An experiment was carried out under field conditions to determine: - the growth of muskmelon (Cucumis melo L.) throght accumulation of dry matter; - concentration and consequent accumulation of nutrients in the aereal parts of the plant at different growth stages; - exportation of nutrients at fruit harvesting, at the time of consumption. The experiment consisted of sampling at five growth stages - 15, 30, 45, 60 and 70 days after emergence - of competitive plants, which were cut at ground level, divided into stem and branches, leaves, flowers and fruits, to determine the quantity of dry matter and for chemical analysis of mineral macronutrients. The treatments, represented by sampling time, consisted of randomized block design with four replications. It was concluded that: - the growth was slow at the deginning, increasing later, especially between 30 and 45 days; - at the end of the cycle, the plant accumulated 905,88 g dry matter as follow: stem and branches - 18,38%, leaves - 30.32%, and flowers and fruits - 50.30%; - the concentration of nutrients in the aereal parts varied according to the age and part considered; - there was a tendency for reduction in the concentration of macronutrients, except for sulphur; - at 75 days, the aereal part accumulated, in milligrams per plant: 23.08 N, 3.46 P, 28.90 K, 12.74 Ca, 5.55 Mg, 1.595 S; - in a one-ton harvest the fruits exported about 1.78 kg N, 0.33 kg P, 2.64 kg K, 0.14 kg Ca, 0.21 kg Mg, 0.09 kg S.