A Farmer with a Stand of Eucalyptus Trees That Appear

Multiple Choice

A farmer with a stand of eucalyptus trees that appear to be suffering from rural dieback wants to arrest the problem. His best course of action would be to

A) spray the trees to poison the flying insects that defoliate the trees and monitor them carefully in case they return.
B) decrease stocking rates around trees, reduce fertiliser application and plant more trees and shrubs.
C) fertilise the soil with superphosphate to enable better growth.
D) increase stocking rates to reduce weeds and grasses that compete with the trees for soil moisture.
E) reduce the density of other, less-desirable native trees in the area to reduce the available feed for the defoliating insects.