Enhancement of iron availability by some organic materials

Parsa, A.A. and Wallace, A. and Martin, J.P. (1979) Enhancement of iron availability by some organic materials. Journal of Agricultural Science, 93 (1). pp. 115-120.

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In a preliminary laboratory experiment in Iran, not reported here, 5 out of 30 plant materials incorporated into a highly calcareous soil had a positive effect on increasing the DTPA- (diethylenetriaminepentaacetic acid)-extractable Fe and all except one significantly increased the vegetative growth of sorghum. The plant materials included Lawsonia inermis L., Malva silvestris L., Zyzyphus nummularia Wak. and Lavandula carnopifolia L. A glasshouse study was repeated with two California soils pretreated with 0·5% Fe2O3 to determine if these organic materials have practical value in making Fe available to plants. A calcareous, Fe-deficient Hacienda (fine-loamy, mixed, thermic aquic natrargid) and a non-calcareous Yolo (fine-silty, mixed, non-acid, thermic typic xerothents). The previously mentioned organic materials and Laminaria saccharina L. (Lamour) were incorporated into the soils at two rates, 15000 and 20000μg/g, as air dry and in ash form. An adequate supply of major and micronutrients other than Fe was ensured. Other treatments included 5 μg Fe/g as FeSO4, Fe-138 chelate and control. All of the plant materials with the exception of L. carnopifolia significantly increased dry-matter yield and Fe, Zn, Cu and Mn uptake by sorghum in the Hacienda soil. In the Yolo soil the above were not significant. Thin-layer chromatography of the extracts of the plant materials revealed the presence of significant quantities of phenolic substances

Item Type: Article
Author Affiliation: Department of Soil Science, Pahlavi University, Shiraz, Iran
Subjects: Agricultural Engineering
Divisions: Other Crops
Depositing User: Ms K Syamalamba
Date Deposited: 30 Jan 2013 05:36
Last Modified: 30 Jan 2013 05:36
Official URL: http://dx.doi.org/10.1017/S0021859600086196
URI: http://eprints.icrisat.ac.in/id/eprint/9443

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