Phosphorus - sulphur trials. Higher rainfall areas

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

Copper minerals for fertilizer use

COPPER fertilizers have an important role in maintaining: and increasing Western Australia\u27s agricultural production. On many soils they are essential for cereal growing or pasture production and persistence and for animal health and wool quality. They are also sometimes used for fruit trees, vines, and vegetables

Experimental Results 1970-71 - Phosphorus-Sulphur Maintenance Trials.

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

Response to nitrogen fertilisers of wheat, oats, and barley in Western Australia

Trials were mainly sited in areas normally receiving more than 450 mm average annual rainfall. Response curves were fitted to each set of data and then averaged to give overall response curves for each crop. There was little difference between the crops in absolute or percentage response to nitrogen fertiliser but the nitrogen fertiliser rate required for maximum yield was highest for wheat and lowest for oats

Copper, zinc and molybdenum fertilizers for new land crops and pastures : 1969

Four years of intensive research into soil deficiencies in developing areas have resulted in a more comprehensive understanding of the need for trace elements in Western Australia

How important is sulphur for pastures?

With the introduction of low sulphur compound and concentrated fertilisers, a new look is required at the sulphur status of West Australian soils, and the sulphur requirement of pasture. In this article the functions of sulphur, deficiency symptoms and potential problem soils are described. Current recommendations and plans for future research work are outlined

Soil acidity and liming in the Lower Great Southern

In the 375 to 750 millimetre rainfall area of the Lower Great Southern, reports of loss of subterranean clover from established pastures, reduced carrying capacity for sheep and increasing soil acidity lead to the establishment in 1981 of a research programme into the effects of soil acidity on pasture productivity in that region

Rates of superphosphate for pasture and crop production in the Salmon Gums district

DURING the last few years large areas have been released for cereal and pasture production in the southern part of the Shire of Dundas and the northern part of the Shire of Esperance. Changes in land use since 1962 are summarised in Table 1

The Avondale stocking rate experiment

THERE is now ample evidence that stocking rates well above the usual district levels can be carried in the Avon Valley. However, many aspects of increasing stocking rates still require investigation, particularly with lambing ewes and young sheep

N-P compound fertilisers

FARMERS were able to buy the two compound fertilisers N-P Compound Fertiliser 28:14 and N-P Compound Fertilser 24:24 in the 1967 season