Roberto Santinato

Avaliação do uso de fertilizantes organominerais e químicos na fertirrigação do cafeeiro irrigado por gotejamento

In order to evaluate coffee fertigation using different sources of mineral and organic fertilizers, comparing with conventional application, an experiment was installed in the Experimental Field -Fazenda Escola-, Uberaba in the State of Minas Gerais, Brazil, in a sandy soil, 850 m of altitude, with coffee -Catuai Vermelho IAC 144-. The following treatments were applied: chemical conventional top dressing; top dressing with conventional fertilizers, through fertigation; top dressing manuring with appropriate fertilizers for fertigation; solid organomineral fertilizers, through soil and liquid organomineral fertilizers, through fertigation. For comparison purposes, the same amounts of N, P2O5 and K2O were maintained for the different treatments. Irrigation control was accomplished by using a automatic weather station. After four harvests, it may be concluded that the sources of fertilizers used, in fertigation and in conventional application in the soil, did not show significant effects in coffee yield. Regarding the final quality of the coffee, appraised by the sensorial test in different treatments. No significant differences were verified among the treatments.