Abstract

The effectiveness of different rates of Dimethyl disulfide (DMDS) applied tothe soil in drip irrigation was tested against the root-knot nematode Meloidogyneincognita in two plastic-house trials on melon and tomato in southern Italy. Thetrials were carried out in naturally infested sandy soils according to a randomizedblock design with 5 replicates per treatment. In both trials the DMDS ECformulation was applied at rates of 400 and 300 L/ha by drip irrigation with PVCdrip lines covered with virtually impermeable film (VIF). DMDS treatments werecompared with 1,3-dichloropropene (140 L/ha) and untreated controls. Plastic VIFwere removed 2 weeks after fumigations. Melons and tomatoes were harvested 5 and7 times, respectively, and the yields recorded. At the end of the crop cycles, thenematode attack on the roots was evaluated according to a 0-5 scale. Soil sampleswere collected in each plot to evaluate soil nematode population. All nematicidaltreatments significantly increased marketable yields of melon and tomato incomparison to the untreated controls (0.48 and 0.16 kg/m2). In the melon trial bothrates of DMDS (400 and 300 L/ha) did not significantly differ from each other (0.71and 0.70 kg/m2, respectively) and from 1,3-D (0.70 kg/m2). The same pattern wasobserved in the tomato trial, in which 2.78 and 2.16 kg/m2 of tomatoes were recordedwith the highest and lowest DMDS rates, respectively, in comparison to 2.78 kg/m2in 1,3-D treated plots. In the melon trial, final nematode population densities inDMDS and 1,3-D treated plots (0.2 eggs and juveniles/ml soil) were significantlylower than that observed in the untreated control (1.7). In the tomato trial, the soilnematode population density observed in the untreated control (18.4 eggs andjuveniles/ml soil) was significantly higher than those recorded in all DMDS and1,3-D fumigated plots (1 eggs and juveniles/ml soil). Also, in both trials and in alltreatments, root gall indices were significantly lower than those observed in theuntreated controls with no significant differences among the fumigant treatments.

Autore Pugliese

• Sasanelli Nicola

Tutti gli autori

• SASANELLI N.; DONGIOVANNI C.; SANTORI A.; MYRTA A.

Titolo volume/Rivista

Acta horticulturae

Anno di pubblicazione

2014

ISSN

0567-7572

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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