Using of hydrogen cyanide against Ditylenchus dipsaci nematode present on garlic  

https://doi.org/10.17221/28/2016-PSECitation:Zouhar M., Douda O., Dlouhý M., Lišková J., Maňasová M., Stejskal V. (2016): Using of hydrogen cyanide against Ditylenchus dipsaci nematode present on garlic  . Plant Soil Environ., 62: 184-188.
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The stem and bulb nematode (Ditylenchus dipsaci) is a serious quarantine pest of vegetables spreading worldwide via seed and planting material. Currently, a hot water technique is used as the pre-seed treatment, which is difficult to execute and the risk of seed damage is high. The objectives of this study were to evaluate the (a) penetration of gaseous hydrogen cyanide (HCN) into garlic tissue; (b) HCN phytotoxicity, and (c) nematicide potential of HCN against D. dipsaci. Penetration of HCN into the core of the garlic clove was approximately 30% of the concentration inside the fumigation chamber after 30 h of exposure. Decreased emergency was observed only in the exposure treatment lasting 16 and more hours. Garlic cloves naturally infested by D. dipsaci were treated with HCN at a concentration of 20 g/m3 for 12, 18 and 24 h in a fumigation chamber, and 99% mortality was achieved in all three exposure times.  
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