Changes in P bioavailability induced by the application of liquid and powder sources of P, N and Zn fertilizers in alkaline soils

被引:44
作者
Bertrand, I
McLaughlin, M
Holloway, R
Armstrong, R
McBeath, T
机构
[1] INRA, Unite Agron, Ctr Rech Agron, F-51686 Reims 2, France
[2] CSIRO, Land & Water, Glen Osmond, SA 5064, Australia
[3] Univ Adelaide, Sch Earth & Environm Sci, Glen Osmond, SA 5064, Australia
[4] Minnipa Agr Ctr, S Australian Res & Dev Inst, Minnipa, SA 5654, Australia
[5] Victorian Inst Dryland Agr, Agr Victoria, Horsham, Vic 3400, Australia
关键词
alkaline soils; fertilizer efficiency; liquid; phosphorus; wheat;
D O I
10.1007/s10705-005-4404-3
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Alkaline and/or calcareous soils provide significant challenges for management of crop P nutrition, due to rapid fixation of P into sparingly soluble forms not readily accessible by plants. Three powder products, mono- and diammonium phosphate (MAP, DAP) and triple superphosphate (TSP), were compared to three liquid products, liquid MAP, ammonium polyphosphate (APP) and phosphoric acid (H3PO4), as sources of P for wheat grown in four alkaline soils (grey and red calcareous soils, a Vertosol and a Sodosol) sampled in Eyre Peninsula (South Australia), Wimmera and Central Mallee areas (Victoria) of southern Australia. Soils were labelled with P-32 and the labile P pool and P derived from the fertilizer (P-dff) determined. Residual value of the fertilizers was determined after a 4 month wet/dry incubation. Liquid formulations outperformed powder products in the grey calcareous soil and in the Vertosol, as measured by wheat growth, P uptake, plant-labile P pools and P-dff. These increases in P efficiency were not related to differential acidification of the bulk soils. In the most calcareous soil, large proportions of the added DAP, MAP or TSP were rapidly converted (fixed) into non plant-labile pools, likely through precipitation of Ca-P compounds not accessible to plant roots, while conversely, liquid formulations minimized P fixation. Our results suggest that one of the most likely hypotheses to explain difference in efficiencies between powder and liquid forms of fertilizers was that in relatively dry conditions and in high P fixing soils, the dissolution and diffusion of P outwards from the powder is limited. This induces localized areas in the soil with high concentrations of P leading to precipitation of insoluble Ca-P solid phases. In the field, where powder fertilizers are applied as granules rather than as fine powder, differences between the two forms of fertilizer are likely to be larger. The residual value of liquid formulations was equal or superior to powder products. Liquid fertilizers injected into soil may therefore have potential to improve P nutrition in a wide range of calcareous soils under dryland agriculture throughout the world. Field trials have actually been performed in southern Australia to confirm this important issue.
引用
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页码:27 / 40
页数:14
相关论文
共 44 条
[1]   EFFECT OF PYROPHOSPHATE ON ORTHO-PHOSPHATE REACTIONS IN CALCAREOUS SOILS [J].
AMER, F ;
MOSTAFA, HE .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1981, 45 (05) :842-847
[2]  
AMRANI M, 1999, NUT CYCLING AGROECOS, V59, P19
[3]   RESPONSE OF PLANTS TO PHOSPHATE CONCENTRATION IN SOLUTION CULTURE .I. GROWTH AND PHOSPHORUS CONTENT [J].
ASHER, CJ ;
LONERAGA.JF .
SOIL SCIENCE, 1967, 103 (04) :225-&
[4]   Chemical characteristics of phosphorus in alkaline soils from southern Australia [J].
Bertrand, I ;
Holloway, RE ;
Armstrong, RD ;
McLaughlin, MJ .
AUSTRALIAN JOURNAL OF SOIL RESEARCH, 2003, 41 (01) :61-76
[5]   MEASUREMENT OF ISOTOPIC EXCHANGEABLE SOIL-PHOSPHORUS AND INTERRELATIONSHIP AMONG PARAMETERS OF QUANTITY, INTENSITY, AND CAPACITY FACTORS [J].
DALAL, RC ;
HALLSWORTH, EG .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1977, 41 (01) :81-86
[6]   Development of a soil-plant phosphorus simulation model for calcareous and weathered tropical soils [J].
Daroub, SH ;
Gerakis, A ;
Ritchie, JT ;
Friesen, DK ;
Ryan, J .
AGRICULTURAL SYSTEMS, 2003, 76 (03) :1157-1181
[7]  
DEAN LA, 1947, SOIL SCI SOC AM J, V12, P107
[8]  
Di HJ, 1997, BIOL FERT SOILS, V24, P1, DOI 10.1007/s003740050200
[9]  
DONALD C. M., 1964, J AUSTRALIAN INST AGR SCI, V30, P75
[10]  
FARDEAU JC, 1985, CR ACAD SCI III-VIE, V300, P371