Efficacy of combined beneficial micro-organisms in the vegetative growth of sugarcane (Saccharum officinarum) variety phil 2006-2289 with reduced recommended nitrogen

This study investigates the use of beneficial microorganisms, specifically Acetobacter and Azospirillum, as a sustainable alternative to synthetic nitrogen fertilizers in sugarcane (Saccharum officinarum) production in Piat, Cagayan. Due to the environmental and economic challenges associated with excessive nitrogen fertilizer use, this research aimed to assess the impact of these microorganisms on sugarcane growth while reducing reliance on synthetic nitrogen. The study was conducted using a randomized complete block design (RCBD) with four treatments, including a control and three levels of nitrogen application (100%, 50%, and 25%) combined with beneficial microorganisms. Key growth parameters, including plant height, number of millable tillers, stalk diameter, and leaf color intensity, were measured. Results showed that the application of beneficial microorganisms significantly enhanced sugarcane growth, with reduced nitrogen inputs (up to 50%) still yielding comparable or even superior results in plant height and number of millable tillers compared to the control. These findings suggest that Acetobacter and Azospirillum can effectively improve sugarcane productivity while reducing the environmental impacts of excessive nitrogen fertilizer use. The study recommends the adoption of microbial inoculants as part of sustainable fertilizer management practices in sugarcane farming published by the International Journal of Agronomy and Agricultural Research | IJAAR