| OCR Text |
STOP FEEDING FLIES E Fertilizer Mixtures Increase. Vnluo of j : IJanijiird Maniiro While Ellin- 'r . iimtlng Mnggots. o That files may bo prevented from Sm breeding In barnyard manure by ndd-Efl ndd-Efl lng to tho substanco the common fer-H fer-H tlllzcr Ingredients, calcium cyanamtd, Km acid phosphato, and lcalnlt, has been JjJ demonstrated by recent oxporlmonts cm made by tho Bureaus of Entomology M and Chemistry of tho United State? II department of agriculture. Tho vaN tol uablo fcaturo of tho discovery Is that $ by tho now treatment tho fertilizing S3 valuo of tho manure Is increased at L ' tho same tlmo that Its monaco to yk health Is lessened. Under trcat-- trcat-- menla for preventing flies breeding 3j In mauro horotoforo In uso, tho ferial fer-ial tlllzlng valuo of tho substanco has VA been decreased or not affected. n Tho fertilizer Ingredient Indicated S by tho oxporlmonts to be most offec-j offec-j tlvo in provcntlng tho dovolopmont of (I fly maggots In manuro Is calcium cy-$ cy-$ anamld, a compound in which nltro-S nltro-S gen from tho air Is fixed by eloctrlcl-S eloctrlcl-S ty. Tho InvQHtlgatlons showed tho P, ' valuo, however, of adding other In-l In-l gredlonts to balance proporly tho jB chemical effects and to provont wasto W of fertilizing elements. Acid phos-II phos-II phato was found to bo tho supplo- mental Ingredient most nccdod, but A it still bettor fertilizer was obtained when lcalnlt was used also. Tho threo substances, cyanamtd, acid phosphate, and kalnit, glvo a fertilizer fertil-izer complete in itself, containing nitrogen, phosphorus, and potash, as woll as llmo. As a result of tho experiments, tho department's specialists advocata tho uso of mixtures ofVl pound of cyanamld and 2 to 4 pounds of ncld phosphate per 4 squaro feet of Bur-faco Bur-faco exposed, when tho manure Is in boxos or pits. When tho manuro is In open piles tho rato of application should bo 4 pounds of cyanamtd and 4 or more pounds of acid phosphate per 8 bushels of manure. To bo suro of retaining all tho ferttllzln ' oloments, more than 4pound3 of acid phosphate aro recommended. When kalnit 13 used It may roplaco a portion por-tion of phosphate When manure from pita treated as suggested abovo is applied as fertilizer, fertil-izer, tho rato should bo 9 tons por aero to provide tho amount of cyanamld cyan-amld calculated to bo most effective. Manuro treated in open pll.es should not bo applied In excess of 214 tons per ncre, slnco It contains a much higher percentage of tho coramorclal fertilizer than tho pit-treated prod- UCt Earlier experiments mado by tho department's specialists provo that both borax and hellebore aro effective effec-tive In provontlng flies from breeding breed-ing In manuro. Tho uso of borax I was found to constituto tho cheapest cheap-est effectivo treatment, costing one-half one-half cent per bushel of treated manure. man-ure. This treatment may lessen the valuo of tho manuro for agricultural purposes, howevor. Tho hellebore treatment was found to co3t about 1, cent por bushel of manure, and neither lessens nor Increases tho fertilizing fer-tilizing valuo. Tho treatment with fertilizer Ingredients just evolved cost from one-half cent per bushel of manuro when treatment Is In pits to 1.8 cents per bushel whon tho treatment Is 'in open piles. This cost Is based on tho normal selling prices of the fertilizer ingredients, and is materially lessened in effect by the 'increased fertilizing efficiency of the ( treated manuro. Not only Is tho value of tho manuro Increased by the fertilizer fer-tilizer ingredients added, but also their presence provonts tho wasto of certain Valuable elements usually lost from untreated manuro. In their most recent experiments In tho treatment of manure, tho department's de-partment's specialists tried numerous numer-ous other substances, Including (sulphur (sul-phur and various plant Infusions. From nono of theso, howover, wora tho results as satisfactory as thoso obtained with tho uso of borax, holle-bore, holle-bore, and tho fertilizer mixtures. Acting on tho data gathered from tho groups of oxporlmonts carried on slnco 1913, tho specialists recommend recom-mend tho uso of borax for preventing tho breeding of flies In manuro when tho latter is not to bo put to agricultural agricul-tural uso, and tho uso of olthor tho fertilizer mixtures already described or holleboro whon tho manuro Is to bo used agriculturally. |
