Increasing the Effectivity of Liquid Organic Fertilizer Enriched with Enterobacter cloacae to increase Phosphate Availability and Yield of Maize in Inceptisols

Abstract

Inceptisols have problems of low availability of phosphorus. To improve soil phosphate and P fertilizer efficiency, it is necessary to develop fertilizer enriched with phosphate solubilizing bacteria (PSB). Liquid organic fertilizer enriched with PSB is expected to increase the efficiency in fertilization and improve the yield of sweet corn plants. This study was aimed to determine the effectiveness of liquid organic fertilizer enriched with Enterobacter cloacae on phosphate availability and increase the yield of maize (Zea mays L.) in Jatinangor Inceptisols. This experiment has been carried out at the Laboratory and Experimental Garden, Jatinangor, West Java, Indonesia with altitude of ±725 m above sea level. This experiment was conducted from March to September 2021. This experiment used Randomized Block Design (RBD) with three repetitions. The experiment showed the 10 L ha-1 of liquid organic fertilizer enriched with Enterobacter cloacae indigenous from Inceptisols enhanched the availability of phosphate (22,48 mg kg-1) and yield of maize (14,11 ton ha-1). Liquid organic fertilizer enriched with Enterobacter cloacae can reduced 50% of P fertilization and proposed as an alternative corn fertilizer and increased the yield of maize up to 55%, because Enterobacter cloacae to increase P solubility that caused soil available P increased.