Open Access. Powered by Scholars. Published by Universities.®
![Digital Commons Network](http://assets.bepress.com/20200205/img/dcn/DCsunburst.png)
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Publication Year
Articles 571 - 591 of 591
Full-Text Articles in Physical Sciences and Mathematics
Trial Results 1971, M L. Poole
Trial Results 1971, M L. Poole
Experimental Summaries - Plant Research
This report summarizes data for the following trials:
Trial 1. Rape varieties x time of seeding - Mt Barker R.S.
Trial 2. Rape varieties x time of seeding - Gibson
Trial 3. Rape varieties x time of seeding - Badgingarra R.S.
Trial 4. Rape harvesting trial-moisture content - Mt. Barker R.S.
Trial 5. Time of seeding x rates of seeding safflower
Trial 6. Time of seeding x rates of seeding sunflower
Trial 7. Depth control drill trial on rape.
Trial 8. Method of seeding trial on rape.
Trial 9. Sandblast trial - EDRS - Failed.
Trial 10. Rape varieties x …
List Of Experimental Programmes 1970 - 1971, Department Of Agriculture And Food, Western Australia
List Of Experimental Programmes 1970 - 1971, Department Of Agriculture And Food, Western Australia
Experimental Summaries - Plant Research
L.T. Jones, Vines and vegetables. J.E.L. Cripps, Fruit tree management. R.N. Glencross, Nutrition of pastures and cereals in higher rainfall areas. M.D. Carroll, Fertility changes mineral deficiencies. D.L. Chatel, Soil Microbiology. C.M. Francis, Agronomy and adaptation of lupins. A.E. Oakley, Radioisotopes studies. J.W. Gartrell, Trace element nutrition of cereals and pastures. M.G. Mason, Nitrogen nutrition of cereals. D.A. Nicholas, Evaluation of perennial and annual pasture cultivars in higher rainfall areas. M.L. Poole, Agronomy of crops in high rainfall areas, oilseed and other new crops. D. Tennant, Soil-plant water relations and root growth of cereals. G.H. Walton Evaluation of pasture cultivars …
Results Of Field Experiments 1970, M D. Carroll
Results Of Field Experiments 1970, M D. Carroll
Experimental Summaries - Plant Research
1. 70M17 The effects of Cultivation on Soil Nitrogen and Wheat Production 2. 69N11 and 69ES30 Soil Nitrogen Build-up under Various Legumes at Different Plant Densities 3. 7ON021 (R.N. Glencross) Rates of Copper and Zinc on Daliak Sub. Clover.
Soil Microbiology, D E. Chatel
Soil Microbiology, D E. Chatel
Experimental Summaries - Plant Research
SUBTERRANEAN CLOVER INOCULATION EXPERIMENTS Badgingarra and Newdegate Comparisons between Rhizobium trifolii strain WU290 and possible replacement strains were continued. The work was conducted for the following reasons 1. The need for information on "back-up" strains particularly since the inoculant manufacturers had experienced difficulty in producing high-count peat cultures of WU290. 2. Strain CC2480a had proved very satisfactory in the Eastern States. Although it did not show up to advantage under our conditions in 1968,further testing was indicated. 3. The need for information on inoculation needs on old land.
1970 Results Of Field Experiments, A C. Devitt
1970 Results Of Field Experiments, A C. Devitt
Experimental Summaries - Plant Research
Please find enclosed a summary of results obtained from a range of field trials. These include a study of some techniques to replace undesirable cultivars of subterranean clover; the competitive ability of some subterranean clovers; the evaluation of the sub clover cultivars, Dinninup 3, Midland B,some members of subspeciesYanninicum, the medic cultivars Cyfield and Tornafield; and the preliminary results from an exotic pasture species introduction trial at Shark Bay. In most cases complete results have been or will be circulated in report form.
Experimental Results 1970-71 - Phosphorus-Sulphur Maintenance Trials., R N. Glencross
Experimental Results 1970-71 - Phosphorus-Sulphur Maintenance Trials., R N. Glencross
Experimental Summaries - Plant Research
Medium Rainfall Zone Trials Eleven replications of the basic rate of P, rate of SO4-S and S experiments were maintained during 1970 in the 20in - 30 in. rainfall zone. Soil types examined were the very gravelly soils (5 reps, 4 sites), sands or loamy sands over gravel or clay (3 sites) and sandplain soils (3 reps, 2 sites). In all cases except one, fertiliser history was not reliable, but in every case well over one ton of super had been applied. over a period of over 15 years.
Anhydrous Ammonia, M G. Mason
Anhydrous Ammonia, M G. Mason
Experimental Summaries - Plant Research
Anhydrous ammonia, as the name infers, is pure ammonia, It is kept in a liquid form under pressure and must therefore be stored in special vessels. When pressure is released it changes to gaseous form. Anhydrous ammonia is the most concentrated form of nitrogen fertiliser available. It has 82% nitrogen compared to 46% for urea, the most concentrated solid form of nitrogen fertilisers.
Trials carried out were:
1965 - 1967 Wongan Hills Research station (3)
1967 - Badgingarra (1)
1968 - Moulyinning (1)
1968 - North Lake Grace (1)
1969 - Westonia (1)
Merredin (1)
Tammin. (1)
Soil And Plant Water Studies On Wheat Summary Of Results 1969/70, D Tennant
Soil And Plant Water Studies On Wheat Summary Of Results 1969/70, D Tennant
Experimental Summaries - Plant Research
Location
Trials were carried out within a radius of 5 miles of
Tammin on the properties of Messrs P. York and B. Nottage.
Sites represented deep sand, sandy loam, sand/clay and grey
clay soil types.
Time Of Application Of Solid Nitrogen Fertilisers., M G. Mason
Time Of Application Of Solid Nitrogen Fertilisers., M G. Mason
Experimental Summaries - Plant Research
The current recommendations for time of application of soild nitrogen fertilisers such as urea, ammonium nitrate and sulphate of ammonia are:
Zone A: These fertilisers should be applied as close to seeding as possible.
Zone B: As for zone A except on very sandy soils which are very prone to leaching, where application can be delayed 2-3 weeks.
Zone C: Applications should be delayed about 3 weeks after seeding.
The Fate Of Nitrogen In N-P Compound Fertiliser Urea And Ammonium Nitrate., M G. Mason
The Fate Of Nitrogen In N-P Compound Fertiliser Urea And Ammonium Nitrate., M G. Mason
Experimental Summaries - Plant Research
Trial: 69WH4
Aim of Trial : to follow the movement of nitrogen in the soil and to follow the chemical changes of the nitrogen applied as N-P compound 24 :24, urea and ammonium nitrate. Also to follow the pattern of uptake of this nitrogen by the plants. To compare the effects of these fertilisers on the yields of wheat and to relate differences to changes in the nitrogen fractions in the soil and to nitrogen and phosphorus in the plants.
Soil And Tissue Testing For Potassium., Department Of Agriculture And Food, Western Australia
Soil And Tissue Testing For Potassium., Department Of Agriculture And Food, Western Australia
Experimental Summaries - Plant Research
No meaningful conclusions can be drawn until the multiple regression analysis comparing soil and plant parameters with level of response has been completed. Similarly it is extremely dangerious to extrapolate results obtained from any one experiement in a particular district to the general farm situation. In addition these results represent only 1 rather atypical season and so need to be verified by additional calibration trials. in 1973 (40) and 1974 (20).
List Of Experiment Programmes 1969 -1970, Department Of Agriculture And Food, Western Australia
List Of Experiment Programmes 1969 -1970, Department Of Agriculture And Food, Western Australia
Experimental Summaries - Plant Research
T. Albertsen, maintenance phosphorus and sulphur, continuous cropping with NPS, sulphur status in high rainfall areas. J. Cripps, (jointly with B Luren), experiments at Stoneville research station and on growers’ properties. A.C. Devitt, replacement of legume pasture, evaluation of Midland b, competitive ability of some sub clovers. Evaluation of Dinninup 3. Evaluation of Tornafield medic 1967. Evaluation of some medics 1968. Evaluation of Northam A crossbreds. Effect of phosphate on growth of medics 1968. Effect of Urea on growth of subclover on new land. Effect of Urea on established legume pastures. Pasture species establishment and persistence. Evaluation of pasture species …
Fertility Build-Up In Wheatbelt Soils, M D. Carroll
Fertility Build-Up In Wheatbelt Soils, M D. Carroll
Experimental Summaries - Plant Research
Areas of loamy sand from Wongan Hills Research Station, which had carried subterranean clover for varying numbers of years, were sampled at five depth intervals to 60 cm. Wheat yield and a range of soil properties were related to numbers of years under subterranean clover. (W56H)
Wheatbelt Trace Element Nutrition 1969, J W. Gartrell
Wheatbelt Trace Element Nutrition 1969, J W. Gartrell
Experimental Summaries - Plant Research
1. Rates of Copper and Zinc on Wheat. 2. Rates and Sources of Zinc on Wheat: 3..Zinc Spray Treatments on Wheat.
Ammonium Nitrate Vs Urea, M G. Mason
Ammonium Nitrate Vs Urea, M G. Mason
Experimental Summaries - Plant Research
Ammonium nitrate is a source of nitrogen containing half
its nitrogen in the ammonium form and half in the nitrate form.
Some properties are set out in comparison with urea in the
following table.
Ammonium nitrate has an advantage over urea in that it can
be topdressed onto the surface of the soil and left uncovered
without a danger of loss of nitrogen to the atmosphere. When urea
is left uncovered on the surface of the soil losses of nitrogen occur
through volatilisation of ammonia during the hydrolysis of the urea.
Such losses with ammonium nitrate are only likely to …
1969 Results Of Field Experiments, Tony Albertsen
1969 Results Of Field Experiments, Tony Albertsen
Experimental Summaries - Plant Research
Determination of rates of P and S required for maintenance of optimum pasture growth on old land, using individually grazed plots.
Continuous Cropping Trials, M G. Mason
Continuous Cropping Trials, M G. Mason
Experimental Summaries - Plant Research
The aims of the trials at Binnu, Chapman, Wongan Hills, Avondale and Merredin were:
- To determine whether the application of nitgrogen and fertilisers can maintain yields under a "continuous cropping" system
- To compare the merits of three sources of nitrogen for this purpose.
- To determine the maintenance dressing of superphosphate under this system and the need for supplementary fertilisers.
Trial 61A2
There have been no great problems with this trial. for a number of years the plots have required chemical spraying to control wild oats which had built up. In 1968 and 1969 some plots were soil sampled to determine …
Phosphorus - Sulphur Trials. Higher Rainfall Areas, R N. Glencross
Phosphorus - Sulphur Trials. Higher Rainfall Areas, R N. Glencross
Experimental Summaries - Plant Research
Superphosphate, phosphate and sulphur maintenance, 68BR7.
Superphosphate rate, stocking rate, 62M69.
Progress report on maintenance P x S rate trials, 66NO7, 66NO11, 67BR8, 67BR9, 68B1, 69E9, 68AL3, 68AL4, 68BR5, 68BR6, 68BU1, 68BU2, 68HA1, 68NO37, 69NO5, 69AL2,69AL3,69AL14, 69BR9, 69HA8, 69NA6.
Clackline maintenance P x S trial, 66NO7, 67NO11.
Sources of sulphur, 67B6, 68B3, 68BU3, 68BU4.
Super residual lupins, 68BR29,
Nitrogen Use On First Crops After Legume Pasture, M G. Mason
Nitrogen Use On First Crops After Legume Pasture, M G. Mason
Experimental Summaries - Plant Research
Apart from the normal factors affecting response of cereals to nitrogen fertilizers, i.e. length of growing season, rainfall, soil type etc, there are other factors which affect the response after a legume pasture. these factors include length of the previous legume phase and how good was the stand of legumes. Unfortunately for most of the trials in the past, involving the use of nitrogen on first crops after legumes, this information is not available.
Nitrogenous Fertilisers For Cereal Grain Crops Results From 1969 Trials With Wheat, Oats, Barley And Linseed, M G. Mason
Nitrogenous Fertilisers For Cereal Grain Crops Results From 1969 Trials With Wheat, Oats, Barley And Linseed, M G. Mason
Experimental Summaries - Plant Research
69ME3, 66ES8, 66ES8, 69GE1, 69GE4, 69GE2, 61M11, 69M1, 69M2, 69ME7, 69TS3,69TS4, 69M3, 68SG4, 69ME2,69ME4, 68JL1, 68JL7, 68JL4, 68JL10, 68JL6, 68JL12, 69GE3, 69BA1, 69BA2, 69BA3, 69TS2, 69NO3, 69ES3, 69NA3, 67LG18, 69LG2, 69C1, 69C2, 67N3, 69N2, 69NO4, 68TS7, 61WH2, 62WH1, 69WH2, 69WH3, 69MO4, 69WH4, 69N1, 69NO2, 61A2, 69A1, 67ES1, 69ES4, 69BR1, 67ES2, 67ES2, 69E1, 69E2, 69AL1, 69MO2, 69MT1, 69MO3, 69NA2, 69NA4,
Granular Fertiliser, C R. Hale
Granular Fertiliser, C R. Hale
Experimental Summaries - Plant Research
There is general agreement that granulation of fertilisers improves their physical characteristics with respect to handling, storage and distribution in the field. These physical advantages rather tan any established agronomic reason appear to be responsible for the increasing use of granular fertiliser.