FARMERS AND PHOSPHATES.
Plants demand phosphorus from the soil, animals demand it from plants, fertiliser manufacturers demand it from animals, whilo tho land demands it from fertilisers supplied by the farmer. For these reasons phosphates are tho most essential of all plant foods, and owing to tho continuous drain upoir the soil to provide tho necessary phosphorus, all soils in New Zealand require frequent doses of phosphates. Every 80001b. of milk produced by a cow contains an equivalent of 351b. of tricalcic phosphate. After allowing for tho phosphate necessary ,in the structure of the calf growing in her body, and the maintenance of her own body tissue, it must take tho equivalent of close upon half a cwt. of tho best phosphate to provide a cow with sufficient phosphorus for a year. Imagine, then, what a herd of 40 or 50 cows must take out of the soil in a season. To replace this is why farmers havo to uso phosphatic fertilisers.
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Bibliographic details
New Zealand Herald, Volume LXII, Issue 18994, 16 April 1925, Page 12
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162FARMERS AND PHOSPHATES. New Zealand Herald, Volume LXII, Issue 18994, 16 April 1925, Page 12
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