Researches regarding the influence of irrigation on vitamins content at celery (Apium graveolens var. rapaceum)

The paper includes some results of the investigations held between 2009 - 2011 in the conditions Nicula - Gherla, Cluj county, the influence of factors of production (irrigation regime, fertilization, biological material) on the content of vitamins (B6, B9 and C ) at the celery culture. It was found that the best results, respectively a higher vitamin content was obtained in irrigated variants at a humidity threshold of 80% of active moisture interval (AMI).