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Home Publications Tree Planters' Notes Tree Planters' Notes Volume 23, Number 3 (1972) Pesticide Treatments on Saligna Eucalyptus, Australian Toon Seedlings Affect Dieback But Not Survival

Pesticide Treatments on Saligna Eucalyptus, Australian Toon Seedlings Affect Dieback But Not Survival

Treatment with differing rates o f Captan and Malathion did not significantly affect survival of Australian loon and Saligna eucalyptus seedlings in a Hawaiian nursery study. But dieback and related height growth were a different story.... Australian toon (Toona australis) and saligna eucalyptus (Eucalyptus saligna) are the main species grown at the Hawaii State Tree Nursery for reforestation. Before seedlings of these and other species are shipped throughout the State, they are dipped in a chemical solution to kill fungi and insect pests. The solution is made up of 2 pounds of Captan- 40W (a fungicide) and 1 quart of Malathion-57% (an insecticide) per 100 gallons of water: Broad experience with field planting these species bare-root in Hawaii indicates that survival rate is generally good for Australian toon, but poor for saligna eucalyptus. Both species suffer dieback after field planting.


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Author(s): Gerland A. Walters

Publication: Tree Planters' Notes - Volume 23, Number 3 (1972)

Volume: 23

Number: 3