Evaluation of the Application of Rice Husk Biochar and Various Types of Microbes on Physiological and Characteristics of Shallot Plant Bulbs (Allium ascalonicum L.) P Wijaya1, E Syamun2* and S A Syaiful2
1 Agrotechnology Master Program, Faculty of Agriculture, Hasanuddin University, Jl. Perintis Kemerdekaan, Km. 10, Tamalanrea, Makassar 90245, South Sulawesi, Indonesia.
2 Agrotechnology Study Program, Faculty of Agriculture, Hasanuddin University, Jl. Perintis Kemerdekaan, Km. 10, Tamalanrea, Makassar 90245, South Sulawesi, Indonesia.
*Corresponding email: elkawakibsyam[at]gmail.com
Abstract
Shallot is a popular and widely developed horticultural crop in Indonesia. This study aims to evaluate the application of rice husk biochar and various types of microbes (Trichoderma asperellum, Beauveria bassiana, and Metarhizium anisopliae) on the physiology and bulb characteristics of shallot (Allium ascalonicum L.). The research was conducted at the Teaching Farm, Faculty of Agriculture, Hasanuddin University, Makassar. This research was conducted from July to November 2022. The research design used a split plot design. The main plot was rice husk biochar with 3 levels, namely without biochar/control (b0) = 0 t ha-1, b1 = 2 t ha-1, and b2 = 4 t ha-1. As subplots, there were three types of microbes with 4 levels, namely without microbes/control = m0, m1 = Trichoderma asperellum, m2 = Beauveria bassiana, and m3 = Metarhizium anisopliae. The results showed that there was an interaction between the 4 t ha-1 rice husk biochar treatment and various types of microbes, namely the Trichoderma asperellum treatment with the highest chlorophyll index (19.70). The treatment of various types of microbes, namely the Trichoderma asperellum treatment, gave the best results on bulb height (2.75 cm) and the number of bulbs per plant (1.61).
