<![CDATA[Sweet potatoes are food crops that provide carbohydrates. The application of chicken manure and NPK fertiliser can increase nutrient availability in sweet potato cultivation. This study aimed to determine the effects of appropriate dosages of chicken manure and NPK fertiliser, and their interaction, on the growth and yield of sweet potato plants. The study was conducted in Sukadamai Saree Village, Lembah Seulawah District, Aceh Besar Regency from September to December 2024. This study used a Randomised Block Design (RBD) with two factors: the dose of chicken manure (A) at three levels (5, 10, 15 tons/ha) and the dose of NPK fertiliser (N) at three levels (250, 300, 350 kg/ha). The parameters observed were plant length, stem diameter, number of primary branches, number of tubers, tuber length, and tuber weight. Research results: (1) The application of chicken manure and NPK fertilisers affects the growth and yield of sweet potato plants, (2) A statistically significant interaction was observed between chicken manure and NPK fertilisers on plant length at 30 and 45 DAP, stem diameter at 15 DAP, and tuber length. The combination of a higher dose of chicken manure (15 tons/ha) and a moderate application of compound fertiliser (300 kg/ha) represents the most effective strategy for maximising crop productivity.]]>
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