Zobrazeno 1 - 10
of 69
pro vyhledávání: '"G. P. Sparling"'
Autor:
EJ Chibnall, Jack Pronger, S. Rutledge, D.I. Campbell, Aaron M. Wall, Louis A. Schipper, G. P. Sparling
Publikováno v:
New Zealand Journal of Agricultural Research. 59:32-49
Dissolved organic carbon (DOC) flux on a conventional New Zealand dairy farm was measured for 1 year to assess the contribution from DOC to the total farm C budget. Soil solution was collected using ceramic cups at 60 cm depth. Soil drainage was calc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0d1ad73c224ec30f126205b410a10b7
https://doi.org/10.1080/00288233.2015.1120222
https://doi.org/10.1080/00288233.2015.1120222
Publikováno v:
New Zealand Journal of Agricultural Research. 56:37-48
The effectiveness of multiple small doses of the nitrification inhibitor dicyandiamide (DCD) to decrease denitrification under warm moist conditions was tested in a 1-year field trial on a grazed dairy pasture. DCD was applied approximately every 4 w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c504963e832310a7966631deb9fde1ed
https://doi.org/10.1080/00288233.2012.736389
https://doi.org/10.1080/00288233.2012.736389
Publikováno v:
Agriculture, Ecosystems & Environment. 144:95-101
In New Zealand, phosphate (P) fertilisers used in agriculture are the main sources of the potentially toxic elements cadmium (Cd) and uranium (U), which occur as unwanted contaminants. New Zealand is developing draft soil guideline values (SGV) for m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6528c1ecbe0d728889d830c77febb70
https://doi.org/10.1016/j.agee.2011.08.002
https://doi.org/10.1016/j.agee.2011.08.002
Autor:
G. P. Sparling, Louis A. Schipper
Publikováno v:
Biogeochemistry. 104:49-58
Rates of organic carbon accumulation and changes in C:N ratio are reported for 10 New Zealand soils converted to pastures from scrub. The data were derived from archive papers originally published in 1964, but which did not report on changes in the C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97f65bb6ac160de9d7363073784a37a1
https://doi.org/10.1007/s10533-009-9367-z
https://doi.org/10.1007/s10533-009-9367-z
Autor:
Hongjie Di, Allan Hewitt, Gregor W. Yeates, Jackie Aislabie, G. P. Sparling, Louis A. Schipper, Janine Ryburn, Maja Vojvodic-Vukovic
Publikováno v:
Biology and Fertility of Soils. 44:633-640
The chemical, physical and biological conditions of a New Zealand Gley Soil was examined on matched sites under long-term permanent pasture or used to grow blackcurrants (Ribes nigrum) for 2, 8, 10 or 20 years. The chemical and physical conditions of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8051e6b34b0ec21cfe5a8c28b7aadf9b
https://doi.org/10.1007/s00374-007-0247-1
https://doi.org/10.1007/s00374-007-0247-1
Publikováno v:
Soil Use and Management. 20:281-286
Net accumulation of organic nitrogen in soil is constrained by the amount of organic matter and its minimum C:N ratio. Our objective was to estimate the potential for New Zealand soils to continue accumulating nitrogen within the soil organic pool. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c60717920a4adf8a1c40aee8d5895755
https://doi.org/10.1111/j.1475-2743.2004.tb00369.x
https://doi.org/10.1111/j.1475-2743.2004.tb00369.x
Publikováno v:
Agriculture, Ecosystems & Environment. 104:523-534
New Zealand operated two soil quality-monitoring programmes between 1995 and 2001 to test methods and provide data about sustainable land use for state of the environment reporting. The objective of this paper is to report on the strengths and weakne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad26362f68c99250ef2916951b8e24bf
https://doi.org/10.1016/j.agee.2004.01.021
https://doi.org/10.1016/j.agee.2004.01.021
Publikováno v:
Agriculture, Ecosystems & Environment. 104:535-544
Schemes to monitor soil quality must be associated with quality criteria that allow for an objective assessment of what the measured values signify in relation to soil quality. The derivation of an interpretative framework for a broad-scale New Zeala
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5079edf8678c3b6106b3d7fadcf66a8f
https://doi.org/10.1016/j.agee.2004.01.020
https://doi.org/10.1016/j.agee.2004.01.020
Autor:
G. P. Sparling, Louis A. Schipper
Publikováno v:
Agriculture, Ecosystems & Environment. 104:545-552
Interpretation of national-scale surveys is needed to determine long term impacts of land use on soil quality. We report the findings of a survey of soil quality in New Zealand conducted 1995–2001. The survey covered 511 sites representative of 98%
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e5c9c186454429a106d5ad004a555fb
https://doi.org/10.1016/j.agee.2003.11.014
https://doi.org/10.1016/j.agee.2003.11.014
Publikováno v:
New Zealand Journal of Agricultural Research. 47:155-166
To establish long‐term trends in soil fertility in New Zealand pasture lands, data for Olsen phosphate (Olsen P), pH, and QuickTest (QT) calcium (Ca), magnesium (Mg), and potassium (K) from 246 000 soil samples submitted to a commercial soil sampli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::863653b7c05ae06e70020cb4e7357725
https://doi.org/10.1080/00288233.2004.9513583
https://doi.org/10.1080/00288233.2004.9513583