The American Farmer, (March, 1858)

p. 75-76
POULTRY HOUSES.—Have these cleansed. And as the manure is a most excellent fertilizer, the droppings of a single hen in a year being computed to contain all the elements of 20 bushels of wheat, if its manorial virtues are properly economised, it becomes a matter of interest to every wheat-grower to save all of it he can. It would, therefore be good policy to have the droppings in the hen-house scraped off weekly, put into a barrel slightly covered with a dusting of plaster or pulverized charcoal, and kept under cover in a dry place.
    Attention to such small matters, ensure big results. From 600 to 800 lbs., if properly managed, will be found a full dressing for an acre in wheat, while no better manure can be applied to fruit trees, or to any of the grain crops.

p. 300
GUANO AND CHARCOAL.The North British Agriculturist, of Dec. 30th, 1857, contains a report of certain manures upon green crops, by which it appears that a mixture of equal parts of charcoal manure and Peruvian guano, produced nearly as great an increase of crop as when a double quantity of the guano was used alone. In other words, 3 cwt. of Peruvian guano, and 3 cwt. of charcoal manure produced nearly as large a crop of turnips as 6 cwt. of the same guano used alone.

Remarking upon this result the Country Gentleman adds:—

"As pulverized charcoal or charcoal dust is much cheaper than Peruvian guano, the fact above noticed may suggest to those who employ guano and other expensive manures, especially if ammoniacal, a mode of using them which will be economical, if the results from such a mixture should be found to correspond with that reported. Charcoal manure is quoted, we see in British journals, at about $1 per cwt., while Peruvian guano costs at least $3 per cwt.
    "As the real manurial value of this mixture is undoubtedly to be attributed to the influence of the charcoal in fixing the ammonia of the guano, it seems highly probable that a similar admixture of charcoal would be beneficial in the case of any other ammoniacal manure."

p. 319
HAULING OUT MANURE.—In many of the States in which our journal circulates, this work has already been done. Nay, in many of them the corn has been planted; while in others it is already up. But still there is a very broad district of country, where the hauling out of manure has not been begun. To our friends, then, who have still this labor to perform, we desire to address ourselves.
     Now, every one who encounters the labor of accumulating manures, should make it a matter of duty, as it obviously is his interest, to preserve its most active fertilizing principles from waste—we mean those of a volatile nature. That some waste will occur, no matter how careful one may be, when the manure in the yards come to be broken up, to be hauled out, we readily admit; but yet, much that is usually lost, may be saved, by attention in the use of the means. If at the time of breaking up the manure, 1 bushel of plaster, 10 bushels of finely pulverised charcoal, or a dilute solution of sulphuric acid, or of copperas, were sprinkled over every twenty two-horse cart loads of the manure, much loss would be prevented.