. The Utah Farmer : Devoted to Agriculture in the Rocky Mountain Region. ENGINESandOOTFITS Novo Deep WellPumping Outfit. SATURDAY, DECEMBER 11, 1915. THE UTAH FARMER (295) 7 growth, when oxygen is excludedfrom seeds they will not in the soil is essential—1st so thatdecay can go on—2nd so that theplant roots can gather food for theplant—3rd to supply the nitrogen tothe bacteria in the soil. The amount of air in the soil isdetermined by the porosity of thesoil. A loose soil of good texture willhold more air than a compact size of the pores themselves willalso be greater. T
. The Utah Farmer : Devoted to Agriculture in the Rocky Mountain Region. ENGINESandOOTFITS Novo Deep WellPumping Outfit. SATURDAY, DECEMBER 11, 1915. THE UTAH FARMER (295) 7 growth, when oxygen is excludedfrom seeds they will not in the soil is essential—1st so thatdecay can go on—2nd so that theplant roots can gather food for theplant—3rd to supply the nitrogen tothe bacteria in the soil. The amount of air in the soil isdetermined by the porosity of thesoil. A loose soil of good texture willhold more air than a compact size of the pores themselves willalso be greater. The soil air contains much morecarbonic acid gas than does ordinaryair. The vegetable matter in the soilin decaping is broken down first intohumus and then into carbonic acidgas, water, and free nitrogen, nitratesand ammonia, so that these gassesare found in excess in the soil air. The movements of soil air are dueto (a) barametric changes, (b) surfacewinds, (c) diffusion, (d) temperaturechanges, (e) movements of water. Barametric changes—Any changeswhich occur in the pressure of theair above the soil is fol
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
