PROTECTION AGAINST THE PROLIFERATION OF THE COLORADO BEETLE (LEPTINOTARSA DECEMLINEATA SAY) IN THE CONCEPT OF ORGANIC CULTURE AT THE POTATO

Ioan GONTARIU, Ioan-Cătălin ENEA

Abstract

In intensive agricultural production application of pesticides is inevitable.Within the rules of sustainable agriculture and good agricultural practice, targhet application of pesticides are necessary.Modern Plant Protection is bazed on the balance between the pest threat for crops and intensification of chemical treatment.The present paper intends to approach the efficiency of two bio-insect powders Lazer and NeemAzal on the viability of the pest in the conditions from Suceava, the experiments were carried out at A.R.D.S. Suceava in the year 2008 in field and laboratory. If we compare with the untreated witness, the egg hatching was in the ratio of 70-80% in 2-days period, on the treated lots with the two products, the hatching in the ratio of 60-70% was registered only after a few days, the “inhibitory” action of the hatching process maintaining even after the end of this process on the untreated lots. The civilized countries under the pressure of the people retired a lot of organophosphoric insecticides and carbamates from the production system, being replaced by alternatives. The reject of the pesticides is a chance for adopting biological products of fighting having as effect the result of some organic, healthy products which don’t endanger the human’s health. Approximately 5% from the surface cultivated with plants is occupied by the organic agriculture.

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