Abstract
The author carried out experiments on relation between the suspensibility of mixture with pesticides and its spray in jury upon citrus plants. The results of these experiments are as follows;
1. Poor suspensibility was observed on the mixture of Delan (Dithianon) with Supracide (DMTP), Malathon (Malathion) and Azomite (PPPS, Azoxibenzene). These mixture caused remarkable spray in jury upon Satsuma fruit.
2. Poor suspensibility was shown on the mixture of Difolatan with Supracide, Azomite, Galecron (Chlorophenamidine), Malathon, and Kelthane. The mixture of Difolatan with every insecticide caused serious spray in jury upon Satsuma fruit.
3. As to the mixture of Dithane (Zineb) or M-Diphur (Maneb) with insecticide, only the mixture of Dithane with Malathon showed poor suspensibility. No spray in jury, however, were observed on the combinations with these two fungicides and various insecticides tested.
4. Mess cylinders (500ml) of special type (Fig. 1) were used for measuring the suspensibility of mixtures. Standing the mess cylinder containing mixture still for 10 minutes seems to be long enough for measuring the suspensibility of pesticide mixtures.
