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Articles 511 - 540 of 620
Full-Text Articles in Soil Science
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, …
1976 Field Crop Experiment, M. W. Perry
1976 Field Crop Experiment, M. W. Perry
Experimental Summaries - Plant Research
Performance of August sown cereals - 76MO50. To investigate the performance of late sown cereals for summer forage or grain in the eastern wheatbelt. This trial was designed to test the idea that even in a drought year, very late sowing of cereals might provide a low grain yield or at least a substantial quantity of summer feed.
1976 Report On Field Trials With Early-Maturing Subterranean Clover Crossbred Strains And Selections, D A. Nicholas
1976 Report On Field Trials With Early-Maturing Subterranean Clover Crossbred Strains And Selections, D A. Nicholas
Experimental Summaries - Plant Research
1. Drilled Trials in Wheatbelt Districts. Trial No. 76GE7, 76LG5, 76ME5, 76ME6, 76M011, 76M012, 76NA6, 76N01, 76TS10. A series of 9 trials to compare the crossbred subterranean clovers Nungarin, 239.2 and 584.1B. with Northam and Geraldton was sown in representative, dry wheatbelt localities in 1976. The trials were sown in randomised blocks with four replications on sites which carried little or no clover. Plot size was 4.22 metres by 40 metres. Superphosphate was applied at rates related to past applications and soil type, but was usually about 200 kg a hectare. Copper, zinc and molybdenum were applied where necessary. Seed …
1976 Alternative Grain Legume Species Evaluation, G H. Walton
1976 Alternative Grain Legume Species Evaluation, G H. Walton
Experimental Summaries - Plant Research
l. Alternative species to Lupinus -76PE6, 76M11. 2. Time of Flowering Response of Cicer Arietinum to temperature and daylength.
1976 Phosphorus And Sulphur Sources Trials, M D. Bolland
1976 Phosphorus And Sulphur Sources Trials, M D. Bolland
Experimental Summaries - Plant Research
PHOSPHORUS SOURCES TRIALS (A) Pasture trials i) High rainfall areas a) Sand: 76BU1 - New land P sources trial, T. O'Byrne, Yalingup. 76BU4 - Old land P sources trial, T. Coombes, Busselton. 76EX37 - Young land P sources trial, F. Fels, Esperance. b) Gravel: 76MT10 - New land P sources trial, Mt. Barker Research Station. 76MT9 - Old land P sources trial, Mt. Barker Research Station. ii) Medium rainfall areas: a) Sand 75N07A -New land P sources trial, D. Gillespie, East Chittering. b) Gravel: 75N07B - New land P sources trial, D. Gillespie, East Chittering. iii) Low rainfall areas a) …
1976 Phosphorus And Sulphur Group, J. W. Bowden, R J. Lunt, K F. Longbottom, W E. Hawkins
1976 Phosphorus And Sulphur Group, J. W. Bowden, R J. Lunt, K F. Longbottom, W E. Hawkins
Experimental Summaries - Plant Research
Stocking x Super. rate trials - 66M30, 62MB9, 68BR7. Crossed plot trials - residual value. P x K on Pasture - 74TS4, 74M06, 75GE6. N x P on· Wheat - 75M09. P x Species - 75LG4, 75JE5. Maintenance P x S trials - Wheat Belt Research Station - 65A1; C5, N5, 69WH15. High Rainfall Areas - 68B1, 69E6, 69AL2. Farmers residual value - 66N07, 66ME3,67N011, 66NA3, 66LG1, 68LG1, 66M06, 67M01, 67GE2, 67N05, 67N04, 66N09. Miscellaneous Cropping Trials - Super x Spacing - 76ME26, 76ES8, 9 and 10. Super Study rate and spacing - 76NA7, 76N05, 76JE8. Continuous cropping - 75LG26, …
1976 Summary Of Results - Sowing Systems - Fallow Re-Assessment, D Tennant
1976 Summary Of Results - Sowing Systems - Fallow Re-Assessment, D Tennant
Experimental Summaries - Plant Research
Sowing Systems - Effect on Mineralisation of Soil Nitrogen: Locations: T. Kettle, Kendenup - 76AL32 (Clipper barley), J.& R. Erickson, Bolgart - 76MOJ2 (Gamenya wheat), M. Brown, Yillminning - 76NA41-A (Gamenya wheat), R. Koch, Boddington - 76NA41-B (Gamenya wheat), Esperance Research Station - 76E33 (Gamenya wheat). Sowing systems. Herbicide application. Results: A. 76NA41-B, B. 76AL32, c. 76MO32, D. 76NA41-A, E. 76E33. Fallow Re-assessment - 72M29.
1976 Cereal Disease Survey - Mycosphaerella Graminum Spore Trap Studies - S. Nodorum Yield, A G. Brown
1976 Cereal Disease Survey - Mycosphaerella Graminum Spore Trap Studies - S. Nodorum Yield, A G. Brown
Experimental Summaries - Plant Research
1. A.G.P. Brown and T.N. Khan - Cereal disease survey. Samples were again collected from C.V.T.s by District Office staff and sent to South Perth for evaluation. A single sampling was made in 1976 at 120 days after sowing. No samples were received from Geraldton or Three Springs trials (presumably these failed to drought). Only one sample was received from Moora, none from Merredin and only one from Jerramungup. All samples from Narrogin were lost at South Perth. A number of samples were collected well after 120 days old and were senescent. 1. E. Moora. 2. Badgingarra R.S. 3. West …
1976 Experimental Summary, D. Gillespie
1976 Experimental Summary, D. Gillespie
Experimental Summaries - Plant Research
1. Cultivar Evaluation in High Rainfall Areas a) Midland B/Seaton Park/Yarloop/Larisa - 72MT29 b) Trikkala evaluation trial - 76MT3 2. Pasture deterioration - high rainfall areas. Variety Daliak. Dinninup. Woogenellup. Yarloop. Mt. Barker. Nangeela. Midland B. Toodyay C. Guildford D. Jarrahdale B. Trikkala. Larisa. a) Phytotron experiments. Dinn. x (Daliak x Tood. C) (av. of 6 crosses) Dinn. x (Mid. B x Nangeela) (av. of 3 crosses Daliak x (Mid. B x Nangeela) (av. of 4 crosses) b) Field experiments - 76MA8, 76DE3. 3. Lucerne productivity and persistence - 74E3-Sheep, 74E4-Cattle, 74E3-Sheep, 74E4-Cattle, 75AL30-Cattle. 4. Effects of saline irrigation water-on …
1976 Pasture Species Investigations - Wheatbelt, N. R. Mckeown
1976 Pasture Species Investigations - Wheatbelt, N. R. Mckeown
Experimental Summaries - Plant Research
Trials in Progress. Only four grazing trials were continued in 1976. The pasture species and management trial at Moora (68M023) required a disproportionate amount of available work time. About 6 man-months were spent in completing the fencing, repairing and modifying the water system and increasing the working efficiency of the experiment. Sheep were reintroduced to the trial early in June. This report summarizes the results from the trials under the following headings:- Seasonal Conditions; Grazing Trials;, Legume Grazing Management Trial, West Moora - 68M023; Comparison of Production from Cyprus Medic and Volunteer Pasture - 71LG17; Tornafield Medic, Serradella and Subterranean …
1975 Weed Control Investigations In High Rainfall Areas, J M. Allen
1975 Weed Control Investigations In High Rainfall Areas, J M. Allen
Experimental Summaries - Plant Research
1. Docks. 2. Capeweed. Dock control - Dicamba in pastures - 73AL38, 73AR9, 73BU9. Fiddle dock control glyphosate evaluation - 74AL26, 74BU14, 74BY7, 74DE13, 74HA7. Dock control - pasture renovation - 75AL6, 75BU2, 75HA2.
Ryegrass Control - Cultural And Chemical Systems, J. E. Holmes, G. A. Pearce
Ryegrass Control - Cultural And Chemical Systems, J. E. Holmes, G. A. Pearce
Experimental Summaries - Plant Research
RYEGRASS CONTROL - SPRAYTOP - SPRAY SEED + AUTUMN CULTIVATION 75M48 LOCALITY: Merredin Research Station. RYEGRASS CONTROL - SPRAYTOP - SPRAY SEED + AUTUMN- CULTIVATION 75WH67 LOCALITY: Wongan Hills RYEGRASS CONTROL - SPRAYTOP - SPRAYSEED + AUTUMN CULTIVATION 75N22 LOCALITY: Newdegate Research Station. RYEGRASS GERMINATION - EFFECT OF CULTIVATION 76Al0 LOCALITY: Avondale Research Station. RYEGRASS CONTROL - CULTURAL SYSTEMS 75A31 LOCALITY: Avondale Research Station. ANNUAL RYEGRASS CONTROL - CULTURAL SYSTEMS 75M49 LOCALITY: Merredin Research Station. RYEGRASS CONTROL - CULTURAL SYSTEMS 75E20 LOCALITY: Esperance Downs Research Station. RYEGRASS CONTROL - CULTURAL SYSTEMS 75SG16 lOCALITY: Salmon Gums Research Station. CONTROL OF RYEGBASS …
1974 Seed Yield Of Early Maturing Crossbreds Under Wheatbelt Conditions, C. M. Francis
1974 Seed Yield Of Early Maturing Crossbreds Under Wheatbelt Conditions, C. M. Francis
Experimental Summaries - Plant Research
Small plot trials sited at Merredin, Bencubbin and Bungil again demonstrated the 'bred' varieties to be at least the equal of Geraldton or Northam A under wheatbelt conditions. Growing season conditions at Bencubbin were the best for pasture in recent years. Merredin and Bungil also received above average rainfall but encountered dry conditions in September. Predictably the coarse siliceous nature of the Wodgil soil at Bungil in conjunction with the dry period produced very low seed yields. Crossbred 175.1.3 the leading crossbred at Merredin in 1973, was again significantly better than Geraldton or Northam A at Merredin and Bungil (Table …
Summary Of 1974 Dock Control Field Trials, J M. Allen
Summary Of 1974 Dock Control Field Trials, J M. Allen
Experimental Summaries - Plant Research
Dock control - Spray graze evaluations - 73BY8, 73HA4, 73BU5, 73MA6, 73DE6 Dicamba in pastures - 73AL38, 73BU9, 73AR9
Summary Of Trial Results - 1974, N R. Mckeown
Summary Of Trial Results - 1974, N R. Mckeown
Experimental Summaries - Plant Research
Observations and measurements were made on 10 grazing trials and 11 small-plot legume species trials in 1974. Three of the grazing trials were under crop, two of them concluding low oestrogen species trials which had been grazed since 1969, and one of them, 68M023, West Moora, as an interval between pasture phases. The small-plot trials dated from 1970 or later and on most of them half of each plot could be grazed by sheep and half was protected. These trials have continued to supply useful information on the suitabiliy of cultivars to soil and climate and will be the subject …
1975 Phosphorus And Sulphur Sources Trials, M D. Bolland
1975 Phosphorus And Sulphur Sources Trials, M D. Bolland
Experimental Summaries - Plant Research
1. Sulphur sources trials (a) Newdegate Gypsum Trials: Yarloop - 75YA3, Bridgetown - 75BR10, Busselton - 75BU6, Alexandria Bridge - 75BU7. (b) Gyplap - FeS04 Trial: McAlinden - 75BY4. 2. Phosphorus source trials: E. Chittering - 75NO7A E. Chittering - 75NO7B
1975 Fallow Re-Assessment And Soil Physical Data Accumulation, D Tennant
1975 Fallow Re-Assessment And Soil Physical Data Accumulation, D Tennant
Experimental Summaries - Plant Research
This report summarises progress and data available for the following investigations. 1. Fallow Re-assessment - 72M29. 2. Soil Physical Data Accumulation. (a) Evaluation of methods of bulk density measurement. (b) Water holding capacities and mechanical analyses of wheatbelt soils. (c) Water holding capacities of metropolitan sands. TABLE 3 Water holding capacities (1/10 - 15 Atmosphere water contents) of metropolitan sands (mm of water). Bulk density of 1.6 assumed. 1. Medina Research Station. 2. Morley White Sand. 3. Karrakatta Sand. 4. Bassendean Sand. 5. South Perth Lawn. 6. South Perth Scrub. 7. Underwood Avenue Research Station. 8. Floreat Park Sand. 9. …
1974 Field Experiments On Legume Seed Inoculation, D. L. Chatel
1974 Field Experiments On Legume Seed Inoculation, D. L. Chatel
Experimental Summaries - Plant Research
The response of sweet lupins to inoculation in Western Australia Before proceeding with details of the six lupin inoculation experiments conducted in 1974 the following comments are presented as a brief summary of the work so far done on lupin inoculation. Thirty nine inoculation experiments with sweet lupins (mainly Lupinus angustifolius var. Uniwhite, Uniharvest and Unicrop have been conducted in South-Western Australia since 1970. They have been drill-sown under farmer conditions and they have been aimed at finding where it is necessary to inoculate and the best method of inoculating seed. Of the 39 trials, 36 gave better nodulation following …
1975 Nitrogenous Fertilisers For Cereals - Trials With Wheat, Oats And Barley, M. G. Mason
1975 Nitrogenous Fertilisers For Cereals - Trials With Wheat, Oats And Barley, M. G. Mason
Experimental Summaries - Plant Research
Rates of nitrogen on wheat - soil test - Fifty-one sites were selected and soil sampled during February- March. All these proposed trials consisted of four replications and these reps were soil sampled separately. In each rep. 20 samples were taken to 10cm depth with pogo stick samplers. In addition, from three holes at random across each trial bulk samples were obtained from the 0-15, 15-30 and 30-45 cm soil intervals These soil samples were air dried (if not already dry) and sieved to remove > 2 mm fraction (gravel). Portions of these < 2mm fractions from the 0-10cm samples were sent to the Government Chemical Laboratories and to C.S.B.P. & Farmers Ltd. At C.S.B.P. analyses were carried out to determine P and K content and the C.S.B.P. soil nitrogen test was also carried out on them. This measures nitrate content before and after incubation with moist soil at 32c for seven days. A measurement was also made after 14 days. At Government Chemical Laboratories analyses were to be carried for Organic carbon and for a number of nitrogen fractions, including Total Nitrogen, MH4 + NO3 Nitrogen and several incubation techniques. These were also to be determined on the profile samples, which were also to be subject to the following analyses: a) Mechanical Analysis b) pH (in water) c) Cation Exchange Capacity d) Moisture Holding Capacity All of these trials were planted except for one at Jerramungup, where the marker pegs were ploughed out by the farmer. Vegetative cuts were then taken during the August - September period on 46 of the remaining 50 sites. Three of the other four sites were abandoned because of severe waterlogging (Neridup), extreme weediness (Nugadong) or due to poor plant survival (possibly due to webworm) combined with weeds (Mallalying). The trial at Wannamal was sown to oats, by the farmer. The nitrogen treatments were still applied and the trial was retained but not sampled for dry matter production. These samples were to be analysed for nitrogen content. Dry matter production and grain yields are set out in the following tables. 61M11, 75A1. 75A2, 75A3, 75AL1, 75AL2, 75BA2, 75BA3, 75BR1, 75BR2, 75C1, 75C2, 75C3, 75E2, 75E3, 75ES1, 75ES2, 75ES4, 75GE1, 75GE2, 75GE3, 75JE1, 5JE2, 75KA1, 75KA2, 75LG1, 75LG2, 75LG3, 75M2, 75M3,75M4, 75ME1, 75ME2, 75ME3, 75MO1, 75MO2, 75MO4, 75MT2, 75MT3, 75N1, 75N2, 75N3, 75NA1, 75NA3. 75NA4, 75NO2, 75NO3, 75SG1, 75SG2, 75TS2, 75TS3, 75TS4, 75WH4, 75WH5, 75WH6, 75WH7.
Summary Of 1975 Field Experiments With Advisers: "Rape Blackleg Disease Fungicide Trials", M J. Barbetti
Summary Of 1975 Field Experiments With Advisers: "Rape Blackleg Disease Fungicide Trials", M J. Barbetti
Experimental Summaries - Plant Research
During 1973 and 1974 a large range of fungicide spray and seed treatment schedules were tested. The 1973 results were, on the whole, not very encouraging, but the very early post-germination spray, two weeks after germination, did indicate a possible means of control. In view of the 1973 results, in the 1974 trials fungicidal sprays were applied early, and a new method of application of fungicide to the seed, known as "prilling" was used. Using fungicide seed prills and seedless fungicide prills the idea was to have the fungicide mixed with materials which dispersed upon wetting, so releasing and making …
Summary Of Trial Results - 1975, N. R. Mckeown
Summary Of Trial Results - 1975, N. R. Mckeown
Experimental Summaries - Plant Research
1. From September 1971 to late August 1974 there was a mean reduction of legume content in the medic pastures from 40 per cent to 22.0 per cent but the reduction at 7.4 sh/ha was to 31 per cent. The drop in woolly clover content on the volunteer pastures was closely similar. 2. In 1972, at 7.4 sheep/ha a difference in body weight of 7-9 kg rapidly developed in favour of sheep grazing barrel medic compared with sheep on volunteer pasture. This difference was maintained consistently throughout the trial. At lower stocking rates the differences were smaller and less consistent. …
Evaluation Of The Systemic Nematicide Phenamiphos To Control The Nematode Anguina Sp In Toxic Ryegrass Pasture, B A. Stynes
Evaluation Of The Systemic Nematicide Phenamiphos To Control The Nematode Anguina Sp In Toxic Ryegrass Pasture, B A. Stynes
Experimental Summaries - Plant Research
Field trials done in 1974 showed that phenamiphos could be used to control Anguina sp. and suggested that low rates may be effective with critical timing of applications. These possibilities were investigated in 1975. Locality - Katanning - F. Quartermaine and c. Butterworth. Gnowangerup - J. Griffith. Tables 1 and 2 show the absolute levels of nematodes in ryegrass seed and the density of nematodes per unit area of pasture after treatment with phenamiphos. All rates of nematicide reduced the level and density of nematodes; the highest rate being slightly more effective. The spray schedule including sprays in July and …
Summary Of 1974 Weed Control In Lupin Evaluations, J. G. Allen
Summary Of 1974 Weed Control In Lupin Evaluations, J. G. Allen
Experimental Summaries - Plant Research
Lupin Trials 1974 1. Herbicides x Depth of Seeding - There is no evidence of a herbicide x depth of seeding interaction in lupin plant numbers, at either Broomehill or Eradu. The lupin plants on the shallow sown plots were reported to be more effected by herbicides than on the deeper sown plots at Eradu. It is suggested that shallow seeding may be a factor in predisposing lupin crops to simazine damage particularly on sandy soils, however it has not been possible to demonstrate such on effect. 2. Herbicides x Time of Seeding - At two sites (Myrup, Namban) there …
1975 Evaluation Of New Subterranean Clover Cultivars, C. M. Francis
1975 Evaluation Of New Subterranean Clover Cultivars, C. M. Francis
Experimental Summaries - Plant Research
This year's trials have added little to the data already accumulated on the corssbreds 175,1 and 239.2 (Table 1). Higher seed yields at Merredin would have included some hard seed from the previous year. The lack of reliable data from the May sowings due to poor viability of some seed lines (including 175 and 239) grown at Medina was unfortunate. Data from Lake King is not yet available. Geraldton performed surprisingly well in the late sowings despite overall low seed yields. With late sowing its flowering date was within a few days of the crossbreds so that late sowing appears …
1975 Soil Fertility - Grain Lupins - Long Term Rotation Trials, Ian Rowland
1975 Soil Fertility - Grain Lupins - Long Term Rotation Trials, Ian Rowland
Experimental Summaries - Plant Research
Soil Fertility - Grain Lupins 75A4, 75BA6, 75E4, 75GE9, 75JE9, 75MT6, 75N028, 75WH9. Long Term. Rotation Trials W56H, 66M29, 67Cl3, 67N4, 68E5, 68SG5, 69GE20, 73SG16. Soil Fertility - Grain Lupins Use of the stage 4 lupin variety trials to assess the effect of a year of sweet grain lupins on a following cereal crop was continued. The 1974 variety trials contained a number of lupin varieties randomised with two standard wheat varieties. Also at two times of planting. Eight trials were selected: 74GE26 at Morawa, 74BA7 at Badgingarra, 74WH8 at Wongan Hills, 74N08 at Bolgart, 74A8 at Beverley, 74MT8 at …
1975 Part 2 - Rate, Time And Frequency Of Nitrogen Application On Kikuyu, W. J. Cox
1975 Part 2 - Rate, Time And Frequency Of Nitrogen Application On Kikuyu, W. J. Cox
Experimental Summaries - Plant Research
J. Burton,, Hazelvale 74DE7. I. Dry Matter Production kg/ha/day tables - (No Spring '74 N) (Spring N 1974) Soil Properties March 10, 1975. Total N concentration % - Tables
1975 Trials On Doublegee, D J. Gilbey
1975 Trials On Doublegee, D J. Gilbey
Experimental Summaries - Plant Research
75A16, 75A17, 75C13, 75MO36, 75MO37, 75WH21, 75WH22. Biological control of doublegee.
1975 Clover Scorch, D. L. Chatel
1975 Clover Scorch, D. L. Chatel
Experimental Summaries - Plant Research
(Feb 1976) This report covers the three major clover scorch activities for the year: A) The tolerance screening at Denmark. B) The dry matter production in the second year of a mowing trial, in which clovers with and without scorch were compared the previous year. C) A summary of the first four years of a disease incidence survey - and an examination of some meteorological factors in relation to disease development. The first two were done jointly with Dr C.M. Francis. The following tentative hypotheses are advanced to explain the regional differences in the distribution of clover scorch: a) The …
1975 Lupin Diseases, P M. Wood
1975 Lupin Diseases, P M. Wood
Experimental Summaries - Plant Research
Sclerotinia stem rot, a fungal disease, is becoming increasingly important. This disease can attack the stem at any point from the stem base to the first laterals. Lodging can result if the canker is severe enough. Superficial cankers can disrupt sap flow resulting in poorly filled pods. The fungicide Benlate is used overseas to control Sclerotinia in bean plantings, Accordingly, a fungicide trial was planned to estimate yield losses resulting from Sclerotinia infection. A secondary aim was to examine any yield response which could be attributed to reported growth promoting properties of benomyl - 75MT33. Brown spot of lupins - …