Soil Science Commons^™

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.

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

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)

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 …

Continuous Cropping Trials, M G. Mason

Experimental Summaries - Plant Research

The aims of the trials at Binnu, Chapman, Wongan Hills, Avondale and Merredin were:

1. To determine whether the application of nitgrogen and fertilisers can maintain yields under a "continuous cropping" system
2. To compare the merits of three sources of nitrogen for this purpose.
3. 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 …

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.

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 …

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,

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).

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)

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.

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.

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.

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.

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,

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.

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 …

Bulletin No 3547 - Kimberley Research Station - Progress Report 1968, Western Australian Department Of Agriculture

Bulletins - 3000 - 3999

Rivers flowing to the Gulf of Carpentaria and the Timor Sea have been estimated by hydrologists to carry about three times the water transported annually over the Murray drainage system and the South Eastern slopes which, together, comprise the highly settled agricultural areas of South Eastern Australia.

In 1945, the North Australian Development Committee recommended research in the Ord-Victoria rivers region as a first step toward ultimate agricultural development of this Northern potential and, in 1946, the Kim- berley Research Station commenced operations under the joint control of the Commonwealth Scientific and Industrial Research Organization and the Western Australian Department …

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.

Leaflet No 1003 - The Salt Problem In The Wheat Belt, G. H. Burvill

Bulletins 1 - 2999

IN the wheat belt of Western Australian bare patches in farm paddocks are often seen. Many are bare, or almost bare, because of too much salt in the soil. The excess of salt prevents the germination of seeds, or kills living plants, because it causes the water supply for germination or growth to be cut off. This salt problem is so serious in places that single farms or groups of farms have been ruined; wheat growing on them has become unprofitable.