Includes bibliography (35-42)

Sweet pepper (Capsicum annuum) is a fruiting plant from the family Solanacee (nightshades), within the genus Capsicum, which is native to the northern regions of South America and southwestern North America. The plant produces berries of many colors, including red, green, and yellow, often with a pungent taste. Nano fertilizers are a new generation of fertilizers that utilize advanced nano technology to provide an efficient and sustainable method of fertilizing crops. Nano fertilizers regulate nutrient release, ensuring a consistent supply of nutrients, resulting in improved growth and production of sweet pepper.
This study was conducted to determine the growth and yield performance of sweet pepper applied with different levels of nano fertilizer. A RCBD layout was used with four treatments and replicated three times. It was conducted at Mati, San Miguel, Zamboanga del Sur, from October 2024 to February 2025. Results showed that the plant height, stem circumference, flowering, and maturity days have no significant influence from the different nano fertilizer application levels. However, a significant increase in fruit number per plant, weight per plot, and yield per hectare was observed in plants treated with 10 mL of nano-fertilizer (T4), which produced the highest fruit yield at 2,906.67 kg/ha, compared to 1,623.00 kg/ha in the control group (T1). Economic analysis showed that T4 also had the highest gross and net income with a 43% return on investment (ROl). These findings suggest that nano fertilizers, particularly at higher concentrations, can enhance fruit production and profitability in sweet pepper cultivation, making them a promising alternative for sustainable agricultural practices.