IN these days of selected races, artificial fertilizers and other specialized conditions, plants are proving alarmingly susceptible to attack, and there has in consequence grown up a technique regarding their protection and a science to correspond where mycologist and entomologist, chemist and physicist, meet on equal ground. 'Plant doctors' abound and there are numerous remedies varying from the spraying with copper preparations, which make the vineyards of the Rhine look so unnatural, to the use of other and beneficial insects to control the malevolent. The late Prof. H. E. Armstrong pictured for us the golfer salting his way over the greens with copper arsenate followed bv the bodies of earthworms.

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Publication history

DOI

https://doi.org/10.1038/140384a0

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