Potensi Bakteri Rhizosfer sebagai Pupuk Hayati pada Persemaian Tanaman Sengon (Paraserianthes falcataria).

Abstract

Biological fertilizer is one of alternative fertilizer from nitrogen fixing bacteria for albizia. The aim of this research was to utilize rhizosfer bacteria from forest soil as biological fertilizer for albizia nursery (Paraserianthes falcataria). Growing media for albizia seedling was polybag filled of acid soil from Jasinga (Ultisol type) with pH 4.7 and peat with ratio 2:1. Rhizosfer bacteria used in the study was Burkholderia cepacia with isolate codes L6.5 and L10.1. Streak quadrant results showed rhizosfer bacteria had coccus form, was not absorb pink color, and had convex elevation. Rhizosfer bacteria isolate L6.5 and L10.1 that were added with ½ N from NPK fertilizer for albizia nursery showed similar influence with fertilization using NPK dosage as recommended. NPK fertilizer with ½ N dosage that was added to rhizosfer bacteria showed influences at root length, lateral root amount, crown length, wet weight, dry weight, and nodule amount compared with control.