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Surya Darma

Publications (2)

The Impact of Treated Coal Waste Sludge on Paddy Soil Chemistry Rice Growth

Surya Darma & Arham Arham · International Journal of Plant & Soil Science · 2025

Mud from the coal washing pond, treated with lime, has spilled multiple times, resulting in pollution of the rice fields and sparking conflicts between local farmers and coal miners. The focus of this study was to determine the chemical properties of paddy field soil mixed with m...

Open access Research Article 10.9734/ijpss/2025/v37i35373

Suitability of Oil Palm Plantation on Tunjung Plateau´s Volcanic Parent Material in West Kutai Districts, East Kalimantan, Indonesia

Mulyadi Mulyadi, Doni Dhonanto & Surya Darma · International Journal of Plant & Soil Science · 2026

The study of Oil Palm plantation suitability on Tunjung Plateau Vulcanic parent materials in Wast Kutai Districts of East Kalimantan, Indonesia, has been done. The soil profile on two different physiographic, i.e.,on almost flate and undulating/hilly topography, was selected. The...

Open access Research Article 10.9734/ijpss/2026/v38i15919