The effects of chemical and organic fertilization were studied on growth of 'Poncã' mandarin orchard. The organic fertilization was made with manure during two years at the 'Poncã' mandarin orchard formation (1-2 year old). In the first year the manure levels that were put were as follow: 7.5; 15.0; 22.5 and 30.0 Kg per plant and 400 g of ammonium sulfate per plant. In the second year the manure levels were: 15.0; 22.5; 30.0 and 37.5 Kg per plant and 800 g of ammonium sulfate per plant. During the two years the fertilization were put in three applications. The parameters evaluated were: plants height, stem diameter, volume, projection and circumference of plant. The experiment was entirely randomized with split plots in time and 3 replications. The plots were the fertilization systems and the subplots were the evaluation time. The manure applications enhanced the plants growth. The chemical and organic fertilization showed the same growth on the 'Poncã' mandarin formation orchard.
Citrus reticulata; 'Poncã' mandarin; manure
