|Title: ||Relationship between phosphorus in organic growing media and its uptake by ryegrass|
|Citation: ||Communications in Soil Science and Plant Analysis, 41(1) : 98-107|
|Publisher: ||Taylor & Francis|
|Journal: ||Communications in Soil Science and Plant Analysis|
|Issue Date: ||2010 |
|Additional Links: ||http://dx.doi.org/10.1080/00103620903360304|
|Abstract: ||The supply of nutrients to plants from organic growing media depends on
mineralization as the addition of inorganic nutrients is forbidden in certified organic
systems. The objective of this study was to determine the relationship between total
phosphorus (P), extractable (Olsen’s) P, organic P, and biomass P in growing
media and uptake of P by ryegrass. Three proprietary products were used alone and
combined in 1:2 and 2:1 proportions to give nine growing media. Perennial ryegrass
(Lolium perenne L. cv. ‘Choice’) was irrigated with a modified Hoagland’s solution
minus P, and the shoots were harvested after 28, 56, and 84 days. There was no
significant correlation between the amounts of the different forms of P in the
growing media and ryegrass dry weight or P concentration in harvested grass.
However, total ryegrass P uptake was significantly positively correlated with initial total P and organic P in the growing media.|
|Keywords: ||Lolium perenne L.|
Organic growing media
|Appears in Collections: ||Plant and Environmental Research Group|
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