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Articles 10471 - 10500 of 11182
Full-Text Articles in Physical Sciences and Mathematics
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
1. Split Applications of Nitrogen and Take-all 84N1. 2. Split Applications of Nitrogen and Take-all 84E2. 3. Split Applications of Nitrogen and Take-all 84MT4. 4. Split Applications of Nitrogen and Take-all 84LG1. 5. Nitrogen and Phosphorus Rates and Take-all 83ES41. 6. Nitrogen and Phosphorus Rates and Take-all 83ES42. 7. Nitrogen and Phosphorus Rates and Take-all 83ES43. 8. Micronutrients (Cu, Zn) and Take-all 83ES39. 9. Micronutrients (Cu, Zn) and Take-all 83ES40. 10. Cu Residual on Wheat and Take-all 67E9. 11. Cu Residual on wheat and Take-all 67E8. 12. Take-all and Manganese/Ammonium Interaction 84LG2. 13. Take-all and Manganese/Ammonium Interaction 84MT5. 14. Take-all …
Foliar Disease Of Wheat, A. G. P. Brown
Foliar Disease Of Wheat, A. G. P. Brown
Experimental Summaries - Plant Research
Wheat leaf diseases were at much reduced levels in 1984. This may have been caused by prolonged summer rain prematurely setting off dispersal of spores and also initiating microbiological breakdown of stubble residues. No survey was carried out in 1984 but a good indication of the seasonal effect can be gained by noting that in the spray-timing experiment at Badgingarra disease levels were extremely low until the end of August some 90 days after sowing. Timing of fungicide for Septoria and Yellow Spot control. 84BA32, 84GE59. Effect of Yellow-spot at Merredin (with S. Trevenen) 84ME57. Yellow-spot is common though not …
Control Of Black Spot; Peas, Potatoes, Lettuce, Eleanor M. Carter
Control Of Black Spot; Peas, Potatoes, Lettuce, Eleanor M. Carter
Experimental Summaries - Plant Research
Please find attached summaries for all experiments completed as at February 1, 1985. Crop Trial number Title Status Peas - 84MT49 Control of black spot Completed. Potatoes - 84PE25 Varietal susceptibility - Powdery scab Completed 84MD46 Varietal susceptibility to soft rot Erwinia Completed 84PE31 Yield loss and disease damage of potatoes due to Erwinia species Aborted 84MD37, 84PE32, 84PE33: Incidence of soft rot Erwinia in potato/cauliflower rotations Completed 84MN31 Yield loss and disease damage of potatoes due to Erwinia species Continuing 84MN32 Varietal susceptibility to soft rot Erwinia Continuing 84MN33 Incidence of soft rot Erwinia in potato crops Continuing Lettuce …
Soil Acidity Survey. Lime Responses In The Central Wheatbelt, P J. Dolling
Soil Acidity Survey. Lime Responses In The Central Wheatbelt, P J. Dolling
Experimental Summaries - Plant Research
Introduction: In 1984 a project commenced to examine the influence of soil acidity on barley production in the main barley growing areas of Western Australia. To carry out some of the projects objectives a soil survey was carried out.
Aims: 1. To select nine sites for liming trials in 1985. 2. To obtain more information about the soil acidity problem in the medium rainfall region of W.A. 3. To determine if there is a relationship between the pH and aluminium content of the soil.
Survey details: Area covered - Katanning and Narrogin District Office (DO) areas. Sampling period - Mid …
The Ecology Of Skeleton Weed .(Chondrilla Juncea L.) In Western Australia , Afghan Thistle (Solanum Hoplopetalum) Ecology, J. Dodd
Experimental Summaries - Plant Research
1. The ecology of skeleton weed .(Chondrilla juncea L.) in Western Australia - 84PE18 Seed production and water use in the glasshouse. 1.2 Seed production and water use of field-grown skeleton weed (84BA17, 84BA18). Water use. 1.3 Germination in relation to soil water content. 2. Afghan thistle (Solanum hoplopetalum) ecology. 2.1 Water relations (84N048). 2.2 Growth in Afghan thistle (84N050). 2.3 Afghan thistle reproductive biology (84N049, 84N063, 84PE19).
Doublegee Seed Dormancy And Longevity, Lupins - Radish Control, Peas - Broadleaf Weed Control, D J. Gilbey, R. Klemm
Doublegee Seed Dormancy And Longevity, Lupins - Radish Control, Peas - Broadleaf Weed Control, D J. Gilbey, R. Klemm
Experimental Summaries - Plant Research
Doublegee - Seed dormancy and longevity. Doublegee seed longevity x depth – 76C9, 75KA8. Lupins - Radish control. Radish control in lupins – 84A4, 84GE54, 84ME45, 84TS35. Pre-emergence grass weed control. Pre-emergence grass control in lupins – 84BA30, 84BA33. Post-emergence grass weed control - 84A5. Simazine rates on qravel soils – 84NO61, 84NA26. Herbicide in peas – 84ME56. Peas – Broad leaf weed control. Broad leaf weed control in grain peas – 84KA30, 84ME46, 84NO64.
Annual Medicago Spp. For Wa Rangelands - Selection And Establishment Techniques, G Gintzburger
Annual Medicago Spp. For Wa Rangelands - Selection And Establishment Techniques, G Gintzburger
Experimental Summaries - Plant Research
1) Exp 84KG1: Annual Medicago spp, for W.A. Rangeland. Ecotype testing with seeds sown (Woolibar Station). 2) Exp 84KG2: Pod seeding of annual Medics and response to phosphate fertilisation (I). (Woolibar Station). 3) Exp 84KG3: Serena Medics on Goldfield Rangeland - Pod seeding and pitting (Jeedamya Station). 4) Exp 84KG4: Pod seeding of annual Medics and response to phosphate fertilisation (II). (Woolibar Station). 5) Exp 84CA1: Establishment and survival of annual Medics - Pod seeding on W.A. rangelands simulating aerial seeding (Quobba Station). 6) Exp 84CA2: Annual Medicago spp. for W.A. rangeland - Ecotypes testing with seed sown (Hamelin Station). …
Water Use Of Alternative Wheatbelt Crop Species, A P. Hamblin, M W. Perry, D Tennant, Neil C. Turner Dr
Water Use Of Alternative Wheatbelt Crop Species, A P. Hamblin, M W. Perry, D Tennant, Neil C. Turner Dr
Experimental Summaries - Plant Research
84M5, 84M6, 84M7. Location: Merredin Research Station Merredin, Western Australia. Three experiments were conducted to measure the productivity and water use of alternative wheatbelt crop species on contrasting soil types in a dry mediterranean environment. Crop species investigated were wheat, barley, cereal rye, narrow leafed lupin and field pea. These were grown on three contrasting soil types, a red-brown earth, a sandy loam over clay and a deep loamy sand; all soils occurring within close proximity to each other. Detailed measurements were made of meteorological conditions, dry matter production, leaf area, root growth, soil water profiles, light interception and plant …
Nitrogenous Fertilisers For Cereals, M G. Mason
Nitrogenous Fertilisers For Cereals, M G. Mason
Experimental Summaries - Plant Research
Nitrogenous fertilisers for cereals: Evaluation of the nitrification inhibitor- DIDIN – 84BA2, 84TS2. Nitrogen fertiliser requirement in alternate crop-pasture rotation – 778BA1, 78WH2. Effect of Agras No. 1 on soil pH and wheat yield – 80M1, 80N3, 80WH3. Late nitrogen sprays for wheat – 84M2, 84MT1, 84WH1. Rates of nitrogen on wheat - soil test – 84MO1, 84MO2, 84MO4, 84MO5, 84MO6. Effect of stubble treatment on nitrogen fertiliser requirement – 78M2. Nitrogen fertiliser requirement in a lupin-wheat rotation – 81LG29. Rates of nitrogen on wheat – 84ME47, 84ME48. Nitrogen response in wheat on grey clay – 84MO7. Nitrogen rate on …
Ecology Of Skeleton Weed (Chondrilla Juncea) In Western Australia, F D. Panetta
Ecology Of Skeleton Weed (Chondrilla Juncea) In Western Australia, F D. Panetta
Experimental Summaries - Plant Research
For the first time a laboratory for conducting this type of research has been established in South Perth, and it has been possible to type plants from mature leaf material. This obviates the necessity of waiting for plants to seed to be able to identify them. A total of six new collections were identified as belonging to either the broad-leaf or narrow-leaf forms, the locations for which are given in Table l.l..
Seed viability. To determine the amounts, viability and dormancy status of seeds produced by field-grown plants during summer and autumn months. Time course of seed production by field-grown …
Molybdenum Nutrition, M M. Riley
Molybdenum Nutrition, M M. Riley
Experimental Summaries - Plant Research
Field trials. 1. Residual value of Molybdenum on an acid soil - 81NO40. 2. Residual value of Molybdenum on an acid soil - 81M2. 3. Residual value of Molybdenum on an acid soil - 81LG12. 4. Residual value of Molybdenum on an acid soil - 83ME82. 5. Residual value of Molybdenum on and acid soil - 82NO7. 6. Residual values of different Molybdenum sources - 84ME10. 7. Residual values of different Molybdenum sources - 84GE49. 8. Molybdenum requirements of wheat and lupins - 83ME10. 9. Molybdenum requirements of wheat, triticale and lupins - 84ME8. 10. Forms and rates of soil …
Grain Legume Agronomy Program, G H. Walton
Grain Legume Agronomy Program, G H. Walton
Experimental Summaries - Plant Research
Lupin Agronomy - varieties x environment - Wongan Hills R.S., Badgingarra R.S., Newdegate R.S., Mt Barker R.S. Lupin Agronomy - morphology x split seed – Mr J. wood, “Karakin”, Lancelin. Lupin Agronomy - Erregulla regeneration and rotation – Lancelin, Moora, Watheroo. Grain legume species comparison – 84ES1, 84LG38, 84MO10, 84ES1. Field pea evaluation – varieties. Aim: To compare the biological and seed yield adaptation to environment between morphological types of field pea. Field pea agronomy – 84KA18, 84LG25, 84ME42, 84MO33, 84MO34, 84N16, 84SG20, 84SG28. Sowing time x seed rate. Pea and wheat response to applied P – 84LG24, 84ME43, 84NO46, …
Summary Of Medic-Rhizobium Field Experiments 1983 – 1984, J G. Howieson
Summary Of Medic-Rhizobium Field Experiments 1983 – 1984, J G. Howieson
Experimental Summaries - Plant Research
Trials 83ME9, 83ME87, 82ME22, 82ME22A, 82ME23.
Method.
Comments
Breeding Wheat Varieties For Acid Soils, I R. Barclay
Breeding Wheat Varieties For Acid Soils, I R. Barclay
Journal of the Department of Agriculture, Western Australia, Series 4
Wheat varieties with improved tolerance of acid soils cold increase yeilds be perhaps 20 per cent or more over a substantialarea ofWestern Australia's eastern wheatbelt.
Aluminium toxicity is probably the main cause of poor root growth and therefore reduced yields on these soils.
Die Mongoleisammlung Im Herbarium Der Martin-Luther-Universität Halle-Wittenberg, Werner Hilbig
Die Mongoleisammlung Im Herbarium Der Martin-Luther-Universität Halle-Wittenberg, Werner Hilbig
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Das Herbarium der Martin-Luther-Universität Halle-Wittenberg besitzt eine umfangreiche Sammlung von Pflanzen aus der Mongolei. Das im wesentlichen während gemeinsamer deutsch-mongolischer biologischer Expeditionen gesammelte Material liegt als selbständige Sammlung vor. Sie enthält ca. 8000 Bögen höherer Pflanzen und umfaßt ca. 1300 determinierte Arten. Ein bedeutender Teil wurde von Spezialisten bestimmt. Umfangreich sind auch die Aufsammlungen von Flechten und Moosen , geringer die von Pilzen. Es konnten hierbei wie bei den höheren Pflanzen zahlreiche Erstnachweise erbracht werden.
In der Hauptsammlung des Herbariums sind Herbarbelege v on Pflanzen des mongolischen und südsibirischen Raumes aus dem 19. Jahrhundert enthalten, z. T. von A . …
Historical Crop / Climate Relationships In South Dakota, D.G. Kenefick, J.C. Harlan, K.K. Weischedel, P.D. Evenson
Historical Crop / Climate Relationships In South Dakota, D.G. Kenefick, J.C. Harlan, K.K. Weischedel, P.D. Evenson
Agronomy, Horticulture, and Plant Science Publications
Crop performance and climatic records were collated for high production counties in South Dakota to evaluate the effects of temperature and precipitation on yields. The crops involved were corn, soybeans, sorghum, oats, spring wheat, and winter wheat. Records were compared for the period from 1965 to 1982. The computer data file for each county includes seven climatic parameters, dates of plant development, adjusted yield-and yield rank by year. The crop/climate record for the 17-year period was evaluated in sixteen counties per crop each year. Thus, 272 county x year observations were made for each crop, except for soybeans which involved …
Horticultural Crops - Grapevines, Capsicum, Fruit Trees, Lucerne., D J. Gilbey, R. Klemm
Horticultural Crops - Grapevines, Capsicum, Fruit Trees, Lucerne., D J. Gilbey, R. Klemm
Experimental Summaries - Plant Research
Crabgrass control in vines - 82SR4, 83SR4 Weed control in capsicums - 83MD10, 84MD6. Herbicide tolerance - fruit - 82MN36. Crabgrass control in lucerne - 82PE60, 83PE6, 84PE4.
Horticultural Crops; Grapevines, Capsicum, Fruit Trees And Lucerne, D J. Gilbey, R Klemm
Horticultural Crops; Grapevines, Capsicum, Fruit Trees And Lucerne, D J. Gilbey, R Klemm
Experimental Summaries - Plant Research
Crabgrass control in vines – 82SR4, 83SR4. Weed control in capsicums - 83MD10, 84MD6. Herbicide tolerance – fruit – 82MN36. Crabgrass control in lucerne - 82PE60, 83PE6, 84PE4.
Modifying Fertiliser Practices, J S. Yeates, D. M. Deeley, M. F. Clarke, D. Allen
Modifying Fertiliser Practices, J S. Yeates, D. M. Deeley, M. F. Clarke, D. Allen
Journal of the Department of Agriculture, Western Australia, Series 4
If modified fertiliser practices are adopted phosphorus losses from the Peel-Harvey catchment can be reduced. Farmers can save money on fertiliser applications and the need for more expensive catchment management measures to reduce algal pollution of the estuary will be avoided.
Research data available so far indicate that, with farmer co-operation and the use of the new slow release fertiliser New Coastal Superphosphate, long-term phosphorus application rates can be reduced by 30-40 per cent - and possibly even halved - without lowering agricultural production. This will also reduce phosphorus loss to drainage water.
Although much of the research since 1982 …
Soil Acidity On High Rainfall Pastures, J S. Yeates, D. A. Mcghie, I. R. Wilson
Soil Acidity On High Rainfall Pastures, J S. Yeates, D. A. Mcghie, I. R. Wilson
Journal of the Department of Agriculture, Western Australia, Series 4
Most soils of the high rainfall area of south-western Western Australia are naturally acis.
The most acid group of soils, the peaty sands. have been routinely limed before subterranean clover pastures were established since research in the 1950s showed that poor Rhizobium nodulation could be overcome with the application of about 2 tonnes per hectare of coastal limesand.
Pasture Species Evaluation In The Medium Rainfall Zone, C W. Thorn, C K. Revell, S Davies, I Rose
Pasture Species Evaluation In The Medium Rainfall Zone, C W. Thorn, C K. Revell, S Davies, I Rose
Experimental Summaries - Plant Research
The effect of mechanical defoliation on the production of legume species in the Katanning region - 84KA26. The effect of grazing on the seed production of legume species - 84KA27. The effect of gypsum and establishment techniques on Circle Valley medic - 84KA29. The effect of gypsum, tillage and nitrogen on cereal yields in a continous crop system - 84KA28. The effect of gypsum on cereal crop yield - Katanning, E. Garlick Kwobrup, D. Webse. Pasture probe evaluation. Aim: To determine the suitability of the Vickery single probe earth plate capacitance meter for determining pasture production.
Sulphur Nutrition Of Pastures. Potassium Nutrition Of High Rainfall Pastures On Deep Sands, J. S. Yeates, M. F. Clarke
Sulphur Nutrition Of Pastures. Potassium Nutrition Of High Rainfall Pastures On Deep Sands, J. S. Yeates, M. F. Clarke
Experimental Summaries - Plant Research
A. Sulphur - High Rainfall. 1. Sources, rates, time of application of sulphur to pastures - 80AL1, 80AL4, 80AL48. 2. Sulphur nutrition of pastures - 83PE36. 3. S sources and rates on sandy soils of the high rainfall areas - 84HA20, 84HA27. 4. Maintenance of S on pastures on sandy soils - 84AL35, 84HA19, B4HA26. B. Sulphur - Low Rainfall. 1. Sulphur on pastures - 82AL9, 82KA4. C. Potassium. 1. Sources, rates, time of application of potassium on high rainfall deep sand pastures - 80AL6.
Molybdenum Deficiency In The Wheatbelt, M M. Riley
Molybdenum Deficiency In The Wheatbelt, M M. Riley
Journal of the Department of Agriculture, Western Australia, Series 4
The trace element molybdenum is needed in very small amounts in nitrogen metabolisms of crops and pastures. One of the projects that started as a result of the overall soil acidity research programme was the examination of molybdenum deficiency on acid soils throughout the South-West of Western Australia.
Soil Acidity In The Eastern Wheatbelt, W M. Porter, I. R. Wilson
Soil Acidity In The Eastern Wheatbelt, W M. Porter, I. R. Wilson
Journal of the Department of Agriculture, Western Australia, Series 4
In Western Australia parts of the sandplain of the eastern wheatbelt are very acid and produce poor crops, It was not until the late 1970s that the effect of soil acidity on the productivity of the sandplain soils was examined in any detail.
Since then researchers have learnt a great deal about the nature of soil acidity in the eastern wheatbelt sandplain soils and can suggest management options for farmers.
This article discisses the problem of the very acid soils. It does not deal with the moderately acid, medium textured soils of the eastern wheatbelt. Although the acidity of these …
Barley Production And Soil Acidity, P J. Dolling, W. M. Porter
Barley Production And Soil Acidity, P J. Dolling, W. M. Porter
Journal of the Department of Agriculture, Western Australia, Series 4
One of the causes of reduced plant yields on acid soils is aluminium toxicity. because barley is extremely sensitive to this mineral, a project started last year to examine the influence of soil acidity on barley production in the main barley growing areas of Western Australia.
This article discusses some of the background information on the project and its aims.
Phosphorus Nutrition, M D A Bolland, M J. Baker
Phosphorus Nutrition, M D A Bolland, M J. Baker
Experimental Summaries - Plant Research
Trial No.: 84E31 Location: Esperance Downs Research Station.Results: Fertilizer: TSP = triple superphosphate; NCRP = North Carolina rock phosphate; DRP = Duchess rock phosphate. Cultivation: UC = fertilizer applied to the soil surface and left there: C = fertilizer cultivated into the top 10 cm of soil with a rotary hoe after application to the soil surface. Trial No.: 84M63. Location: South Bodallin (Merredin Research Station). Results: TSP = triple superphosphate; NCRP = North Carolina rock phosphate; DRP = Duchess rock phosphate. UC = fertilizer applied to the soil surface and left there; C = fertilizer mixed in to the …
Oilseed Agronomy, A G. Mckay, R J. Larsen
Oilseed Agronomy, A G. Mckay, R J. Larsen
Experimental Summaries - Plant Research
Potential of triazine tolerant rapeseed – 84AL44, 84MA23, 84WH31.
Rates and times of triazines on triazine tolerant rapeseed – 84MA22, 84WH33.
Fitness of triazine tolerant and susceptible F1's - 85GL7.
Cleaning crops for cereals – 84MA2.
Interstate variety evaluation – 84MA24, 84MT42,84WH32.
Chemical Manipulation Of Pasture Leys To Regulate Composition Ll., C W. Thorn, M W. Perry, P Fievez
Chemical Manipulation Of Pasture Leys To Regulate Composition Ll., C W. Thorn, M W. Perry, P Fievez
Experimental Summaries - Plant Research
Introduction.
Materials and methods.
Experimental design.
Sowing.
Herbicides.
Measurements.
Results.
Discussion.
Conclusions.
Sulphur Needs Of Crops And Pastures, J S. Yeates
Sulphur Needs Of Crops And Pastures, J S. Yeates
Journal of the Department of Agriculture, Western Australia, Series 4
Sulphur deficiency has long been recognised as a potential problem of legume pastures in the higher rainfall areas (over 750 mm a year) of south-west Western Australia. Before the introduction of granulated superphosphate (about 1970), sulfer deficiencies commonly developed in spring on susceptible soils despite autumn applications of superphosphate (containing about 10.5 per cent sulphur).
In loww and medium rainfall areas sulphur deficiency is rarely reported, at least partly because of annual superphosphate applications. However large areas of the sandy-surfaced soils of Western Australia would become sulphur deficient for pastures and crops if sulphur inputsd in fertilisers were substantially reduced. …
Lupins Wheat Rotation Long Term Rotation Trials, I Rowland, W Hawkins
Lupins Wheat Rotation Long Term Rotation Trials, I Rowland, W Hawkins
Experimental Summaries - Plant Research
Long term rotation trials - 66M29, 67Cl3, 67N4, 68E5, 68SG5, 73SG16.
Lupins Wheat Rotation - 80TS3, 82TS2, 82M26.