Effect of Sesbania, Azolla and rice straw incorporation on the kinetics of NH4, K, Fe, Mn, Zn and P in some flooded rice soils

@article{Nagarajah1989EffectOS,
  title={Effect of Sesbania, Azolla and rice straw incorporation on the kinetics of NH4, K, Fe, Mn, Zn and P in some flooded rice soils},
  author={Sellappah Nagarajah and H. U. Neue and Ma. Carmelita R. Alberto},
  journal={Plant and Soil},
  year={1989},
  volume={116},
  pages={37-48}
}
In a greenhouse study, with and without rice plants, of five flooded Philippine rice soils whose organic C (OC) content varied from 0.5 to 3.6%, incorporation ofSesbania rostrata, Azolla microphylla and rice straw affected the kinetics of soil solution NH4+−N, K+, Fe2+, Mn2+, Zn2+, and P. Sesbania and Azolla increased NH4+−N concentration above the control treatment, whereas rice straw depressed it. In all soils Azolla released less NH4+−N than Sesbania. The apparent net N release depended on… CONTINUE READING

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