Using Spectroscopic Data Sets to Predict Numbers Of Thrips (Fulmekiola Serrata) In Sugarcane

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Date
2009
Authors
Abdel-Rahman,E.M
Journal Title
Journal ISSN
Volume Title
Publisher
2009
Abstract
Sugarcane thrips, Fulmekiola serrata (Kobus) (Thysanoptera: Thripidae), has recently been perceived as a constraint to southern African sugarcane production. Spectroscopic readings at leaf level in sugarcane variety N19 were recorded with the aim of predicting numbers of thrips (nymphs, adults and nymphs+adults) using partial least squares (PLS) regression. Correlations were high, viz. R2=0.75 for predicting nymphs numbers, 0.72 for adults and 0.75 for nymphs+adults. Predictions were reliable for nymphs since root mean square error (RMSE) of prediction was 1.25 (47%). Higher RMSE values were obtained for adults (4.8; 66%) and combined life stages (6.2; 63%).
Description
This Paper has been presented for Promotion at the University of Khartoum
Keywords
(sugarcane),(thrips, Fulmekiola serrata, spectroscopy, partial least squares regression
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