Sugarcane holds the largest share of global sugar production. In Iran, this crop is mainly cultivated in Khuzestan province. This research aimed to investigate the yield responses of sugarcane to the factorial application of biofertilizer and N-Phuric acid. The experiment was conducted as a factorial arrangement in a randomized complete block design with three replications at the Karun Agro-Industry farms in Shushtar during the 2024-2025 growing season. Treatments consisted of the frequency of N-Phuric acid application (none, one, two, and three times) and the frequency of bacterial biofertilizer application (none, one, two, and three times). The results revealed that the main effect of N-Phuric acid was significant on the number of leaves per plant, while the main effect of biofertilizer significantly influenced the number of stalks per square meter, stalk diameter, stalk yield, total biomass, sugar yield, and harvest index. Additionally, the interaction between these two factors significantly affected stalk yield, total biomass, and sugar yield. Notably, the highest values for stalk yield (128 tons per hectare), total biomass (159,185 kg per hectare), and sugar yield (15.6 tons per hectare) were achieved in treatments without N-Phuric acid but with biofertilizer application (two or three times). These findings suggest that under the alkaline soil conditions of the region, biofertilizers alone—without the need for soil acidification—can significantly enhance both the quantitative and qualitative yield of sugarcane by improving nutrient availability and promoting growth. Applying biofertilizer three times compared to the control increased sugar yield by 50 percent. Therefore, the optimal use of biofertilizers can be recommended as a cost-effective and environmentally friendly management strategy for achieving sustainability in sugarcane cultivation.
Abdali Mashhadi A, Raeisi Lalary M R, Shomeli M, Motamedi H, Lotfi Jalal Abadi A. Yield responses of sugarcane to different levels of biofertilizer and N-Phuric acid. فیزیولوژی گیاهان زراعی 2025; 17 (67) :43-61 URL: http://cpj.ahvaz.iau.ir/article-1-1697-en.html