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Articles 2461 - 2490 of 2909
Full-Text Articles in Physical Sciences and Mathematics
Cultivar Evaluation In High Rainfall Areas, D J. Gillespie
Cultivar Evaluation In High Rainfall Areas, D J. Gillespie
Experimental Summaries - Plant Research
1. Trikkala Evaluation Trial 76MT3. A joint trial with D.A. Nicholas. The trial's aim is to compare the competitive ability under grazing of Trikkala and Yarloop clover on a waterlogged new land site. The competitive ability to be measured in the presence and absence of clover scorch. (Kabatiella caulivora). 2. Pasture deterioration. Field experiments. Three trials established in 1975 to determine whether various cultivation techniques could control root rot and. subsequent pasture deterioration have now concluded. 3. Lucerne productivity and persistence. 4. Effects of saline irrigation water on pasture production. During the 1976/77 irrigation season the effects on pasture production …
Take-All Of Cereals And Cereal Seed Dressings, G D. Macnish
Take-All Of Cereals And Cereal Seed Dressings, G D. Macnish
Experimental Summaries - Plant Research
Take-all of cereals. Take-all surveys. Effect of nitrogen sources on take-all: 76LG25 Wheat, 77MT19 Wheat, 77JE31 Barley, 77MT17 Barley, 77LG20 Oats, 77JE5 Wheat, 77LG6 Wheat, 77E4 Wheat, 77ES6 Wheat, 77GE10 Wheat. Effect of rates of (NH4)2 SO4 and Na NO3 on take-all - 77E6 Wheat, 77ES Wheat. Effect of rates of (NH4)2 SO4 on take-all - 77LG7 Wheat, 77JE6 Wheat. Soil pH and take-all - 77LG25 Cleaning crops and take-all control - 76E6, 76N5, 76M47, 76A7, 76LG27. Spray-fallow and time of planting - 76GE35 9 76LG26, 76LG26, 76LG38. Effect of rates of sowing on take-all - 77JE7. Long term rotations …
Nitrogenous Fertilisers For Cereals - Results From 1977 Trials On Wheat, Oats And Barley, M. G. Mason
Nitrogenous Fertilisers For Cereals - Results From 1977 Trials On Wheat, Oats And Barley, M. G. Mason
Experimental Summaries - Plant Research
Rates of Nitrogen on Wheat, Oats and Barley - Soil Test. In this, the third year of this programme, 44 sites were selected and soil sampled during February - March. Thirty seven of these trials consisted of four replications on wheat only and the other seven consisted of three replications on wheat, oats and barley. All reps were soil sampled separately. In each rep. of the 37 trials, 20 samples were taken to 10 cm depth with pogo stick samplers. In the. other seven trials 50 samples per rep. were taken. In addition, from three holes at random across each …
Groundwater In The Wheatbelt, E P. O'Driscoll
Groundwater In The Wheatbelt, E P. O'Driscoll
Journal of the Department of Agriculture, Western Australia, Series 4
In general six factors affect the occurence of groundwater; rainfall, topography, rock type, rock structurs, vegetation, and local evaporation.
Variation in even one of these can affect the potential yield of a bore or well, the groundwater salinity, and even whether any groundwater occurs at all.
State Of The Fisheries Report 1975, Department Of Fisheries And Wildlife, Western Australia
State Of The Fisheries Report 1975, Department Of Fisheries And Wildlife, Western Australia
Status Reports of the Fisheries and Aquatic Resources
The total value of the fisheries of Western Australia is the highest of any of the States, and the Western Australian rock lobster fishery is the most valuable single fishery in Australia.
The Oombulgurri Project Clancy Committee Report, D J. Clancy, P Mccosker, C Mayberry, A J. Millington, P Ryan
The Oombulgurri Project Clancy Committee Report, D J. Clancy, P Mccosker, C Mayberry, A J. Millington, P Ryan
All other publications
In early August the Oombulgurri community requested assistance in the following terms.
"On behalf of the Oombulgurri Community, we invite assistance in developing the grain and pasture cropping at Oombulgurri. We have experimented with peanuts, sorghum, and many varieties of vegetables. This has tested the reality of hopes to expand acreage and varieties to become self-sufficient in stock feed. The Farm and Garden Guild now needs the expertise of your services to plan a four-year programme. vie need assistance in choosing from the many options, opinions and advices available from Australia and elsewhere, for grain production, pastures, methods appropriate to …
Bulletin 4002 - Trickle Irrigation For Farms, K Cole
Bulletin 4002 - Trickle Irrigation For Farms, K Cole
Bulletins 4000 -
The continued demand for, and use of trickle irrigation is proof of the inherent potential and performance of this form of irrigation.
Originally it was used in glasshouses and nurseries but it is now widely adapted to orchards, vegetable and other horticultural small crops and home gardens.
Although research is being actively pursued in the design and use of trickle irrigation it is now beyond the experimental stage as a technique and is an accepted and proven technique of watering many types of crop.
Bulletin No 3993 - The Control Of Saffron Thistle, G. A. Pearce
Bulletin No 3993 - The Control Of Saffron Thistle, G. A. Pearce
Bulletins - 3000 - 3999
Saffron thistle is a primary noxious weed and is widespread throughout the drier parts of Western Australia. When growing in pasture its prickly growth habit discourages animals from grazing amongst it so that its presence results in the loss of feed. In crops it reduces yield and results in dockage when seed is found in harvested grain.
Fisheries Report No 26 - Report On Lake Chandala With Recommendations Of Its Importance As A Fauna Reserve, Alan Tingay, Susan R. Tingay
Fisheries Report No 26 - Report On Lake Chandala With Recommendations Of Its Importance As A Fauna Reserve, Alan Tingay, Susan R. Tingay
Fisheries Research Reports
The hydrology, vegetation, fauna and land use of Lake Chandala (31°30 'S, 115°57'E) is described on the basis of field and literature surveys. The significance of the Lake as a Straw-necked Ibis (Thresktornts spinicollis) nesting rookery is emphasised and recommendations are made for its acquisition and future management.
Fisheries Report No 23 - The Management Of Nature Reserves In Western Australia, Andrew A. Burbidge, Trevor Evans
Fisheries Report No 23 - The Management Of Nature Reserves In Western Australia, Andrew A. Burbidge, Trevor Evans
Fisheries Research Reports
The number and area of Nature Reserves in Western Australia has grown rapidly in recent times. At 80 June 1975 there were 491 reserves with an area of 5 103 037 hectares. By 31 December 1975, with the inclusion of reserves for the Conservation of Flora in the definition of a Nature Reserve, there were 900 reserves totalling 5 317 965 ha. With the implementation of the Environmental Protection Authority's recommendations based on the Conservation Through Reserves Committee's Report on Systems 4, 8, 9, 10, 11 and 12 the Nature Reserve System will jump to 985 reserves with an area …
Fisheries Report No 22 - The Western Rock Lobster Fishery 1971 - 1972, G. R. Morgan, E H. Barker
Fisheries Report No 22 - The Western Rock Lobster Fishery 1971 - 1972, G. R. Morgan, E H. Barker
Fisheries Research Reports
The fishery for the western rock lobster* is one of the most important single fisheries in Australia and an important export earner for the State. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and which are designed to limit the total effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to ensure that the effort is remaining within the accepted limits and that the regulations are adequately performing their function of maintaining reasonably stable catches. Inherent …
Report No 21 - A Resource Survey Of Woody Island, Archipelago Of The Recherche, J. Goodsell, A. Tingay, S. R. Tingay
Report No 21 - A Resource Survey Of Woody Island, Archipelago Of The Recherche, J. Goodsell, A. Tingay, S. R. Tingay
Fisheries Research Reports
A resource survey of Woody Island was undertaken by the three authors from 26 October, 1975 to 8 November, 1975.
The island has some unusual faunal and floral features not yet recorded for the Archipelago. These are discussed.
Some problems in relation to the island's management are identified.
Fisheries Report No 25 - The Western Australian Amateur Fishery For Australian Herring (Arripis Georgianus) - Results Of The 1973 Creel Census, R C.J. Lenanton, N. G. Hall
Fisheries Report No 25 - The Western Australian Amateur Fishery For Australian Herring (Arripis Georgianus) - Results Of The 1973 Creel Census, R C.J. Lenanton, N. G. Hall
Fisheries Research Reports
Historically, the Western Australian production of Australian herring (Arrtpts georgtanus) has fluctuated from year to year in response to changing market demand. Prior to 1968, the annual catch taken by professional fishermen was relatively stable, ranging from 200 000 kg (approx. 500 000 pounds) to 450 000 kg (approx. 1 000 000 pounds). From 1968, commercial production has risen to a peak of 1 187 440 kg (2 617 857 pounds) recorded in 1972/73 (Table I). An increase in demand for herring as bait for the rock lobster fishery is considered to be the major factor involved in this observed …
1976 South West Sub Clover Root Rot - White Rust On Rapeseed, M J. Barbetti
1976 South West Sub Clover Root Rot - White Rust On Rapeseed, M J. Barbetti
Experimental Summaries - Plant Research
1. South west sub clover root rot - 1975 cultivation experiments - To investigate the effect of time of cultivation, and nitrogen application, upon the incidence and severity of both tap and lateral root rot of subterranean clover. Localities - Karridale (76BU1), Manjimup (75MA1), and Walpole (75DE1). 2. South West sub clover root rot - 1976 cultivation experiments - Localities - Karridale (75BU11), Walpole (75DE12), and Narrikup (75AL36). 3. White rust on rapeseed - Aims - To examine the role of white rust seed infection in disease aetiology and epidemiology, both in an area containing white rust infected trash and …
1976 Early Crossbreds, C. M. Francis
1976 Early Crossbreds, C. M. Francis
Experimental Summaries - Plant Research
TABLE 3: Dry Matter Production Denmark 1976 Variety - kgs/ha* 210.10.26.1 (Bacchus x Daliak) - 5498 Mt. Barker - 5362 MBD 21.1 (Midland Bx Daliak) - 5166 Woogenellup - 5142 MBD 25.2 (Midland B x Daliak) - 4916 MBD 30.1 (Midland B x Daliak) - 4896 Daliak - 4654 Seaton Park - 4008 * Total of 5 cuts LSD 5% = 420 kg. Days to first flower 1976* Variety - Mt Barker. Woogenellup. 210.10.26.1. MBD 21.2. MBD 30.1. Dinninup. MBD 25.2. Seaton Park. Daliak. * Planting dates Denmark 25/3/76 Perth 3/5/76 A) 1967 Series Crossbreds. 1976 was a drought season …
1976 Inoculation - Clover Scorch Screening - Glasshouse - Nodulation Of Pastures, D L. Chatel
1976 Inoculation - Clover Scorch Screening - Glasshouse - Nodulation Of Pastures, D L. Chatel
Experimental Summaries - Plant Research
1. Inoculation. 1.1 Lupin inoculation. 1.2 Pea inoculation. 1.3 Clover inoculation. 2 Clover scorch screening. 3. Appendix 3.1 Glasshouse effectiveness. 3.2 Nodulation of Pastures - Denmark Research Station. LIST OF EXPERIMENTS 1. The effect of superphosphate on the nodulation of Unicrop lupins drilled with the fertilizer - Wandering. 2. The effect of superphosphate on the nodulation of Unicrop lupins drilled with the fertilizer - Lancelin. 3. The effect of manganese superphosphate on the nodulation of/ Unicrop lupins drilled with the fertilizer - Lancelin. 4. The effect of superphosphate on the nodulation of Unicrop lupins drilled with the fertilizer - Wongan …
Sealing Farm Dams, I A F Laing, R. G. Pepper
Sealing Farm Dams, I A F Laing, R. G. Pepper
Journal of the Department of Agriculture, Western Australia, Series 4
Research over the past 10 years has shown that it is technically possible to seal many leaking farm dams. In some situations a cheap chemical treatment is effective but in most cases it is cheaper to construct a replacement dam.
This article reviews the situation in western Australia and outlines some of the methods used for sealing dams.
Efficiency Of Sprinkler Irrigation Systems, T C. Calder
Efficiency Of Sprinkler Irrigation Systems, T C. Calder
Journal of the Department of Agriculture, Western Australia, Series 4
Shallow-rooted vegetable crops growing on sandy soils in hot, often windy summer weather, pose a difficult watering problem for most Western Australian vegetable growers.
Irregularities in wetting patterns are common. Wind effects are seldom taken into account in system design. The increasing popularity of knocker-type sprinklers makes these considerations particularily important.
1976 Trace Element Nutrition, J W. Gartrell
1976 Trace Element Nutrition, J W. Gartrell
Experimental Summaries - Plant Research
Contents: 1.0 Copper l,l Long Term Copper Trial, Newdegate 66Nl4 1.2 Residual copper (i) on wheat, Esperance Downs. (ii) on lucerne, Esperance Downs. (iii) on sheep and pasture, Bramley. 1.3 Copper for wheat on new land (i) sources, methods, granularity, Lake Grace. (ii) drilled vs topdressed, Newdegate. 1.4 Tissue tests for copper status of wheat. 1.5 Use of soil test for copper. 2.0. Manganese. 2.1 Residual manganese for sweet narrow leafed lupins - Badgingarra.
Summary Of 1976 Field Trials, D J. Gilbey
Summary Of 1976 Field Trials, D J. Gilbey
Experimental Summaries - Plant Research
Doublegee seed longevity. Doublegee control. Crop yield loss - doublegee. Creeping knotweed. Guildford grass. Time of spraying 2, 4-D. Longevity of doublegee seed under continuous pasture. Locality: Avondale, Wongan Hills and Chapman Research Stations. Effect of double cropping, shallow dry cultivation and spraying pasture on viable doublegee seed - 74A4. Locality: Avondale Research Station. Effect of doublegee cropping, shallow dry cultivation and spraying pasture on viable doublegee seed - 74WH4. Locality: Wongan Hills Research Station. Doublegee seed longevity x cultivation - 75WH65. Locality: Wongan Hills Research Station. Doublegee seed longevity x cultivation - 74C7. Locality: Chapman Research Station. Doublegee seed …
1976 Potash Trials, W. J. Cox
1976 Potash Trials, W. J. Cox
Experimental Summaries - Plant Research
76M01 - Comparative potassium requirements of L. Cosentinii and L. Angustifolius. 76M02 - Rates and times of Potassium application on Lupins. 76M03 - Sources of Potassium - Muriate vs Langbeinite. 76TSI - Comparative Potassium requirements of L. Cosentinii and L. Angustifolius. 76TS2 - Rates and times of Potassium application on Lupins. 76TS3 - Sources of Potassium on Lupins - Muriate vs Langbeinite. 76TS9 - Rates of P hand K on wheat. 76BA5 - Method of kcl application on Lupins. 76BA6 - Method of kcl application on Lupins.
1976 Long Term Rotation Trials, Ian Rowland
1976 Long Term Rotation Trials, Ian Rowland
Experimental Summaries - Plant Research
Long term rotation trials - W56H, 66M29, 67C13, 67N4, 68E5, 68SG5, 69GE20, 73SG16, Soil fertility - grain lupins - 75TS23.
1976 - Strategic Fungicide Trials - Botrytis Seed Vetches - Benlate Kabatiella Subclover, A Bokor
1976 - Strategic Fungicide Trials - Botrytis Seed Vetches - Benlate Kabatiella Subclover, A Bokor
Experimental Summaries - Plant Research
February 1977. 1. Strategic fungicide trial - 76AL34 - Obtain information on the effect of various timed spray applications of Benlate over the growing season on the development of clover scorch. 2. Strategic fungicide trial - 76BU6 - To assess the effect of fungicide treatments at periodic intervals over the season on the development of clover scorch disease 3. Comparative fungicide trial - 76AL33 - To compare the effectiveness of four fungicides at two rates for the control of clover scorch disease with or without addition of spraying oil. 4. Effect of Botrytis on seed yield of vetches - 76AL42. …
Comparison Of Economic Returns From Grain Crops, H M. Fisher
Comparison Of Economic Returns From Grain Crops, H M. Fisher
Journal of the Department of Agriculture, Western Australia, Series 4
While wheat is still generally the most profitable crop in Western Australia the relative profitability of barley and linseed has risen in the last few years; in southern areas they are likely to be at least as profitable as wheat.
Oats has fallen in profitability relative to wheat, and grain legumes have suffered a marked fall. Yields of these grains have increased with the introduction of new varieties but their price increases have not kept pace with those of wheat and barley. The present relationship of yields and costs indicates that substantial price changes will be needed to change the …
1976 Sunflower-Safflower Irrigated Variety Trial 1976-1977, G J. Parlevliet
1976 Sunflower-Safflower Irrigated Variety Trial 1976-1977, G J. Parlevliet
Experimental Summaries - Plant Research
In 1975/76 two varieties of sunflower, Hysun 10 and Hysun 20, as well as Safflower (Gila) were grown in a large alternative crop demonstration. Results were sufficiently good to warrant more and closer examination. This led to the present variety trial using varieties suggested by Mr. M. Poole. The aim was to evaluate six sunflower varieties and one safflower. The work was carried out in the light of reduced profitability of peas, beans and some fruit crops. This results in a number of growers having irrigation water and equipment under-employed. Other farmers are after a crop which will give them …
1975 Minimum Tillage Investigations 1964-1973 Summary, J M. Allen
1975 Minimum Tillage Investigations 1964-1973 Summary, J M. Allen
Experimental Summaries - Plant Research
The following investigations into methods of establishing cereals have been carried out by G.A. Pearce in the period 1964 - 1973. Merredin Research Station 66M28, 69WH23, 69M16, 70LG3, 70M4, 70SG5, 71A12, 71N14, 71WH18, 72A6, 72ME5, 72N5, 72SG1, 72WH6, 73A16, 73C12, 73N13, 73SG9, 73WH14,
Preliminary Reports 1976, G C. Macnish
Preliminary Reports 1976, G C. Macnish
Experimental Summaries - Plant Research
Effect of nitrogen sources on take-all 1975 season experiment - 75SG17. Effect of nitrogen sources on take-all experiment 76ES36, 76JE26, 76LG25. Take-all cultivar interaction experiment - 76JE29, 76LG29. take-all, spray-fallow and time of sowing experiments - 76GE35, 76LG26, 76LG38 and 76SG11. Take-all cleaning crops experiments - 76A7, 76E6, 76M47, 76N5 and 76WH11. Take-all cleaning crops on farmer's property experiments - 76LG27. Covered smut of barley - control experiment - 76A5. Covered smut of barley - control experiment - 76WH12. Build-up of barley covered smut experiment - 76A6. Cereal seed dressing - barley experiment - 76E5. Control of barley loose smut …
Experimental Summary 1975/76, D J. Gillespie
Experimental Summary 1975/76, D J. Gillespie
Experimental Summaries - Plant Research
A. Pasture Deterioration. 1. Sub clover variety screening for root rot resistance - 2. Climatic influences. 3. Paddock monitoring investigations. B. Cultivar evaluation in high rainfall areas. 1. Midland B/Woogenellup 2. Midland B/Seaton Park/Yarloop/Larissa C. Lucerne trials.
1976 Growing Season Results Report, M L. Poole
1976 Growing Season Results Report, M L. Poole
Experimental Summaries - Plant Research
1. 76BU15 - Sunflower varieties x rates of seeding x times of seeding on Busselton Sand at Ruabon. 2. 76BU4 - Miscellaneous species x rates of H.23408 Treeton. 3. 76AL6 - Rape varieties under severe blackleg conditions. 4. CB49 - Seed softening methods and effort of harrowing on emergence. 76MA9 - Miscellaneous Crop Trial. CB49 Trials 76BA27 - Effect of Harrowing on germination. Fluctuating temperatures. Fate of Other Trials: 76AL35, 76AL37), 76AL38), 76AL39), 76DE4, 76JE28.
1976 Nitrogenous Fertilisers For Cereals, M. G. Mason
1976 Nitrogenous Fertilisers For Cereals, M. G. Mason
Experimental Summaries - Plant Research
Results from 1976 Trials on Wheat. Rates of nitrogen on wheat - soil test. In this, the second year of this programme, 49 sites were selected and soil sampled during February-March. Forty six of these trials consisted of four replications and the other three had three replications and all reps were soil sampled separately. In each rep. of the 46 trials. 20 samples were taken to 10 cm depth with pogo stick samplers. In the.other three trials 30 samples per rep. were taken. In addition, from three holes at random across each trial, bulk samples were obtained from the 0-15, …