Soil Compaction and Oil Palm (Elaeis guineensis) Yield in a Clay Textured Soil

compaction treatments (1, 2 and 3 rounds per month), reported together vs. 0 (control), no vehicle trafficsignificant · 2006–2008; six years of compaction · Melentang Estate · Author-reported overall traffic-treatment/control summary across 1–3 monthly rounds and 0, 2 and 4 tonnes trailer weight. Approximately 12% higher FFB yield. Frequency, rather than trailer weight alone, drives the reported response. No separate single-combination tests or alpha inferred.