The bacterial mixture effect of Azotobacter and Azospirrilum on nitrogen content and harvest date of upland red rice cultivar

Abstract

The research aims were to analyse the effect of bacterial mixture of Azotobacter and Azospirrilum on the nitrogen content and harvest date of upland red rice. This research was conducted in Agriculture Farm of Agriculture Faculty in Halu Oleo University. The research was arranged in a split plot design. The bacterial mixture dosage as main plot and different of cultivar as sub plot. The bacterial mixture dosage were without application bacterial mixture, Bacterial combination mixture of Azotobacter 2.5 L ha−1 + Azospirillum 2.5 L ha−1, and Bacterial combination mixture of Azotobacter 5.0 L ha−1 + Azospirillum 5.0 L ha−1. The cultivar tested were Labandiri, Jangkobembe, Ranggohitam, and Paedara. This research shows that application of bacterial mixture had no significant effect on nitrogen leaf content, but had a significant effect on flowering time and harvesting. It was found that flowering time tended to accelerate, but on harvesting-date parameters tended to be prolonged.