References
- Brown , J.C. 1979 . Role of calcium in micronutrient stress of plants . Commun. Soil Sci. Plant Anal. , 10 : 459 – 472 .
- Brown , J. C. 1979a . Differential use of Fe3+ ana Fe3+by oats . Agron. J. , 71 : 897 – 902 .
- Brown , J. C. and Ambler , J.E. 1973 . “Reductants released by roots of Fe‐deficient soybeans . Agron. J. , 65 : 311 – 314 .
- Brown , J.C. and Jones , W.E. 1976 . A technique to determine iron deficiency in plants . Soil Sex. Soc. Am. J. , 40 : 398 – 404 .
- Brown , J.C. and McDaniel , M.E. 1978 . Factors associated with differential response of oat cultivars to iron stress . Crop Sci. , 18 : 551 – 556 .
- Chaney , R.L. 1984 . Diagnostic practices to identify iron deficiency in higher plants . J. Plant Nutr. , 7 : 47 – 67 .
- Hewitt , B.Y. 1963 . “ Essential nutrient elements for plants ” . In Plant Physiology vol.III , New York
- Ivanov , P. 1964 . New acetate‐lactate method for determining soil phosphorus and potassium available to plants . Pochvozn. Agrochim. , 19 : 88 – 98 .
- Jones , J.B. Jr. 1967 . “ Interpretation of plant analysis for several agronomic crops ” . In Soil Testing and Plant Analysis, part II , Soil Sci. Soc. Arn. Spec. Publ. Ser. Naaison, WI
- Kannan , S. 1969 . Factors related to Fe absorption by enzymaticaily isolated leaf cells . Plant Physiol. , 44 : 1457 – 1460 .
- Katyal , J.C. and Sharma , B.D. 1980 . A new technique of plant analysis to resolve iron chlorosis . Plant Soil. , 55 : 105 – 119 .
- Loop , E.A. and Finck , A. 1984 . Total iron as a useful index of Fe‐status of crops . J. Plant Nutr. , 7 : 69 – 79 .
- Pierson , E.E. and Clark , R.B. 1984 . Ferrous iron determination in plant tissue . J. Plant Nutr. , 7 : 107 – 116 .
- Stoyanov , D. and Feneva , N. 1985 . Zinc fertilizing . Pochvozn. Agrochim. Rast. Zast. , 20 : 74 – 81 .
- Trierweiler , J.F. and Lindsay , W.L. 1969 . EDTA‐ammoniurn carbonate soil test for Zn . Soil Sci. Soc. Am. Proc. , 33 : 49 – 54 .
- Zaharieva , T.B. 1978 . Effect of Fe form introduced in soil on the degree of Fe‐chlorosis and chlorophyll concentration in the SK‐4 maize hybrid . Pochvozn. Agxochim. , 13 : 56 – 63 .
- Zaharieva , T.B. Responses of corn to application of Fe and Zn to calcareous soil . Proceedings of the 9th‐ World Fertilizer Congress . June 11–16 1984 , Budapest, Hungary. (in press)
- Zaharieva , T.B. 1985 . Fe fertilizing . Pochvozn. Agrochim. Rast. Zast. , 20 : 67 – 73 .