Beran, F. 1939 Die Wirkungsweise von Obstbaumkarbolineumemulsionen mit besonderer Berücksichtigung der Anwendungstemperatur. [The effectiveness of creosote emulsions on fruit trees with special consideration given to temperature.]. Nachrichtenblatt für den Deutschen Pflanzenschutzdienst. Berlin 19(4): 25-29.

Notes: Experiments are performed with middle and heavy oil insecticides against Epidiaspis leperii on current bushes. Results showed that the emulsions were increasingly effective at higher oil temperatures. The most effective technique was the use of 5% heavy fuel oil at a temperature of between 9°C and 11.5°C.