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Paper Information

Journal:   WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)   Spring 2004 , Volume 8 , Number 1; Page(s) 105 To 105.
 
Paper: 

EVALUATING IRON OXIDE IMPREGNATED PAPER STRIPS (PI) USED IN DETERMINING AVAILABLE PHOSPHORUS OF SOME SOILS IN HAMADAN PROVINCE

 
 
Author(s):  GHANEI A.H., HOSSEINPUR A.R.
 
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Abstract: 
Iron oxide-coated strips (P__i) can serve as a sink to continuously remove P from solution. In this way, probably, P extraction is analogous to P absorption by plant root. The objective of this study was to evaluate the iron oxide-coated paper strips to estimate the availability of soil P of corn (Zea mays) grown under greenhouse conditions in some soils of Hamadan Province. Sixteen soil samples with different physico-chemical properties were examined for available P by Olsen, Colwell, Mehlich1, 0.01 M CaCl2, AB-DTPA, 0.1 M HCl methods and two (P__il, P__i2) P__i methods. Furthermore, the effects of two P levels ( 0 and 250 mg P Kg^-1 soil) on the plant responses (P uptake, P concentration, and relative yield) were studied in the greenhouse experiment using 12 soil samples. The results showed that the amount of extractable P decreased in the order: 0.01 M Cacl2 < P__i2 < AB-DTPA < P__il < Olsen
 
Keyword(s): PHOSPHORUS, EXTRACTANT, CORN
 
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