APPLE DISEASES
DUE TO THE EACK OF BORON SUPPLYING THE DEFICIENCY Recent experiments have demonstrated that internal cork of apples, and the crackling and die-back disease affecting pears, result from a deficiency of boron in the soil. Boron, in the form of borax or boracic acid, applied in small quantities to the soil, is taken up by the trees and completely checks these troubles. An application of from one-half to on,e pound of borax a tree is said to be sufficient for at least two years, though it is not yet known how long a single dressing will remain effective. When boron is applied through the medium of a sprayed solution, much smaller quantities have proved sufficient. The concentration recommended is a 1 per cent, solution and the sprays may be combined with lime sulphur or lead arsenate, and may be applied as late as early November in the case of trees which have not received a boron dressing during the previous two years. It is not known for how many seasons these dilute sprays remain effective, but tests are in progress to secure information on the point.
Permanent link to this item
https://paperspast.natlib.govt.nz/newspapers/THD19390114.2.62.3
Bibliographic details
Timaru Herald, Volume CXLVI, Issue 21244, 14 January 1939, Page 13
Word Count
188APPLE DISEASES Timaru Herald, Volume CXLVI, Issue 21244, 14 January 1939, Page 13
Using This Item
Stuff Ltd is the copyright owner for the Timaru Herald. You can reproduce in-copyright material from this newspaper for non-commercial use under a Creative Commons BY-NC-SA 3.0 New Zealand licence. This newspaper is not available for commercial use without the consent of Stuff Ltd. For advice on reproduction of out-of-copyright material from this newspaper, please refer to the Copyright guide.