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Titolo:
A sampling strategy to assess banana crops for damage by Radopholus similis and Pratylenchus goodeyi
Autore:
Stanton, JM; Pattison, AB; Kopittke, RA;
Indirizzi:
Queensland Dept Primary Ind, Indooroopilly, Qld 4068, Australia QueenslandDept Primary Ind Indooroopilly Qld Australia 4068 8, Australia Dept Primary Ind, Johnstone, Qld 4859, Australia Dept Primary Ind Johnstone Qld Australia 4859 nstone, Qld 4859, Australia
Titolo Testata:
AUSTRALIAN JOURNAL OF EXPERIMENTAL AGRICULTURE
fascicolo: 5, volume: 41, anno: 2001,
pagine: 675 - 679
SICI:
0816-1089(2001)41:5<675:ASSTAB>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Pattison, AB Queensland Dept Primary Ind, 80 Meiers Rd, Indooroopilly, Qld4068, Australia Queensland Dept Primary Ind 80 Meiers Rd Indooroopilly QldAustralia 4068
Citazione:
J.M. Stanton et al., "A sampling strategy to assess banana crops for damage by Radopholus similis and Pratylenchus goodeyi", AUST J EX A, 41(5), 2001, pp. 675-679

Abstract

The economic threshold of burrowing (Radopholus similis) and lesion nematode (Pratylenchus goodeyi) on banana may be used to determine whether it is economic to apply nematicide. However, to use such a threshold, a sampling strategy is essential to determine the severity of root damage caused by the nematode. Ten banana crops in south-eastern Queensland and northern New South Wales and 10 in northern Queensland were sampled several times over several years to determine the disease index (percentage cortical root damagecaused by R. similis and P. goodeyi) and nematode populations in roots. The negative binomial distribution and Taylor's power law analysis were used to determine the relationship between the mean and variance of the disease index and nematode populations. Taylor's power law gave the better fit, andwas therefore used to determine fixed-precision stop lines for sequential sampling for precision at 20-30% for disease index and 20-40% for nematode populations. Twenty samples per crop were sufficient to achieve 25% precision when assessing nematode infestations using disease index but only 40% precision when using nematode populations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 05:13:15