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Determination of phosphorus status of wheat and barley crops using a rapid root bioassay
Author(s) -
Harrison A F,
Dighton J
Publication year - 1990
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740510204
Subject(s) - bioassay , phosphorus , hordeum vulgare , agronomy , poaceae , soil water , biology , nutrient , chemistry , ecology , organic chemistry
A root bioassay of soil P availability, based on the amount of 32 P‐labelled phosphorus taken up in 15 min from a solution in the laboratory, has been tested on seedlings of winter wheat (Triticum aestivum L) and spring barley (Hordeum vulgare L). The seedlings were taken in spring from six different fertiliser plots, selected to give an extreme range of P availability, from the Broadbalk and Hoosfield experiments at Rothamsted. The results showed a negative relationship between the rate of phosphorus uptake and (a) the phosphorus contents of plants, and (b) Olsen's bicarbonate extractable phosphorus of the soils. This pattern is consistent with the results previously obtained when determining the phosphorus status of trees and grasses. This rapid bioassay procedure may therefore be applicable to agricultural crops.