Soil Science Society of America Journal · 1980 · 15 citations · 0 references
AgricultureAgronomyCrop SciencesPhycologyPlant NutritionSoil FertilityNitrogen CycleNitrogen ManagementNitrogen NutritionNitrogen RecoveryNutrient Uptake By PlantsPlant Nutrient UptakeAlgal Nutrient RecoveryBiological Nitrogen TransferBlue-green Algal CulturesEpiphytic AlgaeGreen Algal CultivationNitrogen Uptake DynamicsNutrient Uptake By AlgaePlant Nitrogen Uptake
Abstract Uptake of N from a blue‐green alga ( Aulosira 68) by rice ( Oryza sativa L.) was studied in a greenhouse pot experiment. When a suspension of the alga was buried 5–7 cm deep, 52% of the N added was recovered in the grain and straw of the first rice crop, and an additional 5% was recovered by a ratoon crop and by a subsequent transplanted crop. Additions of NH 4 Cl equivalent to 100 kg N/ha did not affect the recovery of algal N. Surface placement of the alga reduced recovery by the first crop to 37% of the added N.