Control of Metcalfa pruinosa (Hemiptera: Flattidae) on kiwi orchards in the prefecture of Kavala
D. RAPTOPOULOS1, M. KONSTANTOPOULOU2, P. MILONAS3, N. BABILIS1, A. SIDIROPOULOS4 and S.S. ANDREADIS5
1NovAgrica Hellas S.A., 10678 Athens, Greece
15th Panhellenic Entomological Congress
Metcalfa pruinosa (Say) (Hemiptera: Flatidae) is a polyphagous species native of North America, which was introduced into Europe in the late 80’ causing severe damage on a variety of trees, shrubs and herbs. In Greece, kiwifruits (Actinidia deliciosa: Actinidiaceae) are among the most important hosts of M. pruinosa.Over the last few years a significant infestation was noticed in the area of Chrysoupoli on kiwifruit orchards. Adults, but especially larvae, are covered with a white epicuticular wax filament affecting negatively the quality of the fruits and making the plants to look unpleasant. However, the most severe damage is caused by the adult’s honeydew secretions as they feed on the sap. Although control of M. pruinosa is of outmost importance to kiwifruit growers the number of authorized plant protection products in the Greek market is inadequate.
Monitoring Thaumetopoea pityocampa (Lepidoptera: Thaumetopoeidae) populations and their management by employing mating disruption
A. MICHAELAKIS1, P.G. MILONAS2, D.P. PAPACHRISTOS1, D.CH.KONTODIMAS1, F. KARAMAOUNA3, C.M. PONTIKAKOS4, D. RAPTOPOULOS5,N. BABILIS5 and M.A. KONSTANTOPOULOU6
1Lab. of Agricultural Entomology, BPΙ, 2Lab. of Biological Control, BPI
14th Panhellenic Entomological Congress
The pine processionary moth Thaumetopoea pityocampa (Lepidoptera, Thaumetopoeidae) is one of the major defoliator pine pests in southern Europe and North Africa. Moreover, last-instar larvae may liberate microscopic urticating hairs, which can cause severe irritation to the skin and mucous membrane, often leading to strong allergic reactions in humans. Although several alternative methods have developed worldwide (biological, biotechnological, environmental management etc) in Greece, the control is based mainly on the use of chemical agents. The aim of the study was the monitoring population of pine processionary moth in the area of attiko alsos (Attica-Greece) and the evaluation of mating disruption control method.
Toxicity of TETRASTOP® on the black bean aphid Aphis fabae (Hemiptera: Aphididae)
A. MARTINOU1, P. MILONAS1, D. RAPTOPOULOS2, N. BABILIS2 and M. KONSTANTOPOULOU3
1Benaki, Phytopathological Institute,
14th Panhellenic Entomological Congress
In recent years effort is being driven towards the development of biorational products with acaricidal or insecticidal potency similar to that of the chemical ones but would not allow insects to develop resistance, would have low mammalian toxicity and would degrade rapidly in the environment.
• have acute toxic effects,
The active ingredients in TETRASTOP®, farnesol and nerolidol are sesquiterpene alcohols of natural origin. They are constituents of the essential oils of many plant species and both of them are of GRAS status (Generally recognised as Safe), conform to FDA (US Food and Drug Administration) requirements and arerecognised by FEMA (Flavour Extracts Manufacturing Association). They are approved for use in the preparation of foodstuffs. The main area of application is for the manufacture of Flavours and Fragrances.The toxicity of TETRASTOP® was tested in laboratory bioassays against nymphs and adults of the aphid Aphis fabae Scopoli. Bioassays were done in the laboratory at 25C. Aphid colony was maintained on broad bean plants. Ten potted broad bean plants were sprayed till run-off at different concentrations of the product. Mortality was assessed 24 h later. In all concentrations used, tetrastop was found to be toxic for aphids. The highest mortality both for nymphs and adults was recorded at the concentration of 1.5ml/l. The LC50 values were estimated at 0.60 and 1.14 ml/l for nymphs and adults respectively.