Bio-efficacy of different neem formulations against onion armyworm (Spodoptera exigua)

The study was conducted to evaluate the bio-efficacy of different Neem formulations against onion armyworm. Specifically, to determine the best Neem formulation to control onion armyworm and evaluate its effect on the growth and yield of onion. In accordance with the Sustainable Development Goals (SDGs), the study supports SDG 2 (Zero Hunger), SDG 12 (Responsible Consumption and Production), and SDG 15 (Life on Land) by assessing the bio-efficacy of Neem-based formulations as a natural pest control technique. As a pesticide derived from plants, Neem serves as a substitute for artificial pesticides, reducing environmental contamination and reassuring food safety. It was conducted at Saguday, Quirino Province from December 2024 to April 2025. The treatments used in the study were: T1- Control, T2- Standard Neem, T3- NEB + Neem Formula 1, T4- NEB + Neem Formula 2, T5- NEB + Neem Formula 3. The experiment was laid out in Randomized Complete Block Design (RCBD) with three equal replications. Neem-based treatments, especially Neem Formulas, significantly increased the mortality of Onion Armyworm (OAW) larvae, reduced bulb damage, larval count, enhanced plant weight and yield. Although statistical analysis indicated no significant differences, Neem treatments led to increased crop yield compared to the control. These findings suggest that Neem can play a valuable role in sustainable agriculture by improving crop health and productivity published by the International Journal of Agronomy and Agricultural Research | IJAAR