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Development of phosphatase and dehydrogenase activities in soils of annual cropland and permanent grassland in an organic farm

Ohm, M.; Paulsen, H.M.; Eichler-Löbermann, B. and Rahmann, G. (2013) Development of phosphatase and dehydrogenase activities in soils of annual cropland and permanent grassland in an organic farm. In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 123-124.

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Summary

The essential nature of Phosphorus (P) in plant growth and the finite amount of P resources have result in the question: what kind of management in farming systems can lead to P sufficiency in organic farming? The release of acid and alkaline phosphatases of plant and microbes promote the plant availability of soil P. The presented results show a significant higher enzyme activity at permanent grassland (PG) than at arable land with annual crops at an organic farm in Northern Germany. Therefore livestock systems with PG for grazing ruminants seem to have high potential to improve on-farm P-cycles via feed and manure flows even to annual cropland. These systems can profit from the nutrient transfer from PG to arable land through the use of manures. Enhance the soil-plant P cycle by better use of P sources with low availability from PG could be component of sufficiency P management in organic and also conventional production.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Agrovoc keywords:
Language
Value
URI
English
Enzyme activity
http://aims.fao.org/aos/agrovoc/c_2604
English
Grasslands
http://aims.fao.org/aos/agrovoc/c_3366
English
Phosphates
http://aims.fao.org/aos/agrovoc/c_35986
English
Nutrient management
http://aims.fao.org/aos/agrovoc/c_330697
English
Organic agriculture
http://aims.fao.org/aos/agrovoc/c_15911
Subjects: Crop husbandry > Production systems > Pasture and forage crops
Farming Systems > Farm nutrient management
Research affiliation: International Conferences > 2013: NJF Seminar 461 - Organic farming systems as a driver for change
ISSN:1653-2015
Deposited By: Sørensen, Peter
ID Code:24568
Deposited On:06 Nov 2013 21:47
Last Modified:06 Nov 2013 21:47
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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