Effect of biochar amendment on soil-silicon availability and rice uptake

Rice growth and its resistance to pests had been often constrained by soil-silicon (Si) availability.The purpose of this study was to assess the potential of biochar soil amendment (BSA) to improve Si availability in paddy soils. A cross-site field trail with BSA was conducted in six locations with different climatic and crop-production conditions across S China. Plant-available Si content befo…