Avaliação da eficiência de substrato produzido a partir de composto orgânico e casca de arroz carbonizada para a cultura do morango.

Abstract

This work aimed to evaluate the efficiency of substrates produced from organic compost of agro-industrial residues with different compositions of carbonized rice husk for strawberry crop. The research was conducted from June 26 to November 15 of 2015, in a rural propriety located in Passo das Pedras community, Rio Pardo County, RS. Brazil. The strawberry cultivation was done in a semi-hydroponic system using organic based fertilizer (bio-fertilizer and liquid poultry litter humus). The evaluated treatments were a commercial substrate and three substrates with the following blends: S1 (30% compost and 70% carbonized rice husk), S2 (40% compost and 60% carbonized rice husk) and S3 (50% compost and 50% carbonized rice husk). The evaluation was based on the number and weight of fruits of each substrate. The results indicated that the substrates with the best performance were the S2 and S3 (p<0.05), which showed an average of fruit by plant equal to 10,3 ± 2,0 (CV: 19,3%) and 10,3 ± 2,3 (CV: 22,3%), respectively, and an average of weight by plant equal to 180,1 ± 38,6 (CV: 21,4%) and 186,4 ± 42,1 (CV: 22,6%), respectively. In this way, these substrates are highlighted as the best alternative for strawberry crop, and can be an option to the use of turf and vermiculite in cultures that utilize an organic base for production.