HAND-HELD SPECTROMETRY FOR ESTIMATING THRIPS (FULMEKIOLA SERRATA) INCIDENCE IN SUGARCANE

被引：6
作者：
Abdel-Rahman, Elfatih M. [1 ]
van den Berg, Maurits [2 ]
Way, Mike J. [2 ]
Ahmed, Fethi B. [1 ]
机构：
[1] Univ KwaZulu Natal, Howard Coll Campus, Sch Environm Sci, ZA-4041 Durban, South Africa
[2] South African Sugarcane Res Inst, Edgecombe, South Africa
来源：
2009 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-5 | 2009年
关键词：
sugarcane; thrips; Fulmekiola serrata; spectrometry; partial least squares (PLS) regression; NITROGEN;
D O I：
10.1109/IGARSS.2009.5417322
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The aim of this study was to investigate the potential use of leaf level spectrometric data to predict the incidence of sugarcane thrips Fulmekiola serrata (Kobus). A hand-held FieldSpec (R) 3 spectrordiometer (ASD) was employed to collect the spectral measurements The analysis was conducted using spindle leaves from 4-5 month old sugarcane crops of one variety (N19), sampled from commercial fields. A random forest algorithm followed by partial least squares regression were used for the analysis Models developed were deemed adequate to predict December nymph numbers and March adult numbers, but different models needed to be developed according to thrips life stage assessed and the season at which the estimation takes place
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页码：2648 / +
页数：2
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