Effect of gibberillic acid and a mixture of micronutrients (nutarmine) on earliness, head yield, and pre and postharvest quality of globe artichoke, Cynara scolymus L.

acide gibbérellique application methods calidad caracteres de rendimiento composante de rendement crecimiento croissance cynara scolymus gibberellic acid growth méthode d'application métodos de aplicación oligo-élement oligoelementos precocidad precocity précocité quality qualité trace elements yield components ácido giberelico