Artificial manures; their chemical selection and scientific application to agriculture . Fig. 1. LECT, 111. NORMAL MANUEE 29 leaves change their hue and become dark green, and it seemsas if the vegetation was about to assume its ordinary vigour;it is, hov^rever, only a deceitful appearance, for the cropremains as poor as ever. Up to the present time we have not exceeded the mostrudimentary returns; we will now try a fourth experiment,which is, in some sort, the synthesis of the three precedingones. We will add to the calcined sand both the mineral andnitrogenous matter. The result is almost ma
Artificial manures; their chemical selection and scientific application to agriculture . Fig. 1. LECT, 111. NORMAL MANUEE 29 leaves change their hue and become dark green, and it seemsas if the vegetation was about to assume its ordinary vigour;it is, hov^rever, only a deceitful appearance, for the cropremains as poor as ever. Up to the present time we have not exceeded the mostrudimentary returns; we will now try a fourth experiment,which is, in some sort, the synthesis of the three precedingones. We will add to the calcined sand both the mineral andnitrogenous matter. The result is almost magical, so greatly.
Size: 974px × 2565px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidar, booksubjectfertilizers
