and Food, Western Australia (DAFWA) between 1980 and 1982, describes and maps the natural resources of the region’s pastoral leasehold land. This survey report provides a baseline record of the existence and condition of the natural area’s resources, to assist with the planning and implementation of land management practices. The report identified and described the condition of soils, landforms, vegetation, habitat, ecosystems, and declared plants and animals. It also assessed the impact of pastoralism and made land management recommendations. The area surveyed covers …

Wheat And Barley Experiments On The Kumarl Soils At Salmon Gums, D A. Collins, Michael D A Bolland, R D. Fletcher

Technical Bulletins

The water-holding capacity of these soils, and their location in a low rainfall area combine to make them marginal for producing grain. In contrast to sowing wheat on ley pasture, mechanically fallowing the year before planting markedly improved grain yields by 1.3 to 4 times.

The Economics Of Saltland Agronomy, John S. Salerian, Clive Malcolm, Eddie Pol

Resource management technical reports

No abstract provided.

Root Disease Of Cereals, G C. Macnish, Chang Sha Fang, Karen Mcroberts

Experimental Summaries - Plant Research

Effects of nitrogen source on take-all, 82N34, 77E4. Take-all, cultivar, fertilizer, fungicide interactions, 87MT47, 87MT48, 87MT49. Take –all decline, 86MT7. Rhizoctonia root rot. Rhizoctonia patch and soil compaction, 87E28. Rhizoctonia patch and short chemical fallow, 87E3, 87E38. Rhizoctonia strains and paddock history, 87E31. Rhizoctonia root rot - host effects on strains, 87BA4, 86E30. Fusarium crown rot. Fusarium crown rot and cultivars, 87ME2, 87ME4, 87ME3 ( abandoned ).

Reactions Of Molybdenum With Soil Affecting Its Availability To Wheat Plants V. Initial Residual Effectiveness For A Range Of Acidic Yellow-Brown Sandy Soils, M M. Riley

Experimental Summaries - Plant Research

To relate the molybdenum adsorption capacities of a range of acidic, yellow-brown sandy soils to the initial and residual effectiveness of molybdenum added to these soils for the growth of wheat. 87GL2

Nitrogen Rates On The Main Copper Plots Of The Long Term Copper Residual Trial At Newdegate Research Station, R F. Brennan

Experimental Summaries - Plant Research

Trial 87N23

Location: Newdegate Research Station.

To determine the effects of rates of nitrogen on the copper status of plants.

Trial 86c63 Rotation, Deep Ripping And Water Use And Trial 87ge97 Cereal Management Trials, J. Hamblin, R. Delane, Glenn Adam

Experimental Summaries - Plant Research

To examine the value of a package approach to growing cereals in the northern agricultural region. Treatments included planting date , species (wheat v barley) and variety (differing in maturity), as well as deep ripping and fungicide spray.
87GE97

To examine the effect of different rotational histories, particularly residual water, on following crops. Barley, wheat, lupins, medic.
86C63

1987 Agricultural Research, Southeast Kansas Branch Station, L. W. Lomas, K. W. Kelley, J. L. Moyer, D. W. Sweeney

Kansas Agricultural Experiment Station Research Reports

Research on beef cattle and crops at Southeast Kansas Branch Station.

Water Use By Some Crops And Pastures In The Southern Agricultural Areas Of Western Australia, R A. Nulsen, I N. Baxter

Resource management technical reports

No abstract provided.

Effect Of Agronomic Practices On Wheat Protein Levels, M G. Mason

Journal of the Department of Agriculture, Western Australia, Series 4

High grain protein levels are preferred for many end-uses of wheat. However, there has been little or no incentive for farmers to use practices which would increase protein levels, because wheat payments are made without a price differential for proteinlevel, except where wheat could qualify for the Australian Hard grade.

Surface Drainage Trial., Department Of Agriculture, Western Australia.

Experimental Summaries - Plant Research

Trial 86V1

Location: Vasse Research Station.

The aim of this experiment was to quantify the response of annual pastures to improved surface drainage by laser levelling and from the pasture response data determine the cost.

The Role Of Barley In Future Rotational Systems In Drier Wheatbelt Areas Of Western Australia., P. Simpson

Experimental Summaries - Plant Research

Comparison of barley and wheat yields over four soil types and yield component analysis at Nangeenan NW of Merredin, 86ME88, 86ME89, 86ME90 and 86ME91. Comparison of barley and wheat yields over four soil types at Bodallin, east of Merredin, 86ME92, 86ME93, 86ME94 and 86ME95. Comparison of barley and wheat yields over two ‘levels’ of soil salinity - EC, 87ME63 and 87ME64. Comparison of barley and wheat yields over 2 soils of differing textural type – ‘heavy’ and ‘light’, 87ME65 and 87ME66. Effect of time of sowing on barley and wheat yields, 87ME67.

Pasture Agronomy Branch, Pasture Growth Rates., P Booth

Experimental Summaries - Plant Research

Location: Shire of Augusta-Margaret River, Shire of Elgin and Shire of Bridgetown-Greenbushes.

To quantify and identify insect and fungal losses of annual pasture production caused through seedling mortality and early production losses. Three sites in the Margaret River/Augusta Shire, one in the Elgin Shire and one in the Bridgetown Shire were used.

The Effect Of Sodium Chloride On Boron Toxicity In Barley., M M. Riley

Experimental Summaries - Plant Research

To examine the effects of salinity on the uptake of boron and the growth of barley.
87GL3a/4864

Trial 66m29, I Rowland., W Hawkins

Experimental Summaries - Plant Research

Trial 66M29. Location Merredin sandy clay loam. Response to nitrogen.

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

The Effects Of Rates Of Nitrogen On The Copper And Zinc Status Of Wheat Plants And Grain Production., R F. Brennan

Experimental Summaries - Plant Research

To examine the possibility of rates of nitrogen inducing copper and zinc deficiency in wheat.
87JE22