Kulasooriya, S.A.2021-09-132021-09-132005Aquatic Ecology of Rice Fields by C.H. Fernando, F. Goltenboth and J. Margraf:p.271-296https://dl.nsf.gov.lk/handle/1/25282AgricultureRice productionNitrogen fixationBiofertilizersNitrogen fixing bacteriaAzollaSymbiosisCyanobacteriaGreen manureFlood tolerant legumesNitrogen fixation in rice fieldsBook Chapter