Articles
THE EMULSIFIABLE FORMULATIONS OF DIMETHYLDISULFIDE (DMDS) AND ITS MIXTURES WITH CHLOROPICRIN AS ALTERNATIVES TO METHYL BROMIDE
Article number
883_18
Pages
163 – 170
Language
English
Abstract
Dimethyl disulfide (DMDS) is an important compound of Allium spp., especially of garlic.
Although its fumigant effects are recently discovered, DMDS has been used by petrochemical industry and even as aroma agent because of its strong smell to garlic.
DMDS is a wide spectrum fumigant with nematicidal, fungicidal, insecticidal and herbicidal effects.
We have studied its effects as an alternative to Methyl bromide in a set of experiments since the year 2003 to 2008. DMDS stand alone or mixed with chloropicrin at 50 or 25% were applied, as emulsifiable formulations, through the drip irrigation system and were also compared to the mixtures of 1,3-dichloropropene + chloropicrin.
Experimental plots were established in two locations of Valencian Country (Spain). After disinfestations, a pepper crop was established to monitor agronomic behavior.
DMDS stand alone, at high rates (107 g/m2), have a remarkable herbicidal capacity; at lesser dosage, its mixtures with chloropicrin own an excellent fumigant effect that is improved when applied under VIF sheet.
The fungicidal effect is also improved by the mixture.
Once the application technique was debugged The fruit quality as well as the yield is alike to those obtained with the classical methyl bromide soil disinfestation technique and the mixtures of 1,3-dicholopropene and chloropicrin.
Although its fumigant effects are recently discovered, DMDS has been used by petrochemical industry and even as aroma agent because of its strong smell to garlic.
DMDS is a wide spectrum fumigant with nematicidal, fungicidal, insecticidal and herbicidal effects.
We have studied its effects as an alternative to Methyl bromide in a set of experiments since the year 2003 to 2008. DMDS stand alone or mixed with chloropicrin at 50 or 25% were applied, as emulsifiable formulations, through the drip irrigation system and were also compared to the mixtures of 1,3-dichloropropene + chloropicrin.
Experimental plots were established in two locations of Valencian Country (Spain). After disinfestations, a pepper crop was established to monitor agronomic behavior.
DMDS stand alone, at high rates (107 g/m2), have a remarkable herbicidal capacity; at lesser dosage, its mixtures with chloropicrin own an excellent fumigant effect that is improved when applied under VIF sheet.
The fungicidal effect is also improved by the mixture.
Once the application technique was debugged The fruit quality as well as the yield is alike to those obtained with the classical methyl bromide soil disinfestation technique and the mixtures of 1,3-dicholopropene and chloropicrin.
Publication
Authors
V. Cebolla, D. Llobell, A. Oliver, L.M. Valero, F. Torró, A. Hernández
Keywords
pepper, drip irrigation, Cyperus rotundus, Phytophthora capsici, 1,3-dichloropropene, emulsifiable
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