Abstract
Abstract The effect of clay and rice husk biochar application under minimum soil tillage on soil pore distribution of psamment and corn yield was conducted in Batang Anai District, Padang Pariaman Regency. Plot experiment consisting of four treatment (without clay or biochar; 20 ton clay/ha; 20 ton biochar/ha; and 20 ton biochar/ha + 20 ton clay/ha) with 3 replications. Soil samples were analyzed at the soil laboratory, Faculty of Agriculture, Andalas University Padang and Soil Laboratory, Bogor Soil Research Institute. Soil physical properties were categorized by soil criteria, while crop growth and yield data were statistically analyzed using F test and DNMRT at 5% level. Results showed that application of 20 ton/ha of clay and rice husk biochar improved soil physical properties of psamment namely: decreasing soil bulk density, increasing total soil porosity, aeration pores, and available water pores. The application of biochar and clay has also increased the growth and yield of corn.
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