Colapso interno em manga: níveis de adubação nitrogenada e armazenamento refrigerado dos frutos da cv. Tommy Atkins

Abstract

The incidence of internal breakdown at mango fruits cv. Tommy Atkins submitted at two levels of nitrogen fertilizing and refrigerated storage was determined. Fruits were collected in two different areas; one fertilized with 3 kg of N/ha and another with 7 kg of N/ha. The fruits were divided in two lots of 14 boxes. One lot was used for immediate analyses and the other was submitted to a pre refrigeration and storage for 15 days under refrigeration (10ºC, 90% UR). Symptoms of pulp and peduncle disintegration and splitting of the seed was used for experimental evaluation. A randomized block experimental design with treatments arranged in 2x2 factorial, with 7 replicates, was used. A higher incidence of internal breakdown was observed in the 3kg of N/ha treatment. The storage for 15 days under refrigeration showed higher incidence in internal collapse of the peduncle, with intensive symptoms.