Mobility and Lability of Phosphorus from Granular and Fluid Monoammonium Phosphate Differs in a Calcareous Soil

Lombi, Enzo; McLaughlin, M. J.; Johnston, C. D.; Armstrong, Ray; Holloway, Robert E.

doi:10.2136/sssaj2004.0682

Cited by 28 publications

(35 citation statements)

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“…In calcareous soils P was shown to react with Ca forming minerals such as dicalcium phosphate dihydrate or octocalcium phosphate (Freeman andRowell 1981, Tunesi et al 1999). Likewise, in these soils the low efficiency of P application is more important when the product is applied in a granular format (Lombi et al 2004), which was also our case.…”

Section: Resultssupporting

confidence: 70%

Fertilizer application (P, K, S, Ca and Mg) on pasture in calcareous dehesas: effects on herbage yield, botanical composition and nutritive value

et al. 2014

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The objective of the present study was to evaluate the effect of P, Ca, S, and/or K and/or Mg application at different rates on the botanical composition, herbage yield and its nutritive value in dehesas developed on calcareous soils. In two growing seasons, 2009/10 and 2010/11, five surface-broadcast fertiliser treatments were applied once in autumn. Two grazing periods were simulated by cutting the pasture in mid-spring and late-spring. Treatment K1, with the highest amount of Ca and without K in its composition, provided higher crude protein values in the herbage than controls in 2009/10. When the effect of each nutrient was analysed separately, a strong and highly positive response of Mg application on herbage production was recorded. A surface application of fertilisers containing 25 kg Mg/ha in autumn could increase herbage yield by 40% under the studied conditions. However, Mg was not applied alone, and thus this increase could be due to an effect of Mg by itself or to a synergistic effect between Mg and other nutrients applied. The application of Ca, P and Mg may also favour the production of high-quality forage by yielding a greater cover of legumes and digestible protein.

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Section: Resultssupporting

confidence: 70%

Fertilizer application (P, K, S, Ca and Mg) on pasture in calcareous dehesas: effects on herbage yield, botanical composition and nutritive value

et al. 2014

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“…The impact of CaCO 3 on P availability depends on CaCO 3 surface area, soil texture, soil organic matter and the method and form of P application (Soper and El-Bagouri 1964;Fixen and Ludwick 1982;Lombi et al 2004). No simple quantitative relationship exists between soil CaCO 3 concentration and P availability.…”

Section: Description Of Modelmentioning

confidence: 99%

SimPLE.ca: Simulator of productivity loss due to erosion for Canada

Bremer¹,

Greer²,

Black³

et al. 2008

Can. J. Soil. Sci.

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:Simulator of productivity loss due to erosion for Canada. Can. J. Soil Sci. 88: 365Á376. Robust and practical estimates of the impact of soil erosion on crop productivity are essential for developing and implementing appropriate solutions for soil erosion on agricultural land. The objective of this study was to develop a simple model which captured the most important relationships between topsoil erosion and productivity loss for major agricultural regions of Canada. The model was developed for spring wheat (Triticum aestivum L.) and corn (Zea mays L.). Using annual time steps, maximum crop yields were reduced by soil erosion due to losses in available water-holding capacity, N-mineralization potential and available P. Using minimal input data, the model accounted for 56% of the variation in relative yields (fraction of non-eroded controls) determined in field studies using desurfacing or comparison plot methods.Key words: Available N and P, model, nutrients, productivity loss, simulator, soil erosion, soil properties, yield loss Bremer, E., Greer, K. J., Black, M., Townley-Smith, L., Malhi, S. S., Izaurralde, R. C. et Larney, F. J. 2008. SimPLE.ca: un logiciel simulant la diminution de rendement re´sultant de l'e´rosion au Canada. Can. J. Soil Sci. 88: 365Á376. On a absolument besoin d'estimations robustes et pratiques de l'incidence que l'e´rosion du sol a sur le rendement si l'on veut trouver des solutions convenables a`ce proble`me sur les terres agricoles et les mettre en aeuvre. L'e´tude devait conduire al 'e´laboration d'un mode`le simple qui saisirait les liens les plus importants entre l'e´rosion de la couche superficielle de sol et la diminution du rendement dans les principales zones agricoles du Canada. Le mode`le a e´te´e´labore´pour le ble´de printemps (Triticum aestivum L.) et le maı¨s (Zea mays L.). En recourant a`des intervalles de temps annuels, on se rend compte que l'e´rosion du sol re´duit le rendement maximal des cultures en abaissant la capacite´de re´tention de l'eau existante, le potentiel de mine´ralisation de l'azote et la quantite´de P disponible. Avec la saisie d'un minimum de donne´es, le mode`le re´ussit a`expliquer 56% de la variation du rendement relatif (partie des sites te´moins non e´rode´s) e´tablie lors des e´tudes sur le terrain par des techniques d'enle`vement de la surface et de comparaison des parcelles.

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“…Além destes, estudos sofisticados realizados por meio de incubação em placa de petri, também possibilitaram a avaliação da difusão e labilidade do P no solo através do uso da técnica isotópica (LOMBI et al, 2004a;2004b;.…”

Section: Uso De Isótopos Radioativos Do P Como Traçadores Em Estudos unclassified

“…Para avaliar a difusão do P a partir dos grânulos de fertilizantes foi realizado um experimento de incubação em placas de petri com dimensões de 86 mm de diâmetro por 10 mm de altura, baseando-se na metodologia descrita por Lombi et al (2004a;2004b) …”

Section: Montagem Das Placas De Petriunclassified

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Influência do silício sobre a difusão do fósforo no solo e na eficiência agronômica de fertilizantes fosfatados granulados

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Mobility and Lability of Phosphorus from Granular and Fluid Monoammonium Phosphate Differs in a Calcareous Soil

Cited by 28 publications

References 0 publications

Fertilizer application (P, K, S, Ca and Mg) on pasture in calcareous dehesas: effects on herbage yield, botanical composition and nutritive value

Fertilizer application (P, K, S, Ca and Mg) on pasture in calcareous dehesas: effects on herbage yield, botanical composition and nutritive value

SimPLE.ca: Simulator of productivity loss due to erosion for Canada

Influência do silício sobre a difusão do fósforo no solo e na eficiência agronômica de fertilizantes fosfatados granulados

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