Effect of nitrogenous fertilization and irrigation on growth, yield and active constituents of anise plants, Pimpinella anisum, L.

aceites esenciales agronomic characters ammonium nitrate ammonium sulphate chemical composition composition chimique crop yield engrais organique essential oils floraison flowering huile essentielle irrigation nitrate d'ammonium nitrato de amonio organic fertilizers pimpinella anisum rendement des cultures rendimiento de cultivos riego sulfate d'ammonium sulfato de amonio