Alleviating soil acidity, aluminium and iron toxicity in an acid sulfate soil using lime and bio-organic fertilizer to increase rice yield

Rice (Oryza sativa) is a staple food for over half of the world's population. The production of rice should be increased because growth in rice production has been slower than the population growth. With no room for area expansion, improving the fertility of marginal soils (such as acid sulfate soils) is one of the ways to increase rice production and maintain food security in Malaysia. Acid sulfate soils are known to contain pyrite (FeS2) which upon oxidation results in the production of high amount of acidity (pH