References
- Chrlstensen , P. D. , Toth , S. J. and Bear , F. E. 1950 . The states of soil manganese as influenced by moisture, organic matter, and pH . Soil Sci. Soc. Am. Proc. , 15 : 279 – 282 .
- Collins , J. F. and Bud , S. W. 1970 . Effects of fluctuation in the Eh‐pH environment and iron and/or manganese equilibria . Soil Sci. , 110 : 111 – 118 .
- Cox , F. R. 1968 . Development of a yield response prediction and manganese soil test interpretation for soybeans . Agron. J. , 60 : 521 – 524 .
- Fehr , W. R. , Caviness , C. E. , Burmood , D. T. and Pennington , J. S. 1971 . Stage of development descriptions for soybeans, Glycine max (L.) Merrill . Crop Sci. , 11 : 929 – 931 .
- Fujimoto , C. K. and Sherman , G. D. 1948 . Behavior of manganese in the soil and the manganese cycle . Soil Sci. , 66 : 131 – 145 .
- Godo , Gnahoua H. and Reisenauer , E. M. 1980 . Plant effects on soil manganese availability . Soil Sci. Soc. Am. J. , 44 : 993 – 995 .
- Grass , L. F. 1969 . Tile clogging by iron and manganese in Imperial Valley, California . J. Soil Water Conserv. , 24 (4) : 135 – 138 .
- Hammes , Jack K. and Berger , K. C. 1960 . Chemical extraction and crop removal of manganese from air‐dried and moist soils . Soil Sci. Soc. Am. Proc. , 24 : 361 – 364 .
- Hardy , G. W. 1967 . Soil testing and plant analysis , Madison , Wisconsin : Soil Sci. Soc. of Am. Inc. . Part II. Plant analysis
- Leeper , G. W. 1947 . The forms and reactions of manganese in the soil . Soil Sci. , 66 : 79 – 94 .
- Lindsay , W. L. and Norvell , W. A. 1978 . Development of a DTPA soil test for zinc, iron, manganese, and copper . Soil Sci. Soc. Am. Proc. , 42 : 421 – 428 .
- Meek , F. D. , Makenzie , A. J. and Grass , L. B. 1968 . Effects of organic matter, flooding time, and temperature on the dissolution of iron and manganese in soil . Soil Sci. Soc. Am. Proc. , 32 : 634 – 638 .
- Melsted , S. W. , Motto , H. L. and Peck , T. R. 1969 . Critical plant nutrient composition values useful in interpreting plant analysis data . Agron. J. , 61 : 17 – 20 .
- Mulder , E. G. and Gerretsen , F. C. 1952 . Soil manganese in relation to plant growth . Adv. Agron. , 4 : 221 – 277 .
- Ohki , K. , Boswell , F. C. , Parker , M. B. , Shuman , L. M. and Wilson , D. O. 1979 . Critical manganese deficiency level of soybean related to leaf position . Agron. J. , 71 : 233 – 234 .
- Parker , M. F. , Boswell , F. C. , Ohki , K. , Shuman , L. M. and Wilson , D. O. 1981 . Manganese effects on yield and nutrient concentration in leaves and seed of soybean cultivars . Agron. J. , 73 : 643 – 646 .
- Ponnamperuma , F. N. 1972 . The chemistry of submerged soils . Adv. Agron. , 24 : 29 – 96 .
- Randall , G. W. , Schulte , E. E. and Corey , R. B. 1975 . Effect of soil and foliar‐applied manganese on the micronutrient content and yeild of soybeans . Agron. J. , 67 : 502 – 507 .
- Salcedo , I. H. , Ellis , B. G. and Lucas , R. E. 1979 . Studies in soil manganese: II: Extractable manganese and plant uptake . Soil Sei. Soc. Am. J. , 43 : 138 – 141 .
- Shuman , L. M. , Boswell , F. C. , Ohki , K. , Parker , M. B. and Wilson , D. O. 1980 . Critical soil manganese levels for four extractants for soybeans grown in sandy soil . Soil Sei. Soc. Am. J. , 44 : 1021 – 1025 .
- Sims , J. L. and Patrick , W. H. 1976 . The distribution of micro‐nutrient cations in soil under conditions of varying redox potential and pH. . Soil Sei. Soc. Am. Proc. , 42 : 258 – 262 .
- Southern Cooperative Series . 1974 . Procedures used by soil testing laboratories in the Southern Region of the united States , Bulletin 190 23 Auburn , Al. 36830 : Ala. Agrie. Exp. Sta. .
- Steckel , J. E. 1947 . Manganese fertilization of soybeans in Indiana . Soil Sei. Soc. Am. Proc. , 11 : 345 – 348 .
- Tiller , K. G. 1963 . Weathering and soil formation of diolerite with particular reference to several trace elements . Aust. J. Soil Res. , 1 : 74 – 90 .
- Walker , J. M. and Baber , S. A. 1960 . The availability of chelated Mn to millet and its equilibria with other forms of Mn in the soil . Soil Sci. Soc. Am. Proc. , 24 : 485 – 488 .
- Zende , G. K. 1954 . The effect of air‐drying on the level of extractable manganese in the soil . J. Indian Soc. Soil Sci. , 2 : 55 – 61 .
- Contribution from Dep. of Agron., Kentucky Agri. Exp. Stn., Lexington, 40546. This paper (No. 80–3–81) is published with approval of the Director of the Kentucky Agri. Exp. Sta.