Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Erik Sibbesen"'
Publikováno v:
Soil and Tillage Research. 54:91-100
Long-term field experiments are important for studies of the long-term effects of agricultural management practices. Unfortunately tillage caused dispersion of soil from plot to plot is a serious problem in such experiments if the plots are unconfine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf652b364a4347b47be325b98c0beb61
https://doi.org/10.1016/s0167-1987(00)00088-x
https://doi.org/10.1016/s0167-1987(00)00088-x
Publikováno v:
Plant and Soil. 203:37-46
The contribution of indigenous arbuscular mycorrhizal fungi (AMF) to growth and phosphorus (P) uptake by oilseed flax (Linum usitatissimum L.) was examined in two field experiments covering soil P levels from 20–86 mg kg-1 NaHCO3-extractable P. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00af28d4392b979b1a1090392b025cd2
https://doi.org/10.1023/a:1004362310788
https://doi.org/10.1023/a:1004362310788
Publikováno v:
University of Copenhagen
Sommer, S G, Sibbesen, E, Nielsen, T, Schjørring, J K & Olesen, J E 1996, ' A passive flux sampler for measuring ammonia volatilization from manure storage facilities ', Journal of Environmental Quality, vol. 25, pp. 241-247 .
Sommer, S G, Sibbesen, E, Nielsen, T, Schjørring, J K & Olesen, J E 1996, ' A passive flux sampler for measuring ammonia volatilization from manure storage facilities ', Journal of Environmental Quality, vol. 25, pp. 241-247 .
An integrated horizontal flux technique was tested for quantification of ammonia (NH{sub 3}) emission from manure storage. The method is based on a simple and inexpensive passive flux sampler consisting of two disconnectable glass tubes, coated on th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5289572dea29631220c25b666cd58767
https://doi.org/10.2134/jeq1996.00472425002500020006x
https://doi.org/10.2134/jeq1996.00472425002500020006x
Autor:
Erik Sibbesen, Gitte H. Rubæk
Publikováno v:
Biology and Fertility of Soils. 20:86-92
Inorganic and organic soil P (Pi, Po) fractions were followed monthly for 15 months in a 100-year-old, fertilization and crop-rotation experiment with the Rubaek-Sibbesen, macroporous resin method, the Olsen method, and the Hedley fractionation metho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24e9979ff7b4a1d8ba9c3c4a19d8c556
https://doi.org/10.1007/bf00307847
https://doi.org/10.1007/bf00307847
Autor:
Gitte H. Rubæk, Erik Sibbesen
Publikováno v:
Communications in Soil Science and Plant Analysis. 25:1671-1683
Information on the organically‐bound phosphorus (Po) in soil and particularly the labile Po, the part which is most accessible for mineralization, is scarce and contradictory partly because of a lack of suitable methods. A newly developed method fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::faadfd0b9ec439964d24798bb87bd56f
https://doi.org/10.1080/00103629409369143
https://doi.org/10.1080/00103629409369143
Autor:
Erik Sibbesen, Gitte H. Rubæk
Publikováno v:
Journal of Soil Science. 44:467-478
SUMMARY In order to develop a method for estimating labile, soil organic phosphorus (Po), macroporous anion-exchange and adsorbent (XAD) resins were tested for their ability to extract Po from a permanent pasture soil. Experimental variables included
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6998a3feef3109ef4b4183919ccf3ada
https://doi.org/10.1111/j.1365-2389.1993.tb00469.x
https://doi.org/10.1111/j.1365-2389.1993.tb00469.x
Autor:
Erik Sibbesen, Anne Margrethe Lind
Publikováno v:
Acta Agriculturae Scandinavica, Section B - Soil & Plant Science. 43:16-20
Concentrations of N2O in gas samples taken from dungheaps of cattle and pig manure were up to 100 times greater than the atmospheric concentration. The concentrations varied little with time but tended to increase with depth. The concentrations were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26808ba3ca34ba4d8e3e991f1f21d6be
https://doi.org/10.1080/09064719309410226
https://doi.org/10.1080/09064719309410226
Publikováno v:
Hansen, B S, Schjønning, P & Sibbesen, E 1999, ' Roughness indices for estimation of depression storage capacity of tilled soil surfaces ', Soil & Tillage Research, vol. 52, pp. 103-111 .
Aarhus University
Aarhus University
Information on the depression storage capacity (DSC) of soil surfaces is needed for modelling surface runoff and erosion. However, time-consuming measurements of the soil surface microrelief in a two-dimensional grid are necessary to obtain accurate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd9ea52f83362fd57f837d27ce8ebbcd
https://pure.au.dk/portal/da/publications/roughness-indices-for-estimation-of-depression-storage-capacity-of-tilled-soil-surfaces(96ba4130-cbcb-11db-8e26-000ea68e967b).html
https://pure.au.dk/portal/da/publications/roughness-indices-for-estimation-of-depression-storage-capacity-of-tilled-soil-surfaces(96ba4130-cbcb-11db-8e26-000ea68e967b).html
Publikováno v:
Oyedele, D J, Schjønning, P, Sibbesen, E & Debosz, K 1999, ' Aggregation and organic matter fractions of three Nigerian soils as affected by soil disturbance and incorporation of plant material ', Soil & Tillage Research, vol. 50, pp. 105-114 .
Aarhus University
Aarhus University
Soil management involving organic matter incorporation and reduced tillage intensity has often been reported to improve soil structure. However, the mechanisms and roles of soil organic matter (SOM) fractions in the process of soil structural stabili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73ac098936d817feda3a237076e47b60
https://pure.au.dk/portal/da/publications/aggregation-and-organic-matter-fractions-of-three-nigerian-soils-as-affected-by-soil-disturbance-and-incorporation-of-plant-material(049b1a30-cafa-11db-8e26-000ea68e967b).html
https://pure.au.dk/portal/da/publications/aggregation-and-organic-matter-fractions-of-three-nigerian-soils-as-affected-by-soil-disturbance-and-incorporation-of-plant-material(049b1a30-cafa-11db-8e26-000ea68e967b).html
Publikováno v:
Heckrath, G, Sibbesen, E & Govers, G 1998, Effect of tillage erosion on soil phosphorus status and potential phosphorus loss . in Practical and innovative measures for the control of agricultural phosphorus losses to water. Proceedings. OECD sponsored workshop . pp. 40-41, Effect of tillage erosion on soil phosphorus status and potential phosphorus loss, Antrim, Northern Ireland, United Kingdom, 18/12/2010 .
Aarhus University
Aarhus University
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::56521630423d4ceac8ee30478892281e
https://pure.au.dk/portal/da/publications/effect-of-tillage-erosion-on-soil-phosphorus-status-and-potential-phosphorus-loss(f69e20b0-d226-11db-8e26-000ea68e967b).html
https://pure.au.dk/portal/da/publications/effect-of-tillage-erosion-on-soil-phosphorus-status-and-potential-phosphorus-loss(f69e20b0-d226-11db-8e26-000ea68e967b).html