The Journal of the Department of Agriculture, Victoria . I. Orange branch showing ruptured bark. II. Confluent blisters on small twig. io July, 1912.] • ExaiitJiema of Orange Trees in Australia. 403. III. Oranges showing (a) splitting, (b) woodiness. IV. Transverse section of twig gum pockets at (c), normal tissue at (d). 404 Journal of Agriculture, \ktoria. [10 July, 1912. siliceous sandstone, this is broken down and is tlien washed from the higherlevels deposited on the lower slopes at the f(X>t of the hills. Fromthe nature of its source and depositioir ii: is, as would be ex
The Journal of the Department of Agriculture, Victoria . I. Orange branch showing ruptured bark. II. Confluent blisters on small twig. io July, 1912.] • ExaiitJiema of Orange Trees in Australia. 403. III. Oranges showing (a) splitting, (b) woodiness. IV. Transverse section of twig gum pockets at (c), normal tissue at (d). 404 Journal of Agriculture, \ktoria. [10 July, 1912. siliceous sandstone, this is broken down and is tlien washed from the higherlevels deposited on the lower slopes at the f(X>t of the hills. Fromthe nature of its source and depositioir ii: is, as would be expected, of alight porous nature. As this soil was being formed, more or less vegetablematter was brought down adid mixed through it, but this would be, com-paratively speaking, quickly removed, more especially if the surface soilbe kept free from plant growth. Several of the orange groxes are on this type of soil, some of these wereplanted many years ago, and as a consequence they have withdrawn a largequa^ntity of the available plant food within their reach. Even in the area of a single plantation the deficiencies of plant food inthe soil \ary to a considerable extent, affecting both the gro
Size: 1226px × 2037px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectagricul, bookyear1902
