Effect of algicides on urea fertilizer efficiency in transplanted rice : 1. Floodwater chemistry and biota Muirhead, W.A. De Datta, S.K. /Roger, Pierre-Armand Gusto, R.M. RIZ IRRIGUE FERTILISATION DU SOL ENGRAIS AZOTE ESSAI SAISON SECHE SAISON HUMIDE BIOMASSE ALGALE CHIMIE DE L'EAU PH OXYGENE AZOTE ARA EVOLUTION ALGICIDE 1989 text https://www.documentation.ird.fr/hor/fdi:30618 fdi:30618 Muirhead W.A., De Datta S.K., Roger Pierre-Armand, Gusto R.M.. Effect of algicides on urea fertilizer efficiency in transplanted rice : 1. Floodwater chemistry and biota. 1989, 21, 95-107 EN PHILIPPINES