Abstract
Allium cepa L. is a horticultural commodity that influences inflation. The objective of the study was to determine land suitability class and factors increasing the shallots productivity in North Padang Lawas. The study was conducted in 6 sub-districts, North Padang Lawas District, North Sumatra in period of May-August 2019. Survey method to obtain data on shallot farming (R/C ratio) and soil sampling were using a purposive sampling technique by descriptive exploratory survey method, with an analysis unit of the Land Mapping Unit (LMU). The results showed that the potential land suitability class increased to be moderately suitability (S2). Land quality and shallot production can be improved by planting shallots at the end to the beginning of the rainy season, organic matter application >5 t ha−1 continuously, certified high yielding varieties, nutrient management, and integrated pest control. If land management and cultivation techniques are implemented properly, the current R/C ratio of 1.31 can be improved. This can cater the local market also reduce inflation.
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