NEW CHEMICALS FOR WEEDS
Trial On Nassella
Several new chemicals which may be of value in killing nassella tussock are being used by the Department of Agriculture in a trial which' has been laid down at Waipara.
These are either derivatives of, or are closely related to dalapon. One is based on a different organic acid and is also a sodium salt of the acid but the others are esters of the acid. Esters are formed when the organic acid is combined with an alcohol.
While salts are usually very soluble in water esters ate usually not very soluble and are formulated as oil emulsions. At times the evaporation of water in the spray has been a problem in the aerial application of herbicides to nasella and there could be some advantage in using the oil emulsions.
However, it is expected the esters will be less selective ip the species they affect and the main purpose of the trial is to make a comparison with the herbicide at present used.
Permanent link to this item
https://paperspast.natlib.govt.nz/newspapers/CHP19611007.2.59
Bibliographic details
Press, Volume C, Issue 29638, 7 October 1961, Page 7
Word Count
170NEW CHEMICALS FOR WEEDS Press, Volume C, Issue 29638, 7 October 1961, Page 7
Using This Item
Stuff Ltd is the copyright owner for the Press. 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.
Acknowledgements
This newspaper was digitised in partnership with Christchurch City Libraries.