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This document summarizes a study on assessing the soil quality of Ultisols under rubber crops in Simpang Empat District, Banjar Regency, South Kalimantan Province. The study found that: 1) soil physical properties did not limit rubber growth. 2) Some soil chemical properties, such as pH, organic matter, and levels of phosphorus, magnesium, and potassium, were below critical thresholds in some plots and thus did not fully support optimal rubber growth. Base saturation in 10-year rubber plots was less than 35

Author

Muhammad Ikhsan

Language

EN