THE EFFECT OF GIVING BIOCHAR UREA-BAMBOO GRANULAR FERTILIZER ON THE GROWTH OF SHALLOT PLANTS (Allium ascaloniucm L.)

Dewa Ayu Ari Febriyanti

Dewa Ayu Ari Febriyanti

Keywords: Soil, biochar, granule, shallot plants, urea

Abstract

The use of urea-biochar granular fertilizer is intended to overcome the problem of inefficiency in the excessive use of urea fertilizer. The efficiency of urea is relatively low because 40-70% of N is lost from the soil. The purpose of this study was to determine the agronomic efficiency bamboo urea-biochar fertilizer on shallot plants. The research was conducted in the greenhouse of UPT Plant Pest and Disease Control Center in Celuk Sukawati Gianyar Village, in a Completely Randomized Design with a single factor consisting of 9 treatments and repeated 3 times. The treatments were U0B0 (control), U1B0 (with urea without biochar), U0B1 (with biochar without urea), S35 (35% biochar- coated granules), S30 (30% biochar-coated granules), S25 (25% biochar-coated granules), M35 (35% biochar matrix granules), M30 (30% biochar matrix granules), M25 (25% biochar matrix granules). Parameters observed were plant growth yields (height, weight of tubers and fresh litter, weight of tubers and oven-dried litter, number of tillers), fertilizer agronomic efficiency. The results showed that the S30 treatment significantly increased the shallot plant height by 43.67 cm, the weight of the oven-dried bulbs by 19.68 g and the RAE value by 362%, so that fertilization with the S30 treatment was the most efficient compared to other treatments and could be used by farmers in increasing the growth and yield of shallot plants.

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