Optimum ratio and type of Azolla microphllya with cattle manure for Eudrillus eugeniae growth and vermicompost properties

Abstract

The purpose of this research was to study the bedding patterns that were suitable for raising earthworms. The experimental design was 2 x 2 x 5 factorial in a completely randomized with 3 replications. Factor 1 was the preparation of bedding (including non-compost (normal) and pre-compost bedding for 15 days), factor 2 was Azolla forms (viz. fresh and dried samples), and factor 3 was the ratio of cow manure and Azolla 10:90, 30:70, 50:50, 70:30 and 90:10 (%v/v). After raising earthworms in bedding for 45 days, the earthworms were separated from the bedding and measured body weight. It was found that earthworms in normal bedding at the ratio of cow manure and fresh Azolla 90:10 and 70:30 had the highest body weight, not being statistically different. In addition, the properties of vermicompost from various bedding were analyzed after raising earthworms for 45 days. The results showed that bedding that had been pre-composted and contained a ratio of cow manure and Azolla at 10:90 presented high amounts of total nitrogen and phosphorus. Therefore, choosing the appropriate form of bedding depends on the production goal of the farmers, whether they want a product of earthworm or vermicompost.