<![CDATA[This research was designed to evaluate the impact of integrated onion cultivation technology combined with local legume ground cover crops on soil fertility and crop stability in East Nusa Tenggara (NTT), Indonesia. Conducted in highland areas at altitudes of 700–1,200 meters above sea level, the study benefited from a cool climate that supports agricultural activities. Shallots (Allium ascalonicum L.), one of Indonesia’s leading commodities, were the focus due to their economic importance and widespread cultivation by farmers. The methodology employed soil testing to assess fertility, emphasizing chemical properties such as soil organic matter, nitrogen, phosphorus, potassium, cation exchange capacity, and magnesium. The findings revealed that integrated cultivation practices enhanced soil organic matter, improved water use efficiency, and stabilized shallot productivity. However, the study also highlighted challenges, particularly unbalanced fertilization and declining soil organic matter, which negatively affect soil fertility and agricultural productivity. These issues underscore the importance of nutrient supplementation through appropriate fertilization to sustain yields. By evaluating soil fertility status, the research provides practical insights for farmers in managing agricultural land more effectively. It emphasizes the necessity of adopting modern agricultural technologies and sustainable practices to preserve natural resources while boosting productivity. Overall, the study contributes valuable knowledge to the agricultural sector, reinforcing the role of soil fertility management in ensuring long-term food security and supporting Indonesia’s agrarian economy. The results are expected to guide farmers in East Nusa Tenggara toward improved practices that enhance shallot yields and maintain environmental sustainability]]>
