Responsiveness of wheat (Triticum aestivum) to liquid and granular phosphorus fertilisers in southern Australian soils

被引:62
作者
McBeath, TM
Armstrong, RD
Lombi, E
McLaughlin, MJ
Holloway, RE
机构
[1] Dept Primary Ind, Horsham, Vic 3400, Australia
[2] CSIRO Land & Water, Glen Osmond, SA 5064, Australia
[3] S Australian Res & Dev Inst, Minnipa Agr Ctr, Minnipa, SA 5654, Australia
来源
AUSTRALIAN JOURNAL OF SOIL RESEARCH | 2005年 / 43卷 / 02期
关键词
liquid fertilisers; fluid fertilisers; phosphorus; alkaline soils; wheat;
D O I
10.1071/SR04066
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Recent field trials on alkaline soils in southern Australia showed significant grain yield responses to liquid compared with traditional granular forms of P fertiliser. However the advantages of liquid over granular P forms of fertiliser has not been consistent on all soil types. In order to better predict the soil types on which liquid P fertilisers are likely to have potential, a glasshouse trial was conducted to compare the responsiveness of wheat to both liquid and granular forms of P on a wide range of Australian soils. A granular P fertiliser ( triple superphosphate) and 2 liquid fertilisers ( phosphoric acid and ammonium polyphosphate) were compared at a rate equivalent to 12 kg P/ha in 29 soils representing many of the soil types used for grain production in Victoria and South Australia. Wheat biomass was enhanced by P application in 86% of the soils tested. In 62% of the P-responsive soils, wheat dry matter was significantly greater when liquid P fertilisers were used compared with the granular form. Chemical analysis of the soils tested showed that the better performance of liquid P forms was not correlated to total P concentration in soil, P buffer capacity, or P availability as measured by Colwell-P. However, there was a significant positive relationship between calcium carbonate (CaCO3) content of soil and wheat responsiveness to liquid P fertiliser.
引用
收藏
页码:203 / 212
页数:10
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