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Titolo:
Bioassay for enhanced biodegradation of nematicides in soil
Autore:
Pattison, AB; Stanton, JM; Cobon, JA;
Indirizzi:
Queensland Dept Primary Ind, Queensland Hort Inst, Ctr Wet Trop Agr, S Johnstone, Qld 4859, Australia Queensland Dept Primary Ind S Johnstone Qld Australia 4859 859, Australia Queensland Hort Inst, Queensland Dept Primary Ind, Indooroopilly, Qld 4068, Australia Queensland Hort Inst Indooroopilly Qld Australia 4068 Qld 4068, Australia
Titolo Testata:
AUSTRALASIAN PLANT PATHOLOGY
fascicolo: 1, volume: 29, anno: 2000,
pagine: 52 - 58
SICI:
0815-3191(2000)29:1<52:BFEBON>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
MICROBIAL-DEGRADATION; INSECTICIDES; NEMATODES; MOVEMENT; ETHOPROP; FIELD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Pattison, AB Queensland Dept Primary Ind, Queensland Hort Inst, Ctr Wet Trop Agr, POB 20, S Johnstone, Qld 4859, Australia Queensland Dept Primary Ind POB 20 S Johnstone Qld Australia 4859
Citazione:
A.B. Pattison et al., "Bioassay for enhanced biodegradation of nematicides in soil", AUSTRALAS P, 29(1), 2000, pp. 52-58

Abstract

In the Australian banana industry, burrowing nematode (Radopholus similis)is controlled by routine use of chemical nematicides particularly fenamiphos. A loss in efficacy with prolonged use of fenamiphos may be due to enhanced biodegradation by soil microbes. A simple and inexpensive method was developed to test soil for enhanced biodegradation by comparing nematode recovery from unsterile or sterile soil which had been treated with fenamiphos at 10 mu g/g soil with nematode recovery from untreated soil. Every 2 weeks, for 8 weeks, corn seedlings were planted in subsamples of the soil and inoculated with R. similis 2 days later. Recovery of R. similis alter 7 days from the corn roots was then used as an indicator of enhanced biodegradation. A soil with a long history of fenamiphos application, and reported to contain fenamiphos-degrading microorganisms, reduced the chemical's active time in unsterile soil to 2 weeks. Some soils which had not previously been exposed to fenamiphos contained microorganisms which rapidly degraded fenamiphos. A soil with enhanced biodegradation of fenamiphos did not prematurelydegrade cadusafos. Hence, if fenamiphos is rapidly degraded in soil, rotation with cadusafos may allow nematode management. Comparison of the corn seedling bioassay with a bioassay using Rhizoctonia solani and Aphelenchus avenae confirmed enhanced biodegradation. The corn seedling bioassay is relatively easy to establish and uses the same nematode species which attacks banana plants.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 05:16:23