Tavola rotonda “Le declinazioni della formazione nella sicurezza organizzata”

Convegno "La cultura della sicurezza fra organizzazione e formazione" Bari 20 novembre 2015 Tavola rotonda: “Le declinazioni della formazione nella sicurezza organizzata

Notulae to the Italian native vascular flora: 4

In this contribution new data concerning the distribution of native vascular flora in Italy are presented. It includes new records, exclusion, extinction and confirmations to the Italian administrative regions for taxa in the genera Androsace, Artemisia, Fragaria, Melampyrum, Myosotis, Petrorhagia, Phillyrea, Rosa, Rumex, Spiranthes, Trifolium, and Vicia. Furthermore, a new combination in the genus Omalotheca is proposed

Ozonated water reduces susceptibility in tomato plants to Meloidogyne incognita by the modulation of the antioxidant system

Few studies have been carried out on the effect of ozonated water (O3wat) on the oxidative stress of root systems and, in particular, in combination with biotic stress. The aim of this study was to determine whether aqueous ozone is effective in the control of root-knot nematode (RKN) infection and to investigate the concomitant changes in the basal defence system. A tomato cultivar susceptible to Meloidogyne incognita was treated with O3wat as a soil drench. No negative effects were seen following ozone application in comparison with the control under the exposure conditions used. The treatment reduced significantly the nematode infection rate and induced changes in the morphology of nematode feeding sites, some of which were characterized by visible symptoms of senescence. The antioxidant response, as well as parameters of oxidative damage, were examined in untreated and O3wat-treated galls at 2, 4 and 7 days after inoculation and compared with uninfected roots. High levels of reactive oxygen species (ROS), H2O2 and malondialdehyde were generated in galls in response to combined abiotic and biotic stresses. Throughout the experimental period, the activities and relative transcript levels of the antioxidant enzymes catalase, superoxide dismutase and ascorbate peroxidase produced different responses when exposed to ozone treatment and/or infection. The results demonstrate how O3wat protects tomato against the RKN M. incognita through the modulation of basal defence mechanisms

Abamectin efficacy on the potato Cyst nematode Globodera pallida

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 ecacy to control G. pallida has not been investigated to date. In this study, combination of dierent abamectin concentrations ranging from 1.125 to 36 g/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 g/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 g/mL was used in comparison with nematicide fosthiazate. The doses of 18 and 36 g/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 g/mL, respectively. These results indicate the ecacy of abamectin to control G. pallida on potato crops and its potential use in organic agriculture or in an integrated pest management program

Review on Control Methods against Plant Parasitic Nematodes Applied in Southern Member States (C Zone) of the European Union

The European legislative on the use of different control strategies against plant-parasitic nematodes, with particular reference to pesticides, is constantly evolving, sometimes causing confusion in the sector operators. This article highlights the nematode control management allowed in the C Zone of the European Union, which includes the use of chemical nematicides (both fumigant and non-fumigant), agronomic control strategies (crop rotations, biofumigation, cover crops, soil amendments), the physical method of soil solarization, the application of biopesticides (fungi, bacteria and their derivatives) and plant-derived formulations. The authors analyze the use of these strategies and substances in organic agriculture as well as in Integrated Pest Management (IPM) programs