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Updated: May 7, 2025
If you wish to experiment with some of the trees, give them an application of five pounds of superphosphate and two pounds of potash to each tree, properly distributed over the land which it occupies. You certainly should not use any form of nitrogen. Temperature and Moisture for the English Walnut. What amount of freezing and drouth can English walnuts stand?
But the other is what is called superphosphate of lime, which will dissolve in water; so that the roots of the plants can suck it up: and that is one of the richest of manures. Oh, I know: you put superphosphate on the grass last year. Yes. But not that kind; a better one still.
The superphosphate from the Copiolites is good; but the superphosphate from fresh bones is better still, and therefore dearer, because it has in it the fibrine of the bones, which is full of nitrogen, like gristle or meat; and all that has been washed out of the bone-earth bed ages and ages ago. But you must learn some chemistry to understand that.
Planters have learned the fact, which science and experience demonstrate, that a reliable compost must be now used for the remunerative culture of cotton, as well as of their corn and other staples; and their preference for the superphosphate prepared by this firm over most other fertilizers is evinced by the fact that their demand has for several years been largely in excess of the supply.
As an instance of the class of work for which gaseous jets, for driving turbines or similar forms of motor, may perform useful services the case of farm-made superphosphate of lime may be cited. By subjecting bones to the action of sulphuric acid the farmer may manufacture his own phosphatic manures for the enrichment of his land.
I use about 2 cwt. each of superphosphate, nitrate of soda and sulphate of potash per acre, but am dissatisfied with my yields as compared with yours in California. There is not only no standard for fertilizing orange trees, but there is no "ideal" which might be considered as a basis for a standard.
She had begun with a vague promise to give a look round now and then; but when the spring came she found herself doing Barker's work, keeping the farm accounts, ordering fertilizers, calculating so many hundredweights of superphosphate of lime, or sulphate of ammonia, or muriate of potash to the acre; riding about on Barker's horse, looking after the ploughing; plodding through the furrows of the hill slopes to see how the new drillers were working; going the round of the sheep-pens to keep count of the sick ewes and lambs; carrying the motherless lambs in her arms from the fold to the warm kitchen.
Now throw on six or eight inches of fine soil, in which mix well rotted manure, free from all straw, or rake in, thoroughly, superphosphate, or guano, at the rate of two thousand pounds to the acre, and plant the seed as in cold frame. Harden the plants as directed in preceding paragraph.
If the growers would make use of basic slag, superphosphate, or bone dust to replace the phosphate of lime removed by the crop, and of potash in one of its available forms, they would soon experience a great improvement in the power of their asparagus to resist disease and deterioration.
That root in its day of life had been fed well with superphosphate, and flourished exceedingly, till now its globe could hardly go into the pot. Down the low chimney there came the monotonous growl of the bitter winter wind, and a few spots of rain fell hissing on the embers. "Is this all thee has got?" he asked, turning to a woman who was busied with some more damp clothes in a basket.
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