Publication Date

1987

DAFWA Collections

Grains and field crops, Natural resources

Series Number

75

Abstract

The residual value of Christmas Island C-grade ore, 500 degrees C heated (calcined) C-grade ore (Calciphos), and superphosphate was measured in three experiments. Plant yield, and bicarbonate-soluble phosphorus extracted from the top 10 cm of soil were used to indicate the effectiveness of the four fertilizers. Using either of these indicators, superphosphate was the most effective fertilizer.

Number of Pages

20

Keywords

Rock phosphate, Superphosphates, Phosphorus fertilizers

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