References
- Azaizeh , H. A. , Marschner , H. , Romheld , V. and Wittenmayer , L. 1995 . Effects of vesicular–arbuscular mycorrhizal fungus and other soil microorganisms on growth, mineral nutrient acquisition and root exudation of soil‐grown maize plants . Mycorrhiza , 5 : 5321 – 5327 .
- Baudoin , E. , Benizri , E. and Guckert , A. 2003 . Impact of artificial root exudates on the bacterial community structure in bulk soil and maize rhizosphere . Soil Biology and Biochemistry , 35 : 1183 – 1192 .
- Cox , M. S. 2001 . The Lancaster soil test method as an alternative to the Mehlich 3 soil test method . Plant and Soil , 166 ( 7 ) : 484 – 489 .
- Golterman , H. L. 1998 . Relections on fractionation and bioavailability of sediment bound phosphate . Archive Hydrobiology , 30 : 1 – 4 .
- Holford , I. C.R. 1980 . Greenhouse evaluation of four phosphorus soil tests in relation to phosphate buffering and labile phosphate in soil . Soil Science Society of America Journal , 44 : 555 – 559 .
- Mehlich , A. 1984 . Mehlich 3 soil test extractant; A modification of the Mehlich 2 extractant . Communications in Soil Science and Plant Analysis , 15 : 1409 – 1416 .
- Mehta , S. , Sharma , S. and Sindhan , G. S. 1992 . Analysis of root exudates of cowpea and their influence on the growth of Rhizoctonia solani . Indian Journal of Mycology and Plant Pathology , 22 : 227 – 231 .
- Nelson , W. L. , Mehlich , A. and Winters , E. 1953 . “ The development, evaluation, and use of soil tests phosphorus availability ” . In Soil and Fertilizer Phosphorus in Crop Nutrition Edited by: Pierre , W. H. and Norman , A. G. 153 – 188 . New York : Academic Press .
- Olsen , S. R. , Cole , C. V. , Watanabe , F. S. and Dean , L. A. 1954 . Estimation of Available Phosphorus in Soils by Extraction with Sodium Bicarbonate 1 – 19 . Washington D.C., , U.S. : Government Printing Office . USDA circular no. 939
- Rengel , Z. 1997 . Root exudation and microflora populations in rhizosphere of crop genotypes differing in tolerance to micronutrient deficiency . Plant and Soil , 196 : 255 – 260 .
- Rengel , Z. 2002 . Genetic control of root exudation . Plant and Soil , 245 : 59 – 70 .
- Ryan , P. R. , Skerrett , M. , Findlay , G. P. , Delhaize , E. and Tyreman , S. D. 1997 . Aluminum activates and anion channel in the apical cells of wheat roots . Proc. Natl. Acad. Sci. , 94 : 6547 – 6552 .
- Sharpley , A. N. 1993 . An innovative approach to estimate bioavailable phosphorus in agricultural runoff by Fe oxide–impregnated paper . Journal of Environmental Quality , 22 : 597 – 601 .
- Shenker , M. , Hadar , Y. and Chen , Y. 1999 . Kinetics of iron complexing and metal exchange in solutions by Rhizoferrin, a fungal siderophore . Soil Science Society of America Journal , 63 : 1681 – 1687 .
- Subbarao , G. V. , Ae , N. and Otani , T. 1997 . Genotypic variation in iron and aluminum‐phosphate solubilizing activity of pigeonpea root exudates under P deficient conditions . Soil Science and Plant Nutrition , 43 : 295 – 305 .
- Zheng , S. J. and Ma , J. F. 1998 . Continuous secretion of organic acids is related to aluminum resistance during relatively long‐term exposure to aluminum stress . Physiologia Plantarum , 103 : 209 – 214 .