. Bulletin of the Botanical Department, Botany, Economic; Jamaica; Periodicals.; Plants; Jamaica; Periodicals.; Agriculture; Jamaica; 181 and the loss of leachings. fig. 1. The system here described is illustrated in ft**; \3Sk •'. 1. The French method of keeping manure. It has been questioned whether the construction of expensive cisterns for collecting the manure leachings repays the cost, but it is obviously desirable from what has been said regarding the value of the liquid manure and the desirability of promoting regular and uniform fermen- tation of the manure
. Bulletin of the Botanical Department, Botany, Economic; Jamaica; Periodicals.; Plants; Jamaica; Periodicals.; Agriculture; Jamaica; 181 and the loss of leachings. fig. 1. The system here described is illustrated in ft**; \3Sk •'. 1. The French method of keeping manure. It has been questioned whether the construction of expensive cisterns for collecting the manure leachings repays the cost, but it is obviously desirable from what has been said regarding the value of the liquid manure and the desirability of promoting regular and uniform fermen- tation of the manure, that the leachings should be saved and added to the manure heap by some means. Stored separately, the liquid part rapidly deteriorates and the solid part, from lack of moisture, is liable to undergo " fire-fanging," or harmful fermentation. The nature and extent of fermentation in manure also depends to Bonie extent on the composition of the manure, more particularly upon the amount of nitrogen in a soluble form which it contains. The greater the amount of soluble nitrogen the more rapid the fermentation. Urine, as we have already seen, is rich in soluble nitrogenous compounds, and this explains why it decomposes so rapidly. By fermentation manure decreases rapidly in bulk. The substance of which it is composed are converted largely into water and gases, principally carbonic acid gas, and where fermentation is not properly controlled, nitrogen may escape either in the free gaseous state or aa ammonia. The coarse materials of the manure are gradually decom- posed and are dissolved to a considerable extent in the black liquid which oozes out of the manure heap. The mineral matter (the phos- phates, potash, etc.) is also rendered more soluble. When properly controlled, therefere, fermentation is a valuable means of increasing the availability of the fertilising constituents of manure, although it decreases the bulk ; but when not properly controlled it seriously redu
Size: 1990px × 1255px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectagriculture, booksubjectplants, booky
