DEVELOPMENT AND PRODUCTION OF BANANA ‘GRANDE NAINE’ IN DIFFERENT MANAGEMENT SYSTEMS FOR ASSOCIATION WITH BLACK SIGATOKA IN VALE DO RIBEIRA REGION (SP)

ABSTRACT

This study aimed to evaluate development and production of banana plant ‘Grande Naine’ under different management systems with black leaf streak presence at Vale do Ribeira, SP (Brazil). For the experiment it was used micropropagated seedlings of ‘Grande Naine’ banana that was planted in field in a completely randomized design with five treatments (management systems): interspersed planting; fungicide control; defoliation + interspersed planting; defoliation + fungicide control and control, which were subdivided in time (two production cycles), with eight repetition and one plant per repetition. It was evaluated the following parameters: plant height, pseudostem diameter, number of active leaves at blooming and at harvest, marketable fruits fresh weight, productivity, number of hands, number of fruit, total fresh weight and individual fresh weight of the 2nd hand, length and diameter of 2nd hand fruits. Data were submitted to variance analysis by F test and the significant means were compared by Tukey’s test (5% probability). It can be conclude that fungicides applications were effective for black leaf streak control, showing better results in plants development and production and also in fruit quality of cultivars Grande Naine. No differences were observed when fungicide application was associated with defoliation. The interspersed planting affected negatively all the development and production parameters of cultivar Grande Naine.

Index terms
Musa spp., Mycosphaerella fijiensisMorelet; control disease; defoliation; chemical control