Plant and Soil

, Volume 334, Issue 1, pp 391–407

Fresh and residual phosphorus uptake by ryegrass from soils with different fertilization histories

Authors

    • Institute of Plant, Animal and Agroecosystem Sciences, Group of Plant Nutrition, Research Station EschikonETH Zurich
  • Hans U. Tagmann
    • Institute of Plant, Animal and Agroecosystem Sciences, Group of Plant Nutrition, Research Station EschikonETH Zurich
  • Monika Langmeier
    • Institute of Plant, Animal and Agroecosystem Sciences, Group of Plant Nutrition, Research Station EschikonETH Zurich
  • David Dubois
    • Research Station Agroscope Reckenholz-Tänikon (ART)
  • Paul Mäder
    • Research Institute of Organic Agriculture (FiBL)
  • Emmanuel Frossard
    • Institute of Plant, Animal and Agroecosystem Sciences, Group of Plant Nutrition, Research Station EschikonETH Zurich
Regular Article

DOI: 10.1007/s11104-010-0390-6

Cite this article as:
Oberson, A., Tagmann, H.U., Langmeier, M. et al. Plant Soil (2010) 334: 391. doi:10.1007/s11104-010-0390-6

Abstract

Organic farming largely depends on animal manure as a source of phosphorus (P) and the recycling of animal manure globally is becoming increasingly important. In a pot experiment, using radioactive P labeling techniques, we studied ryegrass uptake of P applied with animal manure and water soluble mineral fertilizer to soils that had been cropped for 22 years according to organic or conventional farming practices. The soils differed in P status and microbial activity. Labeling soil-available P also allowed assessing the uptake from residual P that remained in the soils because of their different fertilization histories. On each soil, recovery of fresh manure P in four harvests of ryegrass shoots was lower than recovery of mineral P. It ranged from 24% to 35% for manure P and from 37% to 43% for mineral P. Recovery of fresh manure P was affected by soil-available P contents. It was lower at a higher available P in a conventional soil. Different levels in microbial activity among soils were of lesser importance for the recovery of fresh manure P in plants. The recovery of residual P ranged from 9% to 15%. Residual P contained in organic cropped soils contributed less to P nutrition of ryegrass than the residual P contained in conventional cropped soils, probably due to their lower residual P contents being composed of stable P forms. The indirect isotope dilution technique is useful in assessing manure P uptake by plants, but attention must be given to added P interactions, i.e., the potential impact of organic amendments on P uptake from non-labeled soil and residual P.

Keywords

PhosphorusAnimal manureResidual phosphorusIsotope techniquesPhosphorus uptakeOrganic and conventional farming

Copyright information

© Springer Science+Business Media B.V. 2010