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Open AccessArticle

Abamectin Efficacy on the Potato Cyst Nematode Globodera pallida

1
Institute for Sustainable Plant Protection, CNR, Via G. Amendola 122/D, 70126 Bari, Italy
2
Institute of Zoology, MECC, St. Academiei 1, 2028 Chisinau, Moldova
3
Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
*
Author to whom correspondence should be addressed.
Plants 2020, 9(1), 12; https://doi.org/10.3390/plants9010012
Received: 25 November 2019 / Revised: 13 December 2019 / Accepted: 17 December 2019 / Published: 19 December 2019
(This article belongs to the Special Issue Plant-Parasitic Nematode Management)
The potato cyst nematode Globodera pallida is a major pest of the potato crop. Abamectin is a biological pesticide showing high nematicide activity, but its efficacy to control G. pallida has not been investigated to date. In this study, combination of different abamectin concentrations ranging from 1.125 to 36 µg/mL x exposure times from 24 to 384 h were tested on the nematode in a hatching test. Abamectin induced mortality with LD50 value in the range of 13.23 (after 24 h) to 2.90 µg/mL (after 384 h). A glasshouse experiment was also performed in pots filled with soil infected with G. pallida in the presence of sprouted potato tubers cultivar “Spunta”. Abamectin at 4.5, 9.0, 18.0 and 36.0 µg/mL was used in comparison with nematicide fosthiazate. The doses of 18 and 36 µg/mL significantly reduced number of eggs, juveniles, cyst/g soil and reproduction rate in comparison to both untreated control and fosthiazate treatment. Soil applications of abamectin provided significant G. pallida control with LD50 and LD99.9 of 14.4 and 131.3 µg/mL, respectively. These results indicate the efficacy of abamectin to control G. pallida on potato crops and its potential use in organic agriculture or in an integrated pest management program. View Full-Text
Keywords: bio-pesticides; streptomycetes; nematode control; plant parasitic nematodes; nematicide bio-pesticides; streptomycetes; nematode control; plant parasitic nematodes; nematicide
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Sasanelli, N.; Toderas, I.; Veronico, P.; Iurcu-Straistaru, E.; Rusu, S.; Melillo, M.T.; Caboni, P. Abamectin Efficacy on the Potato Cyst Nematode Globodera pallida. Plants 2020, 9, 12.

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