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Physical Sciences and Mathematics
Department of Primary Industries and Regional Development, Western Australia
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- Western Australia. (36)
- Grains and field crops (31)
- Biosecurity, pests, weeds and diseases (20)
- Western Australia (14)
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Articles 1 - 30 of 54
Full-Text Articles in Life Sciences
Communication Networks And The Adoption Of Three Farn Practices, P. W. Fry, F. K. Goss
Communication Networks And The Adoption Of Three Farn Practices, P. W. Fry, F. K. Goss
All other publications
The report commences with a discussion of the diffusion and adoption model, and illustrates some of the research observations and practical outcomes that have emerged in recent years, An overview of social network research is presented as a means of understanding communication exchanges and providing data relevant to the diffusion debate. The communication and adoption studies are then reported in three separate sections in the order they were conducted. (A map of the location of the survey areas is shown in Figure I ) . The objectives, survey method, results and a summary are presented for each study.
A background …
Influence Of Soil Acidity On Barley Production., P. J. Dolling, A. R. Little
Influence Of Soil Acidity On Barley Production., P. J. Dolling, A. R. Little
Experimental Summaries - Plant Research
A soil survey of 38 sites in barley growing areas of Western Australia was carried out in 1984. It was found that 53% of topsoils surveyed had a pH less than 5.5, acid enough to suspect barley yields might be affected. In 1985 an extensive field trial proqramme was established at 9 sites. The sites were selected from the 1984 survey and they varied in their level of acidity from mild to severe. 85NA, 85NA2, 85NA5, 85NA4, 85NA3, 85KA3, 85KA4, 85KA5, 85KA6, 83N046,
Effect Of Pasture Spraying On Gall Development., V. Nieman
Effect Of Pasture Spraying On Gall Development., V. Nieman
Experimental Summaries - Plant Research
Sprays with low rates of desiccant herbicide just after head emergence has been shown to control development of toxicity in the same year. The trial was conducted to compare the effect of herbicides with different modes of action on control of toxicity and seed set. 85KA65.
Disease Rating System., M Sweetingham
Disease Rating System., M Sweetingham
Experimental Summaries - Plant Research
Lupin hypocotyl rot trials, 85BA29, 85BA30, 85BA31, 85N054. Lupin root rot trials, 85WH31, 85WH32, 85WH52. Lupin root disease survey - Moora District. Common Root Rot studies, 82M26.
Weed Seed Ecology., A. H. Cheam
Weed Seed Ecology., A. H. Cheam
Experimental Summaries - Plant Research
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. 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. Emergence of weed seedlings in relation to soil type and cultivation. 82PE32, South Perth. Emergence and fate of weed seeds in different depths of cultivated and undisturbed compacted soil. 84C49, Chapman Research Station. 84MT62, Mt …
The Ecology Of Skeleton Weed In Western Australia, Afghan Thistle Ecology, Reproductive Biology Of Gorteria Personata., J. Dodd
Experimental Summaries - Plant Research
1. The ecology of skeleton weed (Chondrilla juncea L.) in Western Australia. Seed production and water use in the glasshouse, 84PE18. Seed production and water use by field-grown skeleton weed, 84BA17, 84BA18. Seedling root growth 85PE54 2. Afghan thistle (Solanum hoplpetalm) ecology Winter rosette survival 84N050. Regenerative ability of S. hoplopetalum, 85PE51. 3. Reproductive biology of Gorteria personata. Gorteria personata Floral biology Seed content of burrs
Doublegee- Seed Dormancy And Longevity, Lupins- Pre And Post Emergence Grass Control, Radish Control, Peas- Metribuzin Bladex, Pre And Post Emergence Grass Control And Post Emergence Weed Control., D. J. Gilbey, R. Klemm
Doublegee- Seed Dormancy And Longevity, Lupins- Pre And Post Emergence Grass Control, Radish Control, Peas- Metribuzin Bladex, Pre And Post Emergence Grass Control And Post Emergence Weed Control., D. J. Gilbey, R. Klemm
Experimental Summaries - Plant Research
Doublegee seed longevity x depth. Effect of burial on longevity of doublegee achenes, 76C9, 76KA8. Lupins, Peas, pre-emergence grass control cynch, 85BA42, 85WH53, 85BA43, 85BA44, 85BA45, 85WH60, 85N078, 85N078, 85KA61, 85JE18, 85ME54, 85KA86, 85JE66, 85KA88, 85 KA 92, 85KA85, 85ME52, 85ME53, 85KA87, Weed control in peas - metribuzin - 84ME41
Capeweed, Radish, Wild Oats, Sarsaparilla, Four O'Clock, Saffron Thistle, Onion Weed, Carnation Weed, J. R. Peirce, B J. Raynor
Capeweed, Radish, Wild Oats, Sarsaparilla, Four O'Clock, Saffron Thistle, Onion Weed, Carnation Weed, J. R. Peirce, B J. Raynor
Experimental Summaries - Plant Research
85WH59, Capeweed time of spraying. Demonstration, capeweed, oil additions. 85N080, radish, nozzle angles x volumes. 85N081, radish, nozzle angles x rates. 85N082, wild oats, nozzle angles x volumes. 85N083, wild oats, nozzle angles x Rates. 85ME1, sarsaparilla, chemicals. 85N075, sarsaparilla, chemicals. 85TS26, 85ME48, 85ME104, 85GE29, saffron thistle, control with ear spraying in pasture. 85TS41, 85GE29a, saffron thistle, chemical control of seed set, 85TS27, saffron thistle, grazing trial. 85GE36, onion weed, chemicals in pasture. 85GE35, carnation weed, chemicals in pasture.
Efficiency Of Cinch On Brome Grass Control., J. E. Holmes., R L. Thomas
Efficiency Of Cinch On Brome Grass Control., J. E. Holmes., R L. Thomas
Experimental Summaries - Plant Research
85GE34, 85A11, 85A12,
Cereal Weed Control, Cereal Disease, Roundup Effects On Wheat & Barley, Noxious Weed Control., J. H. Moore, E. B. Hoskins, G. Dean
Cereal Weed Control, Cereal Disease, Roundup Effects On Wheat & Barley, Noxious Weed Control., J. H. Moore, E. B. Hoskins, G. Dean
Experimental Summaries - Plant Research
Pre-seeding Grass Control, 85AL41. Sorrel control with Ally, 85AL39. Capeweed control pre-seeding, 85AL40. Effect of PP 450 on wheat diseases, 83AL36. Roundup effects on wheat and barley, 85AL64. History effects on wheat responses, 85AL42. Garlon 480 time of spraying on blackberry. Blackberry herbicide (high volume) demonstrations and observations. Blackberry herbicide (low volume) demo sites. Comparison of sprayers and spray volume for blackberry control. Blackberry herbicides screening. Krenite on blackberry, 76 AL 8. Methods of Krenite application for blackberry Control. Blackberry Wettability. Ropewick applied 2,4-D Amine for Arum Lily control. Arum lily herbicide screening. Herbicide screening for Arum lily control. Herbicide …
The Ecology Of Skeleton Weed (Chondrilla Juncea) In Western Australia, Demographic Aspects Of Wild Radish (Raphanus Raphanistrum) Populations In Lupin Crops And Identification Of Populations Of Mesquite (Prosopis Spp) From The West Pilbara Region., F. D. Panetta
Experimental Summaries - Plant Research
To determine what forms of skeleton weed are present in Western Australia and to map their respective distribution. To determine, on the basis of climatic characteristics, the suitability of various areas within the Western Australian wheatbelt for infestation by skeleton weed. To determine the amounts, viability and dormancy status of seeds produced by field-grown plants during summer and autumn months. To determine the effectiveness of conventional tillage practices in limiting establishment of skeleton weed seedlings. To determine the regularity with which seedling establishment occurs under field conditions and how the probability of establishment is affected by the time of germination. …
Serradella Trial Programme., L. Cransberg
Serradella Trial Programme., L. Cransberg
Experimental Summaries - Plant Research
Serradella Line Evaluation - Stage 2 85A155, Serradella Line Evaluation - Stage 3 85A156, Serradella Establishment - Time of Seeding x Seeding Rate 85A157, Serradella Establishment - Pod Undersowing (Variety x Rate) 85A158, Serradella Establishment - Pod Undersowing (Inoculation) 85A159.
Farm Systems Research Involving New Pasture Species., C. W. Thorn, C. K. Revell
Farm Systems Research Involving New Pasture Species., C. W. Thorn, C. K. Revell
Experimental Summaries - Plant Research
The effect of grazing on Circle Valley medic production. Effect of rotations on M. polyrnorpha production and persistence and cereal crop yields, 84 KA 35, 85 LG 44, 84 KA 37 Effect of tillage x gypsum x nitrogen on continuous cereal production, 84 KA 28. Effect of gypsum x seeding rate on the seed yield of three pasture legumes. Pasture species tolerance to grass and broadleaf herbicides. Undersowing cereal crops with burr medic.
Phosphorus Nutrition., M. D. Bolland, M. J. Baker, C. H. Phillips
Phosphorus Nutrition., M. D. Bolland, M. J. Baker, C. H. Phillips
Experimental Summaries - Plant Research
Trials reported on: 85 NA 34, 85 NA 35, 85 NO 63, 85 BA 34, 85 BA 36, 85 BA 37, 76 WH 9, 84 E 31, 84 M 63, 84 NO 69, 77 MT 2, 78 BA 7, 65 A 1, 69 WH 15.
Long Term Rotation Trials, Lupins: Wheat Rotation., I. Rowland, W. Hawkins
Long Term Rotation Trials, Lupins: Wheat Rotation., I. Rowland, W. Hawkins
Experimental Summaries - Plant Research
Long term rotation trials 66M29, 67C13, 67N4, 68E5, 65SG5, 73SG16, Lupins : wheat rotation 80TS3, 82TS2, 82M26.
Phosphorus Nutrition Of High Rainfall Pastures, Sulphur Nutrition Of Pastures And Sulphur - Low Rainfall., J S. Yeates, D. M. Deeley, M. F. Clarke, R. A. Deyl, G. T.B. Cockerton
Phosphorus Nutrition Of High Rainfall Pastures, Sulphur Nutrition Of Pastures And Sulphur - Low Rainfall., J S. Yeates, D. M. Deeley, M. F. Clarke, R. A. Deyl, G. T.B. Cockerton
Experimental Summaries - Plant Research
Phosphorus nutrition of high rainfall pastures - Peel Harvey Estuarine System Study and related phosphorus work. (1) Sources, rates, time of application of phosphorous on high rainfall pastures. 81AL5, 81AL6, 82AL10, 82HA32, 83HA26, 83HA27. (2) P sources and rates on sandy soils of the high rainfall areas. 84AL33, 84AL34, 84HA18, 84HA25. (3) Maintenance rate of P on pastures on sandy soils. 84AL32, 84HA17, 84HA24, 84 HA28. Sulphur nutrition of pastures A. Sulphur - high rainfall (2684 EX/4054EX) (1) Sources, rates, time of application of sulphur to pastures. 80AL4, 80AL4B (2) S sources and rates on pastures on sandy soils of …
Soil Acidity In The Eastern Wheatbelt., W. Porter, S. Carr, P. Bourne
Soil Acidity In The Eastern Wheatbelt., W. Porter, S. Carr, P. Bourne
Experimental Summaries - Plant Research
Effect of profile acidity on nutrient and water use by wheat, 85M48. Effect of liming a wodjil soil prile on lupin production, 82ME10 and 82M5 . Lime banding in acid subsoils for wheat, 81M54. Liming topsoil. Rates of lime on wheat, 80M30. Residual value of lime (lupins 1985) 80M31. Survey Survey of extremely poor eastern wheatbelt yellow earth soils, 85ME92
Summary Of Rhizobium Experiments., J G. Howieson
Summary Of Rhizobium Experiments., J G. Howieson
Experimental Summaries - Plant Research
The screening of 33 isolates of R. meliloti collected in Sardinia in 1984, and isolated on a low pH medium, 84ME33. Assessment of the possibility of establishing an 'Index of Symbiotic Competence' for species of Medicago, 85M57. Assessment of the effectiveness of several strains of R. meliloti on M.littoralis, and their saprophytic competence in an acid soil, 84ME35. The screening of the pre-1984 collection of R.meliloti held at the W.A. Department of Agriculture for acid tolerance, 84M34. Assessment of the survival of the Serena WSM419 symbiosis on a range of soil types, 84ME32, 84WH24, 84N18. Assessment of the acid tolerance …
Pasture Manipulation And Root Diseases Of Cereals., W Macleod
Pasture Manipulation And Root Diseases Of Cereals., W Macleod
Experimental Summaries - Plant Research
Rotation for wheat comparing pure clover ley with a pasture ley, 79E15. Pasture renovation techniques and crop production in a 1:2 rotation, 81E35. Pasture manipulation effects on take-all, 85E32
Studies On The Effects Of Nutrition And Tillage Systems On Cereal Root Diseases., R. F. Brennan
Studies On The Effects Of Nutrition And Tillage Systems On Cereal Root Diseases., R. F. Brennan
Experimental Summaries - Plant Research
Micronutrients (Cu, Zn) and take-all, 83ES39, 83ES40. Nitrogen and Phosphorus rates and take-all, 83ES41, 83ES42, 83ES43. Split applications of Nitrogen and take-all, 84N1. Take-all and Manganese/Ammonium interaction, 84E1. Split applications of Nitrogen and take-all, 84E2. Cu residual on wheat and take-all, 67E9, 67E8. Take-all and Manganese/Ammonium interaction, 84LG2. Cultivation depths and timing effects on Rhizoctonia, 84E24. Chemical fallow and cultivation effects on Rhizoctonia, 85E33. Effects of cultivation depths and machines on Rhizoctonia and yield, 85E29.
Root And Foliar Diseases Of Wheat On Sandplain In The Geraldton Region., J. Wilson
Root And Foliar Diseases Of Wheat On Sandplain In The Geraldton Region., J. Wilson
Experimental Summaries - Plant Research
A project funded by Wheat Industry Research Council and Wheat Industry Research Committee of W.A. Interactions between stubble, rotation, ripping and nitrogen, ECRS, 85C53. The effect of type of cultivation implement, and time of cultivation, ECRS, 85C54. The effect of fumigation, ECRS, 85C91. Residual ripping responses from 1984, 84C15.
Stubble Retention Effects On Soil Water Storage And Yield., D. Tennant
Stubble Retention Effects On Soil Water Storage And Yield., D. Tennant
Experimental Summaries - Plant Research
Merredin Research Station on red brown earth soil type, 84M1, 84M5. Summer data. Winter data.
Long Term Minimum Tillage Investigations, Stubble Management Techniques, Deep Ripping And Seeding Machine Comparisons., R. J. Jarvis, L. G. Butcher, L. D.J. Smith
Long Term Minimum Tillage Investigations, Stubble Management Techniques, Deep Ripping And Seeding Machine Comparisons., R. J. Jarvis, L. G. Butcher, L. D.J. Smith
Experimental Summaries - Plant Research
77 A 16, red/brown sandy loam. 77 WH 17, yellow clayey-sand (Wongan loamy sand). 77 M 13, red sandy clay loam (salmon gum, gimlet). 78 M 25, Yellow acid loamy sand (Wodgil). 77 Mt 15 Gravelly loamy sand/sandy loam - forest soil 77 E 18, fine white sand over fine sandy clay. 77 A 43, Brown loamy sand/sandy loam - Jam country.77 WH 88, Grey loamy sand over gravel at 50 cm - Elphin soil series – Mallee. 77 M 56, Red sandy clay loam - Salmon Gum, Gimlet. 82 M 35, Loamy sand/sandy loam – Mallee. 77 E 52, …
Experimental Summaries Various Trials 1985, R Madin, F Schoonens, A Lindsay
Experimental Summaries Various Trials 1985, R Madin, F Schoonens, A Lindsay
Experimental Summaries - Plant Research
85WH55, 85M55. The effect of timing of Roundup and spray.
85NO87, Evaluation of herbicides for control of lupins in cereals.
85NO89, Control of self sown lupins in cereal crops.
85NA59, Grass controI in barley with Isoproturon, Cinch and Metribuzin.
85NO88, Control of wild oats with hoegrass and oil.
85NO86, Tolerance of wheat to hoegrass and oil.
85NO84, Tolerance of lupins to Fusilade plus oil.
85NA63, Ryegrass control in crop with hoegrass plus crop oil.
85A15, Rates of Fusilade for seed set control in grasses.
85A17, Pasture topping herbicides and oils (Silvergrass).
85WH64, Crop oil additives to seed set control herbicides. …
Weed Seed Ecology, A H. Cheam
Weed Seed Ecology, A H. Cheam
Experimental Summaries - Plant Research
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. 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. Emergence of weed seedlings in relation to soil type and cultivation. 82PE32, South Perth. Emergence and fate of weed seeds in different depths of cultivated and undisturbed compacted soil. 84C49, Chapman Research Station. 84MT62, Mt …
Laser Levelling Land For Flood Irrigation, M D. Green, J. P. Middlemas
Laser Levelling Land For Flood Irrigation, M D. Green, J. P. Middlemas
Journal of the Department of Agriculture, Western Australia, Series 4
Since the introduction of laser levelling to Western Australia's South-West irrigation area five years ago, many farmers have benefited from this new and precise method of land-forming.
The use of lasser controlled earthmoving equipment to redevelop irrigated paddocks has led to improved irrigation efficiency and drainage. Less water is used for each irrigation, water is applied more evenly and less labour is needed. many older, grass-dominated paddocks have been reseeded to improve pasture species.
Eradicating Fruit Fly From Carnarvon, Kingsley Thomas Fisher
Eradicating Fruit Fly From Carnarvon, Kingsley Thomas Fisher
Journal of the Department of Agriculture, Western Australia, Series 4
Late last year the Mediteranean fruit fly (Ceratitis capitata Weidemann) was eradicated from Canarvon, Western Australia by using an intergrated programme of sterile insect releases and bait spraying.
The eradication marked the end of a four-year study on the use and effectiveness of the Sterile Insect Technique, a biological control technique which uses an insect pest against itself. such a study can be used as a basis for treating other threatening insect pests, such as the serious cattle pest screw-worm fly, should they be found in Asustralia.
Being a biological control method, the Sterile Insect Technique is an exellent …
Water Quality For Irrigation, P R. George
Water Quality For Irrigation, P R. George
Journal of the Department of Agriculture, Western Australia, Series 4
Although irrigation and salinity problems are frequently inseperable, there is a range of management methods that can be used to handle marginal quality water. Freuently these methods are simple, but require careful planning.
The wide range in tolerance of crops to salinity can be exploiter to ensure that appropriate crops are selected for the water available.
Because crops vary in their sensitivity to salt uptake in the leaves or the roots, watering methods can be changed to avoid problems. For profitable production enough water should be applied to ensure adequate water is available for plant growth as well as to …
Residual Values Of Australian Rock Phosphates, Michael D A Bolland
Residual Values Of Australian Rock Phosphates, Michael D A Bolland
Journal of the Department of Agriculture, Western Australia, Series 4
For years superphosphate has been the cheapest, convenient and most effective way of supplying phosphorus to newly cleared soils in Western Australia's South-West that are acutely deficient in phosphorus. However its effectiveness as a phosphorus source falls markedly after application. Regular applications are needed to maintaine profitable pastures and crops on these soils.
After a big jump in supperphosphate prices in the mid 970s, researchers tested the use of Australian rock phosphates as potentially cheaper alternative phosphorus fertilisers to superphosphate. On the none-leaching sands, as this article shows, none of the rock phosphates was as effective for plant growth as …
The Tolerance Of Cereals To Herbicides., D. G. Bowran
The Tolerance Of Cereals To Herbicides., D. G. Bowran
Experimental Summaries - Plant Research
Herbicides affect not only the weeds present in a crop, but also the crop itself. In the absence of weeds, both positive and negative responses to herbicides have been reported in the literature. The negative responses are the most important, especially if yield is decreased below the economic threshold for herbicide use. Factors which are important in determining the level of crop response to a herbicide include the crop species and variety, the timing of the herbicide, the rate of herbicide and the environmental conditions under which the crop is growing.