Superphosphate

Superphosphate has proved superior to bonedust or basic slag; sulphate of potash has not increased the yield, while nitrogenous fertilisers, such as dried blood or sulphate of ammonia, have proved either useless or harmful.

Wheat Growing in Australia Australia. Dept. of External Affairs

Superphosphate costs about $1.20 per cwt., and may be reckoned at 48 cents to 60 cents per acre.

Wheat Growing in Australia Australia. Dept. of External Affairs

Superphosphate, bone, and old plaster or mortar from destroyed buildings, are all valuable in preparing the soil for this crop.

The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition Sutton and Sons

Superphosphate, it may also be added, as first made from bones by Baron Liebig, was applied in a liquid form.

Manures and the principles of manuring Charles Morton Aikman

Superphosphate had a better effect when applied in April than when applied with the seed in June.

Manures and the principles of manuring Charles Morton Aikman

= Superphosphate = is an acid manure and best suited for use on soils containing lime.

The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition Sutton and Sons

Superphosphate sown along the drills with seed has saved spring-sown crops from destruction; and Vaporite, a proprietary article, has also been used with marked success.

The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition Sutton and Sons

Superphosphate of lime mixed with a small amount of nitrate of soda and forked into the ground is also a fine manure, but is more expensive than that made from lime and salt.

Gardening for the Million Alfred Pink

Superphosphate may also be employed as a top-dressing and worked into the surface around growing plants with the hoe.

The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition Sutton and Sons

Superphosphate is a much better manure than insoluble phosphates, and similarly, in the few cases where nitrogenous manures are beneficial, the speediest acting are best.

Manures and the principles of manuring Charles Morton Aikman