A NEW MICROZONE FOR SEED POTATO PRODUCTION IN ROMANIA - HUEDIN AREA - IN CLUJ COUNTY

In the continental temperate climatic area virotical infection of potato was conditioned by the sources of virotical infection and by then viroses vectors. In Huedin micro area, situated intermountain in Cluj County at 600 m altitude, which humid and cool climate and isolated in space in natural way. Were tested 4 types of potato varieties sensitive or resistant at the main viruses of potato: PVY and PLRV. The results of researches was demonstrated that potato seed production can be obtained in the same quality with those produced into the seed traditional areals, when specific elements of classical technology are respected, as they are: in field isolation, early picking up and elimination of any virused plant, systematically control diseases and predators invasion mainly aphids, vegetation interruption at maxim fly of aphids

CHEMICAL CONTROL OF BEAN WEEVIL, ACANTHOSCELIDES OBTECTUS SAY IN STORAGE CONDITION

The paper presents the positive results obtained by some pesticides applied against the bean weevil - Acanthoscelides obtectus Say, after a synthetic rewiew of the potential chemical methods which may be used in the chemical control of the insectes harmful to the stored bean seeds. The chemical control is realised treatments wits syntetic pyrethroid (permetrin, deltametrin) and organophosphoric insecticides (malation, pirimifos metil, fenitrotion and chlrorpirifos-metil)

RESEARCHES RELATED TO THE CHEMICAL FIGHT OF THE COLORADO BUG LEPTINOTARSA DECEMLINEATA SAY

Between 1999-2002, Colorado bug fight experiences were annually organized in Cimpenesti. Experimental fields were organized on the land of certain cultivators of the area. The best results in fighting the Colorado bug were obtained with the following products: 290 FS Prestige – 0.8 l/ton; 480 SC Calypso – 80 ml/ha; SC 200 Confidor – 160 ml/ha; EC 10 Rimon – 0.25 l/ha; SC 150 Nomolt – 0.15 l/ha; D 50/500 Nurelle – 0.5 l/ha; SP 20 Mospilan – 0.06 l/ha

RESEARCHES IN ARTIFICIAL INFESTATION CONDITION AND STORAGE CONDITION OF SOME BEAN CULTIVARS AT BEAN WEEVIL DAMAGE, ACANTHOSCELIDES OBTECTUS SAY

Tests were made for finding possible resistant cultivars to the attack of bean weevil, Acanthoscelides obtectus Say., in storage condition. The infestation was made artifically in the laboratory condition. All the studied cultivars were attacked, but the attack was significantly different. These cultivars may be employed in the plant breeding activity