Abstract
During 2004 – 2015 years, open field experiments were performed in Vegetable Research-Development Station Bacau - Romania, a in order to monitoring and evaluate the attack of Aphis fabae in climbing beanss, Aulacorthum solani (Kaltenbach), Macrosiphum euphorbiae (Thomas), Myzus persicae (Sulzer) in tomato. The beans aphid was identification since May on weeds and vegetable. The attack comes in June on climbing beans and continues until the maturity seeds of this species. In August climatic conditions were favorable for pests with a high temperature and low humidity. The aphid attack in climbing beans began in second decade of June, frequency of attack being 0.2 %. From the end of July to August it had reached 3.2%. The intensity of the attack in climbing beans was also low, ranging between 0.1 and 6.9%. The degree of aphid attack not exced 0,2%. The aphid attack in tomato had frequency ranges between 0,1 – 21,4%. The intensity of attack was higher in third decade of April – 16,3%, in seedling stage. The degree of attack was under 3,5%. The effectiveness of the products: NeemAzal-T / S - 0.5%, 75 Neem Oil - 0.5% Diatect V - 13.58% Diatect, V - 0.3%, Entomax - 0.15% Entomx - 0.1% were very good, being above 90.1% in control of beans aphid. Diatect V product we recommend to use in concentration of 0.3%. The number of aphides decreased strongly after 3, 5 and 7 days after treatment of insecticides. Treatment was significantly different to the untreated. The insecticide effect of plot was very good against black beans aphid. The surviving aphides in the treated plot were very small. The efficacy of: NeemAzal-T / S - 0.5%, 75 Neem Oil - 0.5% Diatect V - 13.58% Diatect, V - 0.3%, Entomax - 0.15% , Entomx - 0.1% was above 89.5%, in downward dynamics of tomato aphid populations in untreated variant.