The effect of hydrogen cyanamide (Dormex) on flowering and cropping of different apple cultivars under tropical conditions of sub-optimal winter chilling

cianamidas clima tropical climat tropical cooling cosecha crop yield cyanamide cyanamides dormancy breakers enfriamiento floraison flowering harvesting hiver interruptores de latencia invierno malus sylvestris refroidissement rendement des cultures rendimiento de cultivos substance levant la dormance tropical climate winter zimbabwe