Using agricultural originated biochars to improve chemical properties of an acid soil and wheat yield

Abstract

Biochar is the carbon-rich product obtained when organic material underwent pyrolysis. When applied to soil, biochar is claimed to have positive influence on soil quality and productivity could be improved. Purpose The objective of this study was to evaluate the effect of biochars generated from various agricultural wastes on soil chemical properties of moderate acidic clayey loam soil and wheat yield. Methods Green house pot experiment has been conducted to gain insight on effect of biochars originated from agricultural biomass on soil chemical quality and wheat yield. The four types of biochars used were; rice husk biochar, hazelnut waste biochar, wheat straw biochar, and tea waste biochar. The biochar application rate was 2%. Results All the applied biochars altered soil pH signifying liming potential of biochars and their effectiveness on improving the quality of acid soils. Biochar applications showed varied effects on soil properties and wheat yield components. Conclusion Hazelnut waste biochar demonstrated higher capacity on improving both soil chemical parameters and wheat yield components. Tea waste biochar improved most of soil chemical parameters but not wheat yield. Observed variation on chemical properties and yields suggesting that composition of biochar has primary effect on influencing the quality of soil and yield.