A COMPARISON OF 5 SOIL-PHOSPHORUS TESTS FOR 5 CROP SPECIES FOR SOIL PREVIOUSLY FERTILIZED WITH SUPERPHOSPHATE AND ROCK PHOSPHATE

被引:12
作者
BOLLAND, MDA
KUMAR, V
GILKES, RJ
机构
[1] Western Australian Department of Agriculture, South Perth, 6151, Western Australia
[2] Soil Science and Plant Nutrition, School of Agriculture, University of Western Australia, Nedlands, 6009, Western Australia
来源
FERTILIZER RESEARCH | 1994年 / 37卷 / 02期
关键词
P(I); COLWELL; BRAY-1; CALCIUM ACETATE LACTATE (CAL); AND TRUOG SOIL TEST REAGENTS; TRIPLE SUPERPHOSPHATE; NORTH-CAROLINA ROCK PHOSPHATE; QUEENSLAND ROCK PHOSPHATE; AND CALCIPHOS ROCK PHOSPHATE; LUPINS; (LUPINUS-ANGUSTIFOLIUS); BARLEY; (HORDEUM-VULGARE); OATS(AVENA-SATIVA); TRITICALE (X TRITICOSECALE) AND RAPESEED (BRASSICA-NAPUS) PLANT SPECIES;
D O I
10.1007/BF00748553
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
The P(i), Colwell, Bray 1, calcium acetate lactate (CAL) and Truog phosphorus (P) soil test reagents were assessed in two field experiments on lateritic soil's in Western Australia that had been fertilized four years previously (1984) with triple superphosphate, North Carolina rock phosphate, Queensland rock phosphate, and in one experiment, Calciphos. Soil samples to measure soil P test were collected February 1987. Soil P test was related to seed (grain) yields measured later in 1987. Different crop species were grown on different sections of the same plot at each site. The species were lupins (Lupinus angustifolius), barley (Hordeum vulgare) and oats (Avena sativa) at one site, and lupins, oats, triticale (x Triticosecale) and rapeseed (Brassica napus) at the other site. For each reagent, the soil P test calibration, which is the relationship between yield, expressed as a percentage of the maximum yield, and soil P test, generally differed for different plant species and for different fertilizer types. Variations in soil P test required to produce half the maximum yield of each species at each site was least for the CAL reagent followed by the Colwell reagent.
引用
收藏
页码:125 / 132
页数:8
相关论文
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