PROTECTION FROM APHIS.
Experiments among the Californian walnut groves have proved that nicotines sulphate, added at the rate of two per cent by weight to kaolin is the best remedy against aphis. Finding it so effective, tho Bureau of Entomology has tried it out in other crops. Some forms of aphis require more nicotine sulphate, tho melon aphis calling for about five per cent. Tho most satisfactory method of applying the powder is the bellows (luster. With such a tool a man can dust two acres of melons a day. Cabbage aphis quits at six per cent mixture. The dust has proved much superior to wet spray for aphis. It can also be mixed with dry poisons when chewing insects are present, but must not be mixed with Bordeaux mixture except tho latter bo in dry form. Kaolin, it may bo added, is ;i form of powdered clay of exceedingly line grain. It is largely used for making porcelain and other china ware.
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Auckland Star, Volume LXIII, Issue 125, 28 May 1932, Page 6 (Supplement)
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163PROTECTION FROM APHIS. Auckland Star, Volume LXIII, Issue 125, 28 May 1932, Page 6 (Supplement)
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