1977 · 150 citations · 0 references
AgricultureAgronomyCrop SciencesNutrient ManagementPlant NutritionSoil FertilityAlgal CultivationNitrogen AssimilationNitrogen FixationNitrogen ManagementNitrogen NutritionNutrient AvailabilityBlue-green Algal CulturesNitrogen Fertilizer ManagementNitrogen Fertilizer ReplacementNutrient Solution Ph ControlPhosphorus Deficiency TolerancePhosphorus FertilizationSoil Nitrogen ImmobilizationSolution Ph Control
Because it contains nitrogen fixing blue-green algae Anabaefa azota in its fronds, AzoZla grows on a nitrogen-free solution, doubles its mass in 3 or 5 days, and accumulates 30 or 40 kg of N/ha in 2 weeks. A calcium or phosphorus deficiency in the Azolla culture solution produces severe deterioration on growth. The optimum solution pH for Azolia is 5.5; a higher pH produces iron deficiency. Azolia is sensitive to a temperature higher than 310C (350 day which causes reddish-brown discoloration and reduces vigor...