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Quantifying the impact of foliar insects on two Eucalyptus hybrids in Zululand, northern KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Lindokuhle S Dlamini --- School of Natural Resource Management, South Africa Keith M Little --- School of Natural Resource Management, South Africa Benice Sivparsad --- Institute for Commercial Forestry Research, South Africa Ryan Nadel --- School of Forestry and Wildlife Sciences, USAThe effects of defoliation by insect pests on Eucalyptus growth in South Africa is poorly understood, with the need for negative impacts to be quantified. In 2010, two long-term insect exclusion trials were established at Palm Ridge and Teza plantations... -
Fungicides and an insecticide tested for the control of wattle rust and brown wattle mirid in Acacia mearnsii plantations
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Keith Little --- , South AfricaBlack wattle is planted on 110 000 ha in South Africa, and considered economically important for both private and commercial growers. Black wattle is intensively managed, with protection from abiotic and biotic risk factors forming an important component of any... -
Comparison of the acute toxicity and behavioural effects of two pyrethroids on African catfish Clarias gariepinus fingerlings
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EO Ogueji --- Alex Ekwueme Federal University, Nigeria JJ Ekpenyong --- Alex Ekwueme Federal University, Nigeria GU Amana --- Kogi State University, Nigeria EB Tabi --- Alex Ekwueme Federal University, Nigeria IB Okey --- Cross River University of Technology, Nigeria MO Olaolu --- Alex Ekwueme Federal University, Nigeria JN Nwakpa --- Ebonyi State University, NigeriaTwo of the most-commonly used pyrethroid insecticides were subjected to static bioassays to determine their acute toxicity to Clarias gariepinus fingerlings, followed by comparisons of their impact on mortality and behavioural changes in the fish. The LC50 values for deltamethrin...