Potential of Rhizobacteria from the Rhizosphere of Coffee Plants to Increase the Viability of Rice Plant Seeds

Abstract

Rhizobacteria is a type of biological fertilizer developed to increase plant production. The research aims to explore bacteria in the rhizosphere area of coffee plants and test their potential to increase the viability of rice seeds. The research was structured using a completely randomized design with treatment of 21 bacterial isolates and 1 control (without rhizobacteria) which was repeated 3 times so that there were 66 experimental units. The variables observed were vigor index, germination capacity, maximum growth potential, dry weight of sprouts, relative growth speed, uniformity of growth and 50% seed germination time (T-50). Observational data were analyzed using analysis of variance, and data that showed a real effect was followed by Duncan's Multiple Range Test at a confidence level of 95%. The results showed that rhizobacteria isolated from the roots of coffee plants could increase rice viability. The best treatment was obtained on isolate A8 both on the variables maximum growth potential, germination capacity, vigor index, uniformity of growth and dry weight of sprouts with an increase in each variable respectively by 21.63%, 23.61%, 27.03%, 25.17% and 82.05% compared to control.