<![CDATA[Tomato is an economically important horticultural crop valued for its nutritional quality and widespread consumption. The application of organic fertilizers, particularly fermented chicken manure, offers a sustainable approach to improving crop productivity and soil quality. This study aimed to evaluate the effects of tomato variety and fermented chicken manure dosage on growth, flowering, and yield performance. The experiment was conducted from October to December 2025 in Sumbawa Regency, Indonesia, using a split-plot design with three replications. Two tomato varieties(Gustavi F1 and Servo F1) were evaluated as the main plot factor, while four fermented chicken manure dosages (0, 50, 100, and 150 g plant⁻¹) were assigned as the subplot factor. Data were analyzed using analysis of variance (ANOVA), followed by Tukey’s HSD test at the 5% significance level. Tomato variety significantly influenced growth and yield performance, with Servo F1 showing superior early growth and yield attributes, whereas Gustavi F1 produced higher yield performance during the final harvest period. Fermented chicken manure application improved vegetative growth and yield components compared with the unfertilized control, with 100 g plant⁻¹ providing the most favorable response. Significant interactions between variety and fertilizer dosage were observed for several growth and yield parameters, indicating different varietal responses to fertilizer application. The combination of appropriate tomato varieties and fermented chicken manure application, particularly at 100 g plant⁻¹, enhanced tomato productivity and provides a sustainable nutrient management strategy under tropical growing conditions.]]>
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