BONES—PHOSPHATES—GUANO.
I hate to check improvement or chill the glow of Faith; yet I do so keenly apprehend that many of our people, especially among the Southern cotton-growers, are squandering money on Commercial Fertilizers, that I am bound to utter my note of warning, even though it should pass wholly unheeded. Let me make my position as clear as I can.
I live in a section which has been cultivated for more than two centuries, while its proximity to a great city has tempted to crop it incessantly, exhaustively. Wheat while its original surface soil of six to twelve inches of vegetable mold (mainly composed of decayed forest-leaves) remained; then Corn and Oats; at length, Milk, Beef, and Apples—have exhausted the hill-sides and gentler slopes of Westchester County, except where they have been kept in heart by judicious culture and liberal fertilizing; and, even here, that subtle element, Phosphorus, which enters minutely but necessarily into the composition of every animal and nearly every vegetable structure has been gradually drawn away in Grain, in Milk, in Bones, and not restored to the soil by the application of ordinary manures. I am convinced that a field may be so manured as to give three tuns of Hay per acre, yet so destitute of Phosphorus that a sound, healthy animal cannot be grown therefrom. For two centuries, the tillers of Westchester County knew nothing of Chemistry or Phosphorus, and allowed the unvalued bones of their animals to be exported to fatten British meadows, without an effort to retain them. Hence, it has become absolutely essential that we buy and apply Phosphates, even though the price be high; for our land can no longer do without them. Wherever a steer or heifer can occasionally be caught gnawing or mumbling over an old bone, there Phosphates are indispensable, no matter at what cost. Better pay $100 per tun for a dressing of one hundred pounds of Bone per acre than try to do without.
But no lands recently brought into cultivation—no lands where the bones of the animals fed thereon have been allowed, for unnumbered years past, to mingle with the soil—can be equally hungry for Phosphates; and I doubt that any cotton-field in the South will ever return an outlay of even $50 per tun for any Phosphatic fertilizer whatever. That any preparation of Bone, or whereof Bone is a principal element, will increase the succeeding crops, is undoubted; but that it will ever return its cost and a decent margin of profit, is yet to be demonstrated to my satisfaction.
No doubt, there are special cases in which the application even of Peruvian Guano at $90 per tun is advisable. A compost of Muck, Lime, &c., equally efficient, might be far cheaper; but months would be required to prepare and perfect it, and meantime the farmer would lose his crop, or fail to make one. If a tun of Guano, or of some expensive Phosphate, will give him six or eight acres of Clover where he would otherwise have little or none, and he needs that Clover to feed the team wherewith he is breaking up and fitting his farm to grow a good crop next year, he may wisely make the purchase and application, even though he may be able to compost for next year's use twice the value of fertilizers for the precise cost of this. But I am so thorough in my devotion to "home industry," that I hold him an unskillful farmer who cannot, nine times in ten, make, mainly from materials to be found on or near his farm, a pile of compost for $100 that will add more to the enduring fertility of his farm than anything he can bring from a distance at a cost of $150.
Understand that this is a general rule, and subject, like all general rules, to exceptions. Gypsum, I think every farmer should buy; Lime also, if his soil needs it; Phosphates in some shape, if past ignorance or folly has allowed that soil to be despoiled of them; Wood Ashes, if any one can be found so brainless as to sell them; Marl, of course, where it is found within ten miles; Guano very rarely, and mainly when something is needed to make a crop before coarser and colder fertilizers can be brought into a condition of fitness for use; but the general rule I insist on is this: A good farmer will, in the course of twenty or thirty years, make at least $10 worth of fertilizers for every dollar's worth he buys from any dealer, unless it be the sweepings or other excretions of some not distant city.
I have used Guano frequently, and, though it has generally made its mark, I never yet felt sure that it returned me a profit over its cost. Phosphates have done better, especially where applied to Corn in the hill, either at the time of planting or later; yet my strong impression is that Flour of Bone, applied broadcast and freely, especially when Wheat or Oats are sown on a field that is to be laid down to Grass, pays better and more surely than anything else I order from the City, Gypsum, and possibly Oyster-Shell Lime, excepted.
My experience can be no safe guide for others, since it is not proved that the anterior condition and needs of their soils are precisely like those of mine. I apprehend that Guano has not had a fair trial on my place—that carelessness in pulverizing or in application has caused it to "waste its sweetness on the desert air," or that a drouth following its application has prevented the due development of its virtues. And still my impression that Guano is the brandy of vegetation, supplying to plants stimulus rather than nutrition, is so clear and strong that it may not easily be effaced. It seems to me plainly absurd to send ten thousand miles for this stimulant, when this or any other great city annually poisons its own atmosphere and the adjacent waters with excretions which are of very similar character and value, and which Science and Capital might combine to utilize at less than half the cost of like elements in the form of Guano.
My object in this paper is to incite experiment and careful observation. No farmer should absolutely trust aught but his own senses. A Rhode Islander once assured me that he applied to four acres of thin, slaty gravel one hundred pounds per acre of Nitrate of Soda which cost him $4 per hundred, and obtained therefrom four additional tuns of good Hay, worth $15 per tun: Net profit (after allowing for the cost of making the Hay), say $30. He might not be so fortunate on a second trial, and there may not be another four acres of the earth's surface where Nitrate of Soda would do so well; but, should I ever have a fair opportunity, I mean to see what a little of that Nitrate will do for me. And I hope farmers may more and more be induced to conform in practice to the Apostolic precept, "Prove all things: Hold fast that which is good." No one's success or failure in a particular instance should be conclusive with others, because of the infinite diversity of antecedent and attendant circumstances; but if every thrifty farmer would give to each of the commercial fertilizers—Lime, Gypsum, Guano, Raw Bone, Phosphates, Ashes, Salt, Marl, etc.—such a careful trial as he might, observing closely and recording carefully the results, we should soon have a mass of facts and results, wherefrom deductions might be drawn of signal practical value to the present and to future generations.
I firmly believe that great results of signal beneficence are to be slowly but surely achieved by means of the household convenience known as the Earth-Closet, and by kindred devices for rendering inoffensive and utilizing the most powerful fertilizer produced on every farm and in every household. That is a vulgar squeamishness which leaves it to poison the atmosphere and offend the senses on the assumption that it is too noisome to be dealt with or utilized. A true refinement counsels that it be daily covered, and its odor absorbed or suppressed by earth, or muck, or ashes, and thus prepared for removal to and incorporation with the soil. It is far within the truth to estimate our National loss by the waste of this material at $1 per head, or $40,000,000 in all per annum: a waste which is steadily diminishing the productive capacity of our soil. This cannot, must not, be allowed to continue. We must devise or adopt some mode of securing and applying this powerful fertilizer; and I defer to that which is already in extensive and daily expanding use. Let whoever can do better; but meantime let us welcome and diffuse the Earth Closet.