Nutrients repartition in the coffee branches, leaves and flowers

The nutrients repartition in the coffee (Coffea arabica L.) branches, leaves and flowers were studied at anthesis of the first reproductive phase for Mundo Novo IAC 388-17 cultivar grafted on Apoata IAC 2258 (4,000 plants ha(-1)) and Catuai Amarelo IAC 62 (5,000 plants ha(-1)) cultivars. At flowering, the reproductive branches were collected using its median third part computing 37 and 29 flowering branches of Mundo Novo and Catuai Amarelo cultivars, respectively, where the flowers, leaves and branches were separated. The coffee flowers are an important physiological drain of nutrients, changeable among cultivars; the nutrients accumulation by Mundo Novo and Catuai Amarelo cultivars was verified before the anthesis, at the beginning of Spring season, and the total Mg extraction by flowers represents 52% of the flowers, leaves and branches extraction, indicating that the coffee fertilization must initiate before flowering phase.