COMPARISON OF DTPA AND RESIN EXTRACTABLE SOIL ZN TO PLANT ZN UPTAKE

被引:7
作者
HAMILTON, MA
WESTERMANN, DT
机构
[1] USDA-ARS Soil and Water Management Research Center, Kimberly, Idaho
关键词
D O I
10.1080/00103629109368435
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Extraction of soil zinc with routine chemical extractants does not always reflect differences in Zn availability as detected by plant uptake. This study was undertaken to explore and compare the use of an ion exchange resin and diethylenetriaminepentaacetic acid (DTPA) for extracting soil Zn as related to plant Zn uptake. Beans were grown in 1989 following differential cropping with corn and beans or fallow in 1988 on a Portneuf silt loam near Kimberly, Idaho. Two Zn fertilize treatments were imposed across previous cropping treatments. A batch method for determining resin extractable soil Zn was established. Both plant Zn concentration and Zn uptake by beans in 1989 were significantly higher in Zn fertilized than unfertilized treatments regardless of previous crop; and higher in plots previously cropped with corn than beans or fallow, regardless of Zn treatment. DTPA and resin extractable soil Zn were significantly higher in Zn fertilized plots compared to unfertilized plots but did not differ between previous cropping treatments. Resin and DTPA extractable soil Zn concentrations were positively correlated. Resin extracted soil Zn correlated better with plant Zn concentration and Zn uptake throughout the growing season than DTPA extracted soil Zn, particularly in plots that had been fallowed or previously cropped with corn. Resin may be extracting labile soil Zn not extracted with DTPA and, therefore, be better simulating plant uptake. Both extraction methods correlated better with Zn uptake when evaluated within cropping treatments, emphasizing the need to consider previous crop when calibrating soil tests.
引用
收藏
页码:517 / 528
页数:12
相关论文
共 13 条
[1]  
AMER F., 1955, PLANT AND SOIL, V6, P391, DOI 10.1007/BF01343648
[2]  
BAUER A., 1965, SOIL SCI SOC AMER PROC, V29, P413
[4]   ION-EXCHANGE RESIN BAG METHOD FOR ASSESSING FOREST SOIL-NITROGEN AVAILABILITY [J].
BINKLEY, D ;
MATSON, P .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1983, 47 (05) :1050-1052
[5]  
HISLP J, 1966, SOIL SCI, V105, P8
[6]   EFFECT OF CORN, SUGAR-BEETS, AND FALLOW ON ZINC AVAILABILITY TO SUBSEQUENT CROPS [J].
LEGGETT, GE ;
WESTERMANN, DT .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1986, 50 (04) :963-968
[7]   DEVELOPMENT OF A DTPA SOIL TEST FOR ZINC, IRON, MANGANESE, AND COPPER [J].
LINDSAY, WL ;
NORVELL, WA .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1978, 42 (03) :421-428
[8]  
MOSER US, 1959, PLANT SOIL, V10, P356
[9]  
SALOMON MILTON, 1957, SOIL SCI SOC AMER PROC, V21, P222