Diferentes composições de subtratos em mudas micropropagadas de Banana Nanica (Musa Cavendishii, L.)

Abstract

This study aimed to evaluate the effect of different combinations of materials for the preparation of substrates in order to assess growth and developmental parameters in addition to the chemical and physical properties in micropropagated banana plants "in vitro" cv. Nanica (Musa spp.), During the acclimatization period. For this, an experiment was set in a randomized block design with five different compositions of substrates (S1, S2, S3, S4, S5) with 4 repetitions totaling 20 plots, where the materials used for making the substrates were:. Coal, stems banana, poultry manure, carbonized rice husk and sawdust. They evaluated the plant height, pseudostem diameter, leaf area, electrical conductivity, dry and wet weight of roots, pseudostem, and dry weight of the leaves of the seedlings. For the variable total dry weight of the substrate 2 (10% coal, 20% sawdust, bedding 30% of avian, 30% of banana stems and 10% carbonized rice straw) averaging 3.5g It was what provided better results, as well as the variables, root dry weight and moisture, neck diameter, dry weight of leaves averaging 0.90 g, 4.11 g, 1.61 cm and 1.72 g. respectively. With the results obtained, it is concluded that the presence of organic matter and potassium favor the development of the aerial part of the plant. The substrate 5 (20% coal, 20% sawdust, bedding 30% of avian, 15% of banana stalk and 15% carbonized rice straw) was the one that showed the highest concentrations of nutrients and 2 substrate showed the best values for the plant attributes.