. Cyanamid, manufacture, chemistry and uses, by Edward J. Pranke ... ly in this that thelime nitrogen must not be applied in excessive quantities andfurther must not be applied upon acid soils or soils which tendto become acid; that it must be distributed as uniformly aspossible upon the surface of the field, and must then be workedinto the ground, when it is not used as a top dresser, by deepacting tools, or be plowed under. To illustrate, it should be noted that in our experiments(see page 71) an application of 1 gram of nitrogen in the formof lime-nitrogen upon 7 kilograms of soil contained
. Cyanamid, manufacture, chemistry and uses, by Edward J. Pranke ... ly in this that thelime nitrogen must not be applied in excessive quantities andfurther must not be applied upon acid soils or soils which tendto become acid; that it must be distributed as uniformly aspossible upon the surface of the field, and must then be workedinto the ground, when it is not used as a top dresser, by deepacting tools, or be plowed under. To illustrate, it should be noted that in our experiments(see page 71) an application of 1 gram of nitrogen in the formof lime-nitrogen upon 7 kilograms of soil contained in avessel 20 cm. in diameter did not act harmfully, but actedfavorably from the beginning to the end upon the plant growtheven when the lime nitrogen was mixed with the soil im-mediately before planting of the seed. Upon a circumferenceof 20 cm. diameter, however, one does not apply in agriculturalpractice 1 gram, but only one-tenth or at the highest two-tenthsof a gram of nitrogen. It is therefore clear that one can CYANAMID—MANUFACTURE, CHEMISTRY AND USES 69. uoyoo -Ifdcfo fiyi/9U/M9^$) u/0^6 PI 9)1 /O CYANAMID—MANUFACTURE, CHEMISTRY AND USES regard the disadvantageous action of lime nitrogen, such ashappens under applications of exceptionally large quantities inpot experiments as either not occurring in agricultural practiceor as immediately disappearing. Practically, one cannot there-fore regard lime nitrogen as a plant poison. It is to beregarded as a fertilizer applicable in agricultural practice andhaving a favorable action, although as is necessary with barnmanure, green fertilizers, bone-meal, horn meal, etc., the nitro-gen contained in it must be converted by bacterial activity intoammonia and nitric acid in order that it may serve as plantfood. 2. If lime nitrogen is applied in normal quantities, as com-pared with other fertilizer materials, distributed as uniformlyas possible upon the soil, and worked in well with deep-actingtools, it exerts no harmful inf
Size: 1195px × 2090px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisheretcet, bookyear1913
