Articles by Author: Nazir Ismail

Search results for Nazir Ismail

We found 26 results for you
  1. Estimation of thrips (<em>Fulmekiola serrata</em> Kobus) density in sugarcane using leaf-level hyperspectral data

    Estimation of thrips (<em>Fulmekiola serrata</em> Kobus) density in sugarcane using leaf-level hyperspectral data

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The aim of this study was to investigate the potential use of leaf-level hyperspectral data to predict the density of sugarcane thrips Fulmekiola serrata (Kobus). A hand-held spectroradiometer was used to make the spectral measurements on spindle leaves of 4-...
  2. Challenges and opportunities in the use of remote sensing for C<sub>3</sub> and C<sub>4</sub> grass species discrimination and mapping

    Challenges and opportunities in the use of remote sensing for C<sub>3</sub> and C<sub>4</sub> grass species discrimination and mapping

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Changes in the composition of plant functional type (PFT) activities are expected to accompany a changing climate. In tropical montane grasslands, such changes are predicted to follow shifts in the percentage cover and abundance of species following the C3 and...
  3. The effects of a deferred grazing system on rangeland vegetation in a north-western, semi-arid region of Tanzania

    The effects of a deferred grazing system on rangeland vegetation in a north-western, semi-arid region of Tanzania

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The present study assessed the effects of deferred grazing management on rangeland condition using aboveground biomass, vegetation cover and species composition as indicators of range condition. The experiment was based on traditionally conserved exclosures (ngitili). Data were collected in Shinyanga...
  4. Ukuphepha: A Multi-level Community Engagement Model for the Promotion of Safety, Peace and Health

    Ukuphepha: A Multi-level Community Engagement Model for the Promotion of Safety, Peace and Health

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This article aims to describe a theoretically-informed community engagement model which delivers a suite of child safety, peace and health interventions.We provide an overview of critical concepts that inform the community engagement approach that underpins the implementation of the Ukuphepha...
  5. South African Muslim Psychologists' Perceptions of Mental Illness

    South African Muslim Psychologists' Perceptions of Mental Illness

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study explored perceptions of mental illness in a sample of 10 female Muslim psychologists in a South African city to determine the influences of religion (and Islam specifically) on their understanding of the aetiology and treatment of mental illness...
  6. Investigating item and construct bias in an English verbal analogies scale

    Investigating item and construct bias in an English verbal analogies scale

    Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies
    For this study the researcher was interested in investigating the scalar equivalence of the adapted English version of the verbal analogies (VA) subscale of the Woodcock Muñoz Language Survey (WMLS) across English first-language speakers and Xhosa first-language speakers. This was...
  7. Variation in foliar water content and hyperspectral reflectance of <em>Pinus patula</em> trees infested by <em>Sirex noctilio</em>

    Variation in foliar water content and hyperspectral reflectance of <em>Pinus patula</em> trees infested by <em>Sirex noctilio</em>

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    The remote detection and quantification of symptoms associated with declining forest health is critical for the introduction of proper pest monitoring and control measures. Sirex noctilio, the Eurasian wood wasp, is one of the major pests responsible for declining forest...
  8. Discriminating the occurrence of pitch canker fungus in <em>Pinus radiata</em> trees using QuickBird imagery and artificial neural networks

    Discriminating the occurrence of pitch canker fungus in <em>Pinus radiata</em> trees using QuickBird imagery and artificial neural networks

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Pathogenic fungi, such as Fusarium circinatum, present a serious threat to Pinus radiata plantations. The effective management of infected trees is thus paramount. Coupled with advanced techniques, high spatial resolution remote sensing data provides the necessary tools to effectively identify...