2018
DOI: 10.18174/460816
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Veeljarige fosfaatveldproeven op gras- en bouwland : syntheserapport

Abstract: Measurements of phosphate in the soil moisture at different depths show that in grassland the soil layer 0-5 cm reacted to differences in phosphate surpluses in clay and peat soil but not in sandy soil. Higher surpluses led to higher concentrations. On arable land, an effect of imposed phosphate treatments was only observed for one of the clay soils; higher phosphate surpluses led to higher concentrations in the soil at 35 cm depth. In the case of another clay soil and a sandy soil, no effects were found at th… Show more

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Cited by 6 publications
(36 citation statements)
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(2 reference statements)
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“…There have, however, been fluctuations between the years. These fluctuations were caused by the different fields over all the years, although there may also be differences in measured levels within a single field between years (Ehlert et al, 2018). The organic matter content of maize land is lower than that of grassland.…”
Section: Organic Matter In Agricultural Soilsmentioning
confidence: 98%
See 1 more Smart Citation
“…There have, however, been fluctuations between the years. These fluctuations were caused by the different fields over all the years, although there may also be differences in measured levels within a single field between years (Ehlert et al, 2018). The organic matter content of maize land is lower than that of grassland.…”
Section: Organic Matter In Agricultural Soilsmentioning
confidence: 98%
“…Figure 9 is derived from the multi-year phosphate test fields of Wageningen UR (Ehlert et al, 2018).…”
Section: Table 10mentioning
confidence: 99%
“…Voor P is geselecteerd op fosfaattoestand, waarbij de meest gehanteerde selectie P-midden uitgaat van de fosfaattoestanden voldoende en ruim voldoende (Pw tussen 20 en 45). Hogere P-toestanden en hoge P-bemesting kunnen leiden tot luxe consumptie van P en hogere P-gehalten (Ehlert et al, 2009, Ehlert et al, 2018. Het effect hiervan is in het voorliggende rapport niet gekwantificeerd, en de gegeven P-gehalten zijn passend bij het bemestingsadvies en fosfaattoestanden voldoende en ruim voldoende.…”
Section: 5unclassified
“…Dat geeft aan dat alleen metingen op praktijkpercelen niet betrouwbaar genoeg zijn om veranderingen in organische stofgehalten betrouwbaar te kunnen aantonen. Bij grotere datareeksen, zoals bepaald op proefvelden, kan met statistische methoden een betrouwbare verandering worden aangetoond (Ehlert et al, 2018).…”
Section: Figuurunclassified
“…Dat betekent dat niet elk jaar een volledige verificatie mogelijk is. Bovendien wordt de verificatie lastig door de variatie in organische stofgehalten tussen jaren (zoals gevonden is op proefvelden,Ehlert et al, 2018). een reductie van de footprint met ongeveer 24 gram CO 2 -eq per kg melk.…”
unclassified