Research into the termite problem in eucalyptus.
The results are presented of investigations in South Africa on the control (with insecticides and by plant resistance) of Macrotermes natalensis on Eucalyptus. The most effective insecticide was chlordane, but carbosulfan in controlled-release granules at 1.0 g a.i./tree was an effective replacement for chlordane. Controlled-release phorate was unreliable under dry conditions. There was no advantage in incorporating part of the dose in the planter flat, and neither different release rates nor different granule diameters made any difference to the effectiveness of controlled-release carbosulfan. In trials with about 30 species or clones, E. macarthurii was considerably more resistant than E. grandis, and various hybrids were intermediate; E. dunnii was even more resistant than E. macarthurii.