The effects of biochar-compost on soil properties and plant growth performance grown in a sandy-loam soil

Abstract Sandy soils properties with low nutrients availability and high porosity could be improved the combination application of biochar-compost to increase plant productivity. The objective this study was examine impacts different rates compost-biochar addition on sandy-loam soil cabbage ( Brassica chinensis L. var. parachinesis ) growth performance. oil palm empty fruit bunch biochar pyrolyzed at temperature ranging between 450 500°C. Different 0 until 20 t/ha -1 were arranged in a randomized block design greenhouse. planted polybag parameter (leaf number, height chlorophyll content) measured. incorporation 10 t ha- 1 showed significant increased pH when compared non-amended soil. highest rate which is ha exchangeable bases. Positive effects also found dry weigh biomass all rates. that has potential improve chemical