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Articles 781 - 810 of 1183
Full-Text Articles in Earth Sciences
Effect Of Various Crop And Pasture Species On The Growth Of A Subsequent Wheat Crop, N Delroy, J W. Bowden, I Rowland, M Ralph, R Lunt, M Baker
Effect Of Various Crop And Pasture Species On The Growth Of A Subsequent Wheat Crop, N Delroy, J W. Bowden, I Rowland, M Ralph, R Lunt, M Baker
Experimental Summaries - Plant Research
83WH29: The effect of various crop and pasture species on the growth of a subsequent wheat crop. Aim: To characterise the effect of various crop and pasture species on the growth and yield components of a subsequent wheat crop with special emphasis on the nitrogen nutrition of that crop. To provide validation data for modelling wheat growth and nitrogen uptake. Measurements: Factors to be monitored through time were; Soil moisture profiles; Mineral nitrogen profiles; Root growth profiles; Top growth and nitrogen uptake; Development score; Incidence of disease and pests.
Seasonal notes, trial design, weed diseases and pests. Results: The results …
Seed Set Control. Competition. Herbicide Efficiency. Herbicide Trials., J E. Holmes, R L. Thomas
Seed Set Control. Competition. Herbicide Efficiency. Herbicide Trials., J E. Holmes, R L. Thomas
Experimental Summaries - Plant Research
Seed set control
83M60 - Barley grass
83Na54 – Barley grass
83A4 – Rye grass
83N50 – Brome grass
Competition
84A12 – Brome grass
84A10 – Silver grass
84A6 – Barley grass
Herbicide efficiency
84A7 - Brome grass : Hoegrass pre-emergent
Herbicide trials
84A11 – Barley grass : Glean mixture
84A13 – Barley grass : Isoproturon
84A15 – Brome grass : Glean mixtures
84A16 - Brome grass : Hoegrass, Donsanex, AC222293
84A9 – Silver grass : lsoproturon, Yield, trifulualin,
AC222293, Dosanex
84A14 – Rye grass : Hoegrass following Glean
84A19 – SD-95481 : Grasses controlled
84A20 – CME12701 : Evaluation …
Long Term Minimum Tillage Investigations, Stubble Management, Deep Ripping, R J. Jarvis, L G. Butcher
Long Term Minimum Tillage Investigations, Stubble Management, Deep Ripping, R J. Jarvis, L G. Butcher
Experimental Summaries - Plant Research
Direct drilling Long term minimum tillage investigations (1) Continuous cropping – 77A16, 77A18, 77MT15, 77WH17, 77WH13, 78M25. (2) Rotational cropping – 77A43, 77E52, 77M35, 77M56, 77MT51, 77WH8. Stubble management – 79M7, 79WH6, 82M34, 84M1, 82LG4, 82LG46 (82KD1). Deep ripping - 82M35 in Minimum Tillage Rotation section also contains a deep ripping treatment. 77WH17, 80A44, 80NO46, 81M45, 81NO3, 81NO4, 82GE37, 82GE38, 82M30, 82M46, 82M60, 82ME38, 82N32, 82WH49, 84E24, (84C42, 84C43, 84C44, 84C45, 84C46) Eradu Sandplain – ECRS, 84E23, 84E24, 84JE43, 84JE44, 84LG37, 84M38, 84NO58, 84WH2, 84WH3, 84WH39. Additional deep ripping research is included in summaries by W. Bowden, D. Tennant, J. …
Tackling The Problem Off The Farm, C M. Croft
Tackling The Problem Off The Farm, C M. Croft
Journal of the Department of Agriculture, Western Australia, Series 4
Methods of redusing phosphorus losses from the catchment soils of the Peel-Harvey esturine system have been discussed in other articles in this Journal.
This article briefly discusses a range of 'off the farm' techniques to improve phosphorus flushing from Peel Inlet or Harvey Estuary to the sea and to treat the phosphorus and the algae. These techniques were among more than 100 management options evaluated by the Peel-Harvey Study Group.
Manganese Nutrition Of Cereals, J W. Gartrell
Manganese Nutrition Of Cereals, J W. Gartrell
Experimental Summaries - Plant Research
Acidifying N fertilizers on availability of native soil Mn, and on fertilizer Mn applied in two forms and two mixing methods 84NO3. Acidifying N fertilizers Mn sources, methods of incorporation 84NO4. Acidifying N fertilizers, Mn sources, methods of incorporation 84NO5. Varietal differences among wheats in ability to absorb and utilize manganese in deficiency situations 84NO6. Manganese residual with acidifying nitrogen fertilizers 84NO7.
Low Rainfall Pasture Project, M. A. Ewing
Low Rainfall Pasture Project, M. A. Ewing
Experimental Summaries - Plant Research
1. Variety experiments: (a) Rows 84M39. (b) Small Plots 84M40. (c) Large Plots 84M41, 84WH40, 84N22, 84LG39, 84M56, 84M57. 2. Pasture establishment systems: 84TS38, 84M61. 3. Pasture grazing (defoliation) experiments: 84M43, 84LG34, 84LG33, 84M42. 4. Cereals following pastures: 84ME47. 5. Pasture wheat rotaton experiments: 82WH39, 82M47. 6. Medic rhizobial studies - see report of J. Howieson. 7. Lupins - see report R. French.
Trace Element Nutrition, M M. Riley, J W. Gartrell, R. F. Brennan
Trace Element Nutrition, M M. Riley, J W. Gartrell, R. F. Brennan
Experimental Summaries - Plant Research
South Perth Long term copper trial - Newdegate Research Station – 66N14. Copper, zinc & sulphur residual with DAP for wheat – 78WH66. Copper and zinc residual with DAP – 78MO36. Zinc residual with high analysis N.P. fertilizer for wheat – 79ME22, 79ME23, 80MO8, 80NO31. Cereal responses to zinc Copper and nitrogen interactions on wheat varieties – 83GE2, 83WH1. Barley responses to drilled trace elements – 83BR4, 83BR5. Manganese on wheat – 82NO8. ESPERANCE Zinc residual with high analysis N.P. fertilizer for wheat – 83ES35. Methods of copper application on new land – 83LG6. Copper spray and nitrogen rate applications …
Summary Of Rhizobium Experiments, J G. Howieson
Summary Of Rhizobium Experiments, J G. Howieson
Experimental Summaries - Plant Research
The main emphasis for rhizobial work in 1984 was on the acid tolerance of medic Rhizobium. The experimental programme in the field was greatly expanded to include testing of some 160 isolates collected from Sardinia in May 1984. Broadacre sowings of acid tolerant strain WSM 419 were undertaken as a preliminary step to its commercial release in 1985. Glasshouse work in 1984 was dedicated to a more intensive investigation of the factors contributing to the enhanced nodulating ability of M. polymorpha and M. murex on acid soils. As well, a simple technique for identifying acid tolerant strains of rhizobia in …
Soil Acidity In The Eastern Wheatbelt, W Porter, S Carr, J Garlett
Soil Acidity In The Eastern Wheatbelt, W Porter, S Carr, J Garlett
Experimental Summaries - Plant Research
1. Surface incorporated lime: 80M30 - Wheat. 82ME54 - Lupins. 82TS33 - Wheat. 80M31 - Wheat. 81M5 - Medic. 2. Subsoil banded lime: 81M54 - Lupins. 3. Whole profile incorporated lime: 82M5 - Wheat. 82ME10 - Wheat. 4. Acid tolerant species: 84ME50 - interaction with N. 84ME51 - interaction with PP. 84ME52 - growth on non-acid sand.
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.
Relative Crop Yields On Different Soil Types, Pea And Lupin, R French
Relative Crop Yields On Different Soil Types, Pea And Lupin, R French
Experimental Summaries - Plant Research
1. Relative crop yields on different soil types - 84M50, 84M51, 84M52, 84M53. 2. Pea and lupin time of sowing trials - 84JE42, 84LG32, 84LG31, 84ME55, 84ME53, 84ME54, 84N065. 3. Effect of P-Pickel on Pea Nodulation - 84M64. 4. Lupin Agronomy - 84M55, 82ME52.
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). …
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 …
Nitrogen Flows From Several Species And Varieties Of Legume, John Hamblin Dr
Nitrogen Flows From Several Species And Varieties Of Legume, John Hamblin Dr
Experimental Summaries - Plant Research
Trial 83C24: N flows from several species and varieties of legume.
Trial 83C27: The effect of seeding rate, planting and variety on the residual value of lupins.
Trial 84C25: Small rotation trial for 1985.
Trial 84C34: Nitrogen response on large rotation plots at ECRS.
These trials were carried out in collaboration with: Mr R. Delane, and with assistance from: Mr. T. White, Ms. A. Bishop.
Crop Oil Additives To Herbicides, R Madin, A Lindsay
Crop Oil Additives To Herbicides, R Madin, A Lindsay
Experimental Summaries - Plant Research
Crop oil additives to herbicides - 84LG42.
Umbrella grass (Cyperus eragrostis) control in irrigated pasture - 85HA1.
Stinkwort control - 85NO5, 85PE14.
Ice plant (Mesembryanthem nodiflorum) control in crop and pasture - 83SG20, 83SG21.
Long Term Pasture Manipulation Trials, C W. Thorn, C J. Stockdale
Long Term Pasture Manipulation Trials, C W. Thorn, C J. Stockdale
Experimental Summaries - Plant Research
A.W.I.R.C Project 498/0029 Pasture manipulation on the Esperance sandplain. Introduction In 1981 a 2 pasture: 1 crop rotation trial incorporating four pasture manipulation treatments was commenced on the Esperance Sandplain to determine: 1. the effect of herbicide manipulation of pasture composition on pasture and animal production. 2. the effect of grass control on take-all levels in a following cereal crop. 3. the effect of grass control on desicantha weevil levels in a following cereal crop. Rotation trial for wheat comparing a pure clover ley with a mixed pasture ley on the Esperance sandplain - Esperance Down Research Station. The effect …
Seed Ecology Of Weeds, A H. Cheam
Seed Ecology Of Weeds, A H. Cheam
Experimental Summaries - Plant Research
1. 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
2. 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
3. Emergence of weed seedlings in relation to soil type and cultivation 82PE32 South Perth
4. Changes in the number of viable dock seeds in soil under different soil surface treatments 83V2 Vasse …
Soil Acidity - High Rainfall Pastures. Lime On Old Land Pastures - Field & Glasshouse Experiments, J S. Yeates, M. F. Clarke, C S. Fang, D A. Tooke
Soil Acidity - High Rainfall Pastures. Lime On Old Land Pastures - Field & Glasshouse Experiments, J S. Yeates, M. F. Clarke, C S. Fang, D A. Tooke
Experimental Summaries - Plant Research
Soil Acidity - High Rainfall Pastures (funded by the Australian Meat Research Committee). Lime on old land pastures. 1. Field experiments - 80BU13, 80BU14, 81AL10, 81AL12, 81AL16, 81BU18, 81BY18, 81BY19, 81BY25, 81BY26, 82AL4, 82AL5, 82AL55, 82BU7, 82BU8, 82HA35, 82HA36, 82PE1, 83AL7, 83AL9, 83AL10, 83AL11, 83AL13, 83AL14, 83BU25, 83BU26, 83BY29, 83HA19, 83HA41, 84BU9, 84BY36, 84BY37, 84HA21. 2. Glasshouse experiments - 84GL4. Investigation of factors involved in lime responses on a new land acid peaty sand. 84GL7, 84GL8. Investigation of factors involved in lime responses on old land high rainfall area pastures.
Investigation Of Root And Foliar Diseases Associated With Decline In Wheat Yields On Sandplain, Jill Wilson
Investigation Of Root And Foliar Diseases Associated With Decline In Wheat Yields On Sandplain, Jill Wilson
Experimental Summaries - Plant Research
A Wheat Industry Research Council Project. In 1984 research was conducted in collaboration with Dr John Hamblin, Dr Allan Brown, Mr Rob Delane and Dr Mark Sweetingham. 1. Field Trial (GE84Cl5): Interactions between disease and agronomic factors, particularly rotation with lupins, and deep tillage. ( i) Yields, (ii) Incidence of root diseases, (iii) Root length and diseased root length, (iv) Leaf disease. 2. Farm Survey (sites from trial 84GE57 of Dr Allan Brown) Incidence of Common Root Rot
Hoegrass, Herbicide, Plant Growth And Soil Activity Of Glyphosate, T Piper
Hoegrass, Herbicide, Plant Growth And Soil Activity Of Glyphosate, T Piper
Experimental Summaries - Plant Research
Hoegrass tolerant ryegrass. Herbicide incorporation. Plant growth one season after herbicide use. Soil activity of glyphosate. Growth of lupins on plots treated with herbicide for each of the two previous seasons - Trials carried out at Geraldton, Wongan Hills and Wickepin measured the amount of pasture produced on plots that had been treated with herbicides while in crop the previous season.
Sources Of Phosphorus Trials. Miscellaneous Trials., J W. Bowden, R Lunt, M Baker
Sources Of Phosphorus Trials. Miscellaneous Trials., J W. Bowden, R Lunt, M Baker
Experimental Summaries - Plant Research
I Sources of phosphorus work. Pasture trials - 77MT1 - New land (1977) continuous pasture trial, gravel. 80BA6 - Ley 1984. Serradella weeds and lupin regrowth, sand. 84N069 - New land (1984) pasture, gravel. Crop trials - 76WH9 - New land (1976) run down on one dressing of P W.L.S. 76WH10 - Young land Topdressed annually, biennially and once off. 76WH14 - Old land Topdressed anually and biennially. 76N4 - New land (1976) Topdressed annually biennially and once off, gravel. 84M63 - New land (1984) Once off dressing. Trials not sampled - 77WH2 - Old land Sources trial 77MT2 - …
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 …
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 …
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.
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.
Annean Station Management Plan, A A. Mitchell
Annean Station Management Plan, A A. Mitchell
Resource management technical reports
Annean Station's carrying capacity has been estimated at 8,340 sheep on its 168,539 hectares. The halophyte pastures of Carnegie Land System were in good condition while those of Mileura Land System were in poor condition. The wandarrie pasture of the Belele Land System was in fair to poor condition. This system comnprises 34 per cent of Annean's area and is estimated as capable of presently carrying 2,900 stock.
Clover Scorch Screening, Root Rot Screening, Bluegreen Aphid Screening, Red Legged Earthmite Screening Experiments, Evaluation Of Medicago Murex, D J. Gillespie
Clover Scorch Screening, Root Rot Screening, Bluegreen Aphid Screening, Red Legged Earthmite Screening Experiments, Evaluation Of Medicago Murex, D J. Gillespie
Experimental Summaries - Plant Research
Clover scorch screening. Root rot screening. Bluegreen aphid screening. Red legged earth mite screening experiments. Evaluation of Medicago murex.
A Brief Study Of Land Capability In The Coastal Region Of The Shire Of Harvey, Department Of Agriculture, Western Australia. Soil Conservation Service, M R. Wells, P A. Hesp
A Brief Study Of Land Capability In The Coastal Region Of The Shire Of Harvey, Department Of Agriculture, Western Australia. Soil Conservation Service, M R. Wells, P A. Hesp
Resource management technical reports
No abstract provided.
Hydrological Studies In Soil Salinity, C J. Henschke
Hydrological Studies In Soil Salinity, C J. Henschke
Resource management technical reports
Investigations involved examination of near-surface indurated layers to investigate their role in saltland formation. It was found that groundwater could move readily through this layer due to the presence of macro-pores. Close examination of apparently impermeable pallid zone clays, shows that decayed tree roots and large diameter voids provide a continuous pathway for the veritical transport of saline water from deeper aquifers.
Ecology Of Skeleton Weed (Chondrilla Juncea) In Wa. Population Studies On Pennyroyal (Mentha Pulegium)., F D. Panetta
Ecology Of Skeleton Weed (Chondrilla Juncea) In Wa. Population Studies On Pennyroyal (Mentha Pulegium)., F D. Panetta
Experimental Summaries - Plant Research
The ecology of skeleton weed - Cunderdin, Tammin, Narembeen (2 sites), Chapman valley, Eradu, East Badgingarra, Moorine Rock. Fate of buried seeds: Chapman, Merredin, Esperance Research stations. Population studies on pennyroyal: Seed production - Denmark, Mount Barker, Frankland. Sizes of seed banks of pennyroyal in pasture and ruderal situations – Denmark, West Denmark, Karri Heights, Narrikup (1), Frankland River. Ruderal populations – Mt Barker (1), Frankland, William bay, East Denmark, Narrikup (2), Denbarker, Mt Barker (2). Seedling emergence and survival – Denmark, Mt Barker, Frankland. Genetic differences between populations.