The role of vermicompost and PGPR on growth and formation of bulbils shallot (Allium cepa L. Aggregatum)

Abstract

Abstract One of the effects of climate change is a decrease in land productivity and subsequently causes a decrease in crop production. The decrease in land quality will be higher with the use of inorganic fertilizers. Alternative solutions to these problems are the use of vermicompost fertilizers and PGPR. The aim of this research was to examine the role of Vermicompost fertilizers and PGPR on the growth and formation of bulbil tubers. The research design used Randomized Complete Block Design (RCBD) with 2 factors, the first factor was Vermicompost (5 tons ha−1, 10 tons ha−1, 15 tons ha−1, 20 tons ha−1), the second factor was PGPR (with PGPR and without PGPR), repeated as many as 3 times. The results showed that the combination of Vermicompost and PGPR significantly affected the number of bulbils, the combination of vermicompost 5 tons ha−1 + with PGPR produced the highest bulbils. Vermicompost and PGPR had no significant effect on plant height, net assimilation rate, fresh weight, bulb weight, number of bulbils, and number of bulbs. There was no significant interaction between the treatment of vermicompost and PGPR on plant height, net assimilation rate), fresh weight, bulb weight, and a number of bulbs.