PHYTOSANITARY PROTECTION AGAINST PHYTOPHTORA INFESTANS MONT. DE BARY ATTACK IN POTATO CROPS FROM TRANSYLVANIA, IN RESPECT WITH CROSS-COMPLIANCE

Romania's status as full member of EU imposed the full adoption of cross-compliance requirements since 2014. In this context, our study aims to emphasize a methodology of phytosanitary protection against Phytophtora infestans Mont. de Bary attack in potato crops from Transylvania, taking into account the cross compliance requirements. The experiment was developed during a three years period 2012 - 2014, in a private farm, located in Padurenii village, county of Cluj, within a three factorial experiment, with the following factors: potato variety (Redsec and Roclas), fertilization (no fertilization, N50P60K80 mineral complex, compost), and treatment (Infinito 687.5 SC, Alcupral 50 PU, and Mimoten + Zytron mixture). Our study suggests that best solution for obtaining maximum potato production efficiency with respect of cross - compliance, is the use of Roclas variety, in field fertilized with N50P60K80, and application of conventional treatment with Infinito 687.5 SC. Research allows us to recommend the main issues to be taken into consideration for an appropriate methodology of phytosanitary protection against late blight attack in potato crops from Transylvania.