Research note

Response of Eucalyptus to Aldicarb in Coastal Sandy Soils in Natal, South Africa

Published in: South African Forestry Journal
Volume 158, issue 1, 1991 , pages: 5–9
DOI: 10.1080/00382167.1991.9630367
Author(s): P.R. Atkinson, South Africa, E. van den Berg, South Africa, N.J. van Rensburg, South Africa

Abstract

The planting of Eucalyptus on aeolian; recent sands of the Natal coast has raised the question of whether nematicides are as necessary to counter patchy, unthrifty growth, as they are for sugarcane. The heights of eucalypts were mea sured at about one year old in two replicated trials, and one unreplicated trial, treated with several rates of the nematicide, aldicarb. There was no response to aldicarb consistent with any nematicidal effect. However, in one trial there were small, but significant, responses to two treatments at 1,3 g active ingredient per tree, and which was as cribed to a possible stimulating effect of aldicarb directly on tree growth. Nematode populations in samples of untreated soil from the trials were, on the whole, very small. In the replicated trials the insecticide, chlordane, at 0,60 g a.i./tree was applied as a treatment for white grub (scarabaeid beetle larvae) but tree mortality from this cause was so low that no conclusions could be drawn.

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