References

1. H. Bortels. Molybd�n als Katalysator bei der biologischen Stickstoffbindung. Arch. Mikrobiol. 1:333-342, 1930.


2. R.A. Steinberg. Relation of accessory growth substances to heavy metals, including molybdenum, in the nutrition of Aspergillus niger. J. Agric. Res. 52:439-448, 1936.


3. D.I. Arnon, P.R. Stout. Molybdenum as an essential element for higher plants. Plant Physiol. 14:599-602, 1939.
4. D.I. Arnon. Ammonium and nitrate nutrition of barley at different seasons in relation to hydrogen-ion concentration, manganese, copper, and oxygen supply. Soil Sci. 44:91-114, 1937.


5. D.I. Arnon. Microelements in culture-solution experiments with higher plants. Am. J. Bot. 25:322-325, 1938.


6. D.I. Arnon, P.R. Stout. The essentiality of certain elements in minute quantity for plants with special reference to copper. Plant Physiol. 14:371-375, 1939.


7. R.R. Mendel, G. Schwarz. Molybdoenzymes and molybdenum cofactor in plants. Crit. Rev. Plant Sci. 18:33-69, 1999.


8. W. Zimmer, R. Mendel. Molybdenum metabolism in plants. Plant Biol. 1:160-168, 1999.


9. H. Marschner. Mineral Nutrition of Higher Plants. 2nd ed. New York: Academic Press, 1995, pp. 369-379.


10. P.C. Srivastava. Biochemical significance of molybdenum in crop plants. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 47-70.


11. S.N. Mishra, P.K. Jaiwal, R.P. Singh, H.S. Srivastiva. Rhizobium-legume association. In: H.S. Srivastava, R.P. Singh, eds. Nitrogen Nutrition and Plant Growth. Enfield, NH: Science Publishers, Inc., 1999, pp. 45-102.


12. U.C. Gupta, J. Lipsett. Molybdenum in soils, plants, and animals. Adv. Agron. 34:73-115, 1981.


13. D. Voet, J.G. Voet. Biochemistry. 2nd ed. New York: Wiley, Inc., 1995, pp. 820-822.


14. R.M. Allen, J.T. Roll, P. Rangaraj, V.K. Shah, G.P. Roberts, P.W. Ludden. Incorporation of molybdenum into the iron-molybdenum cofactor of nitrogenase. J. Biol. Chem. 274:15869-15874, 1999.


15. M.B. Peoples, E.T. Craswell. Biological nitrogen fixation: investments, expectations and actual contributions to agriculture. Plant Soil 141:13-39, 1992.


16. T. George, J.K. Ladha, R.J. Buresh, D.P. Garrity. Managing native and legume-fixed nitrogen in lowland rice-based cropping systems. Plant Soil 141:69-91, 1992.


17. E.J. Hewitt. A perspective of mineral nutrition: essential and functional metals in plants. In: D.A. Robb, W.S. Pierpoint, eds. Metals and Micronutrients: Uptake and Utilization by Plants. New York: Academic Press, 1983, pp. 277-326.


18. M.B. Parker, H.B. Harris. Yield and leaf nitrogen of nodulating and non-nodulating soybean as affected by nitrogen and molybdenum. Agron. J. 69:551-554, 1977.


19. K. Mengel, E.A. Kirkby. Principles of Plant Nutrition. 4th ed. Bern, Switzerland: International Potash Institute, 1987, pp. 551-558.


20. B.A. Notton. Micronutrients and nitrate reductase. In: D.A. Robb, W.S. Pierpoint, eds. Metals and Micronutrients: Uptake and Utilization by Plants. New York: Academic Press, 1983, pp. 219-240.


21. Z.Z. Li, P.M. Gresshoff. Developmental and biochemical regulation of 'constitutive' nitrate reductase activity in leaves of nodulating soybean. J. Exp. Bot. 41:1231-1238, 1990.


22. P.J. Randall. Changes in nitrate and nitrate reductase levels on restoration of molybdenum to molybdenum- deficient plants. Aus. J. Agric. Res. 20:635-642, 1969.


23. P.M. Giordano, H.V. Koontz, J.W. Rubins. C14 distribution in photosynthate of tomato as influenced by substrate copper and molybdenum level and nitrogen source. Plant Soil 24:437-446, 1966.



24. T. Koshiba, E. Saito, N. Ono, N. Yamamoto, M. Sato. Purification and properties of flavin- and molybdenum- containing aldehyde oxidase from coleoptyles of maize. Plant Physiol. 110:781-789, 1996.


25. J. Normanly, J.P. Slovin, J.D. Cohen. Rethinking auxin biosynthesis and metabolism. Plant Physiol. 107:323-329, 1995.


26. S. Merlot, J. Giraudat. Genetic analysis of abscisic acid signal transduction. Plant Physiol. 114:751-757, 1997.


27. C. Kisker, H. Schindelin, A. Pacheco, W.A. Wehbi, R.M. Garrett, K.V. Rajagopalan, J.H. Enemark, D.C. Rees. Molecular basis of sulfite oxidase deficiency from the structure of sulfite oxidase. Cell 91:973-983, 1997.


28. L.J. DeKok. Sulfur metabolism in plants exposed to atmospheric sulfur. In: H. Rennenburg, C. Brunold, L.J. Dekok, I. Stulen, eds. Sulfur Nutrition and Sulfur Assimilation in Higher Plants. Hauge, Netherlands: SPB Academic Publishing, 1990, pp. 111-130.


29. A.J. Anderson. Molybdenum deficiency on a South Australian ironstone soil. J. Aus. Inst. Agric. Sci. 8:73-75, 1942.


30. A. Szalay, M. Szilagyi. Laboratory experiments on the retention of micronutrients by peat humic acids. Plant Soil 29:219-224, 1968.


31. Z.Y. Wang, Y.L. Tang, F.S. Zhang. Effect of molybdenum on growth and nitrate reductase activity of winter wheat seedlings as influenced by temperature and nitrogen treatments. J. Plant Nutr. 22:387-395, 1999.


32. S. Kannan, S. Ramani. Studies on molybdenum absorption and transport in bean and rice. Plant Physiol. 62:179-181, 1978.


33. G.R. Hagstrom, K.C. Berger. Molybdenum status of three Wisconsin soils and its effect on four legume crops. Agronomy J. 55:399-401, 1965.


34. E.G. Mulder. Importance of molybdenum in the nitrogen metabolism of microorganisms and higher plants. Plant Soil 1:94-119, 1948.


35. W. Bussler. Die Entwicklung der Mo-Mangelsymptome an Blumenkohl. Z. Pflanzenern�hr Bodenk 125:36-50, 1970.


36. R.G. Weir, G.C. Creswell. Plant Nutrient Disorders 3-Vegetable Crops. Melbourne: Inkata Press, 1993, pp. 85-99.


37. R.D. Wilson. Molybdenum in relation to the scald disease of beans. Aus. J. Sci. 11:209-211, 1949.


38. V. Romheld, H. Marschner. Function of micronutrients in plants. In: J.J. Mortvedt, F.R. Cox, L.M. Shuman, R.M. Welch, eds. Micronutrients in Agriculture. Madison, WI: SSSA, 1991, pp. 297-328.


39. W.D. Gubler, R.G. Gorgan, P.P. Osterli. Yellows of melons caused by molybdenum deficiency in acid soil. Plant Dis. 66:449-451, 1982.


40. R.D. Davis, P.H.T. Beckett, E. Wollan. Critical levels of twenty potentially toxic elements in young spring barley. Plant Soil 49:395-408, 1978.


41. U.C. Gupta, E.W. Chipman, D.C. MacKay. Effects of molybdenum and lime on the yield and molybdenum concentration of crops grown on acid sphagnum peat soil. Can. J. Plant Sci. 58:983-992, 1978.


42. U.C. Gupta. Deficient, sufficient, and toxic concentrations of molybdenum in crops. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 150-159.


43. S. Kevresan, N. Petrovic, M. Popovic, J. Kandrac. Nitrogen and protein metabolism in young pea plants as affected by different concentrations of nickel, cadmium, lead, and molybdenum. J. Plant Nutr. 24:1633-1644, 2001.


44. A. Kabata-Pendias, H. Pendias. Trace Elements in Soils and Plants. 3rd ed. New York: CRC Press, 2001, pp. 260-267.


45. C. Neunh�userer, M. Berreck, H. Insam. Remediation of soils contaminated with molybdenum using soil amendments and phytoremediation. Water, Air, Soil Pollut. 128:85-96, 2001.


46. J.M. Stark, E.F. Redente. Copper fertilization to prevent molybdenosis on retorted oil shale disposal piles. J. Environ. Qual. 19:502-504, 1990.


47. N.S. Pasricha, V.K. Nayyar, N.S. Randhawa, M.K. Sinha. Influence of sulphur fertilization on suppression of molybdenum uptake by berseem (Trifolium alexandrium) and oats (Avena sativa) grown on a molybdenum-toxic soil. Plant Soil 46:245-250, 1977.


48. J.J. Mortvedt. Nitrogen and molybdenum uptake and dry matter relationships of soybeans and forage legumes in response to applied molybdenum on acid soil. J. Plant Nutr. 3:245-256, 1981.


49. J.B. Jones Jr. Interpretation of plant analysis for several agronomic crops. In: G.W. Hardy, ed. Soil Testing and Plant Analysis. Madison, WI: SSSA, 1967, pp. 49-58.


50. P. Neubert, W. Wrazidlo, H.P. Vielemeyer, I. Hundt, F. Gollmick, W. Bergmann. Tabellen zur pflanzenanalyse - Erste orientierende "Ubersicht,". Jena: Institut f�r Pflanzenern�hrung, 1970, pp. 1-40.


51. U.C. Gupta. Boron and molybdenum nutrition of wheat, barley, and oats grown in Prince Edward Island soils. Can. J. Soil Sci. 51:415-422, 1971.


52. H.A. Mills, J.B. Jones Jr. Plant Analysis Handbook II. Athens, GA: MicroMacro Publishing, 1996, pp. 185-414.


53. R.V. Dios, T.V.I. Broyer. Deficiency symptoms and essentiality of molybdenum in crop hybrids. Agrochimica 9:273-284, 1965.


54. R.D. Vos. Corn. In:W.F. Bennett, ed. Nutrient Deficiencies and Toxicities in Plants. St. Paul, MN: APS Press, 1993, pp. 11-14.



55. W. Bergmann. Nutritional Disorders of Plants. Visual and Analytical Diagnosis. New York: Gustav Fischer, 1992, pp. 1-741.


56. D.H. Smith, M.A. Wells, D.M. Porter, F.R. Cox. Peanuts. In: W.F. Bennett, ed. Nutrient Deficiencies and Toxicities in Crop Plants. St. Paul, MN: APS Press, 1993, pp. 105-110.


57. U.C. Gupta. Molybdenum requirement of crops grown on a sandy clay loam soil in the greenhouse. Soil Sci. 110:280-282, 1970.


58. N.K. Peterson, E.R. Purvis. Development of molybdenum deficiency symptoms in certain crop plants. Soil Sci. Soc. Am. Proc. 25:111-117, 1961.


59. A. Ulrich, F.J. Hills. Plant analysis as an aid in fertilizing sugar crops. Part I. Sugarbeets. In: L.M. Walsh, J.D. Beaton, eds. Soil testing and Plant Analysis, 2nd ed. Madison, WI: SSSA, 1973, pp. 271-278.


60. C.M. Johnson, G.A. Pearson, P.R. Stout. Molybdenum nutrition of crop plants. II. Plant and soil factors concerned with molybdenum deficiencies in crop plants. Plant Soil 4:178-196, 1952.


61. E.W. Chipman, D.C. MacKay, U.C. Gupta, H.B. Cannon. Response of cauliflower cultivars to molybdenum deficiency. Can. J. Plant Sci. 50:163-167, 1970.


62. W. Plant. The Control of Molybdenum Deficiency in Lettuce Under Field Conditions. Long Ashton Res. Sta. Ann. Rep. 1951, pp. 113-115.


63. U.C. Gupta, P.V. LeBlanc. Effect of molybdenum application on plant molybdenum concentration and crop yields on sphagnum peat soils. Can. J. Plant Sci. 70:717-721, 1990.


64. A. Ulrich, J.T. Monaghan, E.D. Whitney. Sugarbeets. In: W.F. Bennett, ed. Nutrient Deficiencies and Toxicities in Crop Plants. St. Paul, MN: APS Press, 1993, pp. 91-98.


65. D.A. Cox. Foliar-applied molybdenum for preventing or correcting molybdenum deficiency of poinsettia. Hortscience 8:894-895, 1992.


66. S.C. Agarwala, E.J. Hewitt. Molybdenum as a plant nutrient. III. The interrelationships of molybdenum and nitrate supply in the growth and molybdenum content of cauliflower plants grown in sand culture. J. Hort. Sci. 29:278-290, 1954.


67. E.J. Hewitt. Essential nutrient elements for plants. In: F.C. Stewart, ed. Plant Physiology. Vol. III. Inorganic Nutrition of Plants. New York: Academic Press, 1963, pp. 137-360.


68. E.J. Hewitt, C.S. Gundry. The molybdenum requirement of plants in relation to nitrogen supply. J. Hort. Sci. 45:351-358, 1970.


69. K.L. Hale, S.P. McGrath, E. Lombi, S.M. Stack, N. Terry, I.J. Pickering, G.N. George, E.A.H. Pilon- Smits. Molybdenum sequestration in brassica species. A role for anthocyanins? Plant Physiol. 126:1391-1402, 2001.


70. J. Ishizuka. Characterization of molybdenum absorption and translocation in soybean plants. Soil Sci. Plant Nutr. 28:63-78, 1982.


71. R.O. Miller. High-temperature oxidation: dry ashing. In: Y.P. Kalra, ed. Handbook of Reference Methods for Plant Analysis. Boca Raton, FL: CRC Press, 1998, pp. 53-56.


72. R.O. Miller. Nitric-perchloric acid wet digestion in an open vessel. In: Y.P. Kalra, ed. Handbook of Reference Methods for Plant Analysis. Boca Raton, FL: CRC Press, 1998, pp. 57-62.


73. U.C. Gupta. Determination of boron, molybdenum, and selenium in plant tissue. In: Y.P. Kalra, ed. Handbook of Reference Methods for Plant Analysis. Boca Raton, FL: CRC Press, 1998, pp. 171-182.


74. J.L. Sims, F. Eivazi. Testing for molybdenum availability in soils. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 111-130.


75. C.S. Piper, R.S. Beckworth. A new method for determination of molybdenum in plants. J. Soc. Chem. Ind. 67:374-378, 1948.


76. U.C. Gupta, D.C. MacKay. Determination of molybdenum in plant materials using 4-methyl-1,2- dimercaptobenzene (dithol). Soil Sci. 99:414-415, 1965.


77. F. Eivazi, J.L. Sims. Analytical techniques for molybdenum determination in plants and soils. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 92-110.


78. S.U. Khan, R.O. Cloutier, M. Hidiroglou. Atomic absorption spectroscopic determination of molybdenum in plant tissue and blood plasma. J. Assoc. Off. Anal. Chem. 62:1062-1064, 1979.


79. W.M. Jarrell, M.D. Dawson. Sorption and availability of molybdenum in soils of Western Oregon. Soil Sci. Soc. Am. J. 42:412-415, 1978.


80. P.R. Curtis, J. Grusovin. Determination of molybdenum in plant tissue by graphite furnace atomic absorption spectrophotometry (GFAAS). Commun. Soil Sci. Plant Anal. 16:1279-1291, 1985.


81. R.L. Mitchell, Trace elements in soils. In: F.E. Bear, ed. Chemistry of the Soil. 2nd ed. New York: Reinhold Publishing Corp., 1964, pp. 320-368.


82. K. Norrish. The geochemistry and mineralogy of trace elements. In: D.J.D. Nicholas, A.R. Egan, eds. Trace Elements in Soil-Plant-Animal Systems. New York: Academic Press, Inc., 1975, pp. 55-81.


83. K.J. Reddy, L.C. Munn, L. Wang. Chemistry and mineralogy of molybdenum in soils. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 4-22.


84. J.L. Sims. Molybdenum and cobalt. In: J.M. Bartels, J.M. Bingham, eds. Methods of Soil Analysis. Part 3. Chemical Methods. Madison, WI: SSSA, ASA, 1996, pp. 723-737.


85. P.C. Srivastiva, U.C. Gupta. Trace Elements in Crop Production. Labanon, NH: Science Publishers, Inc., 1996, pp. 101-104.


86. R.M. Welch, W.H. Allaway, W.A. House, J. Kubota. Geographic distribution of trace element problems. In: J.J. Mortvedt, F.R. Cox, L.M. Shuman, R.M. Welch, eds. Micronutrients in Agriculture. Madison, WI: SSSA, 1991, pp. 31-57.


87. U.C. Gupta. Soil and plant factors affecting molybdenum uptake by plants. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 71-91.


88. W.L. Lindsay. Inorganic phase equilibria of micronutrients in soil. In: J.J. Mortvedt et al., eds. Micronutrients in Agriculture. Madison, WI: SSSA, 1972, pp. 41-57.


89. J.J. Mortvedt. Sources and methods for molybdenum fertilization in crops. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 171-181.


90. W.L. Lindsay. Chemical Equilibria in Soils. New York: Wiley, 1979.


91. D.L. Sparks. Environmental Soil Chemistry. New York: Academic Press, 1995, pp. 99-140.


92. K.S. Smith, L.S. Balistrieri, S.M. Smith, R.C. Severson. Distribution and mobility of molybdenum in the terrestrial environment. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 23-46.


93. H.M. Reisenauer, A.A. Tabikh, P.R. Stout. Molybdenum reactions with soils and hydrous oxides of iron, aluminum and titanium. Proc. Soil Sci. Soc. Am. 26:23-27, 1962.


94. L.H.P. Jones. Solubility of molybdenum in simplified systems and aqueous soil suspensions. J. Soil Sci. 8:313-327, 1957.


95. C.P. Sharma, C. Chatterjee. Molybdenum availability in alkaline soils. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 131-149.


96. E.G. Mulder. Molybdenum in relation to growth of higher plants and microorganisms. Plant Soil 5:368-415, 1954.


97. R.J. Xie, A.F. Mackinzie. Molybdate sorption-desorption in soils treated with phosphate. Geoderma 48:321-333, 1991.


98. I. Barshad. Factors affecting the molybdenum content of pasture plants. II. Effect of soluble phosphates, available nitrogen and soluble sulfates. Soil Sci. 71:387-398, 1951.


99. P.R. Stout, W.R. Meagher. Studies of the molybdenum nutrition of plants with radioactive molybdenum. Science 108:471-473, 1948.


100. P.R. Stout, W.R. Meagher, G.A. Pearson, C.M. Johnson. Molybdenum nutrition of crop plants. I Influence of phosphate and sulfate on the absorption of molybdenum from soils and solution cultures. Plant Soil 3:51-87, 1951.


101. H.F. Massey, R.H. Lowe, H.H. Bailey. Relation of extractable molybdenum to soil series and parent rock in Kentucky. Soil Sci. Soc. Am. Proc. 31:200-202, 1967.



102. H.M. Reisenauer. Molybdenum. In: C.A. Black, ed. Methods of Soil Analysis. Part 2. Chemical and Microbiological Properties. Madison, WI: American Society of Agronomy, 1965, pp. 1050-1058.


103. J.L. Grigg. Determination of the available molybdenum in soils. N.Z. J. Sci. Technol. 34:405-414, 1953.


104. E.R. Purvis, N.K. Peterson. Methods of soil and plant analysis for molybdenum. Soil Sci. 81:223-228, 1956.


105. C.M. Johnson, T.H. Arkley. Determination of molybdenum in plant tissue. Anal. Chem. 26:572-574, 1954.


106. S. Henning, T.L. Jackson. Determination of molybdenum in plant tissue using flameless atomic absorption. At. Absorpt. Newsl. 12:100-101, 1973.


107. P.R. Curtis, J. Grusovin. Determination of molybdenum in plant tissue by graphite furnace atomic absorption spectrophotometry (GFAAS). Commun. Soil Sci. Plant Anal. 16:1279-1291, 1985.


108. J.L. Grigg. The distribution of molybdenum in the soils of New Zealand. I. Soils of the North Island. N.Z. J. Agric. Res. 3:69-86, 1960.


109. I. Barshad. Factors affecting the molybdenum content of pasture plants. I. Nature of soil molybdenum, growth of plants, and soil pH. Soil Sci. 71:297-313, 1951.


110. U.C. Gupta, D.C. MacKay. Extraction of water soluble copper and molybdenum in podzol soils. Soil Sci. Soc. Am. Proc. 29:323, 1965.


111. P.N. Soltanpour, A.P. Schwab. A new soil test for simultaneous extraction of macro and micro-nutrients in alkaline soils. Commun. Soil Sci. Plant Anal. 8:195-207, 1977.


112. L. Wang, K.J. Reddy, L.C. Munn. Comparison of ammonium bicarbonate-DTPA, ammonium carbonate, and ammonium oxalate to assess the availability of molybdenum in mine spoils and soils. Commun. Soil Sci. Plant Anal. 25:523-536, 1994.


113. D.C. Martens, D.T. Westermann. Fertilizer applications for correcting micronutrient deficiencies. In: J.J. Mortvedt, F.R. Cox, L.M. Shuman, R.M. Welch, eds. Micronutrients in Agriculture. Madison, WI: SSSA, 1991, pp. 549-582.


114. D.R. Lide. Handbook of Chemistry and Physics. 77th ed. Boca Raton, FL: CRC Press, 1996, pp. 4-35-4-98.


115. U.C. Gupta. Effect of methods of application and residual effect of molybdenum on the molybdenum concentration and yield of forages on podzol soils. Can. J. Soil Sci. 59:183-189, 1979.


116. J.F. Adams. Yield responses to molybdenum by field and horticultural crops. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 182-201.


117. R.F. Vieira, C. Vieira, E.J.B.N. Cardoso, P.R. Mosquim. Foliar application of molybdenum in common bean. II. Nitrogenase and nitrate reductase activities in a soil of low fertility. J. Plant Nutr. 21:2141-2151, 1998.


118. R.F. Vieira, E.J.B.N. Cardoso, C. Vieira, S.T.A. Cassini. Foliar application of molybdenum in common bean. III. Effect on nodulation. J. Plant Nutr. 21:2153-2161, 1998.


119. E.J. Hewitt. Symptoms of molybdenum deficiency in plants. Soil Sci. 81:159-171, 1956.


120. U.C. Gupta, D.C. MacKay. Crop responses to applied molybdenum and copper on podzol soils. Can. J. Soil Sci. 48:235-242, 1968.


121. M.B. Parker, H.B. Harris. Soybean response to molybdenum and lime and the relationship between yield and chemical composition. Agron. J. 54:480-483, 1962.


122. H. Hafner, B.J. Ndunguru, A. Bationo, H. Marschner. Effect of nitrogen, phosphorus and molybdenum application on growth and symbiotic N2-fixation of groundnut in an acid sandy soil in Niger. Fert. Res. 31:69-77, 1992.


123. E.R. Rhoades, D. Nangju. Effects of pelleting cowpea and soyabean seed with fertilizer dusts. Exp. Agric. 15:27-32, 1979.


124. J.N. Fitzgerald. Molybdenum on oats. N.Z. J. Agric. 89:619, 1954.


125. C.H. Burmester, J.F. Adams, J.W. Odom. Response of soybean to lime and molybdenum on Ultisols in northern Alabama. Soil Sci. Soc. Am. J. 52:1391-1394, 1988.


126. D.W. James, T.L. Jackson, H. Harward. Effect of molybdenum and lime on the growth and molybdenum content of alfalfa grown on acid soils. Soil Sci. 105:397-402, 1968.


127. J.A. MacLeod, U.C. Gupta, B. Stanfield. Molybdenum and sulfur relationships in plants. In: U.C. Gupta, ed. Molybdenum in Agriculture. New York: Cambridge University Press, 1997, pp. 229-244.


128. F.P. Rebafka, B.J. Ndunguru, H. Marschner. Single superphosphate depresses molybdenum uptake and limits yield response to phosphorus in groundnut (Arachis hypogaea L.) grown on an acid sandy soil in Niger, West Africa. Fert. Res. 34:233-242, 1993.