References
- Beverly , R.B. 1987 . Comparison of DRIS and alternative nutrient diagnostic methods for soybean . J. Plant Nutr. , 10 : 901 – 920 .
- Beverly , R.B. 1987 . Modified‐DRIS method for simplified nutrient diagnosis of ‘Valencia’ oranges . J. Plant Nutr. , 10 : 1401 – 1408 .
- Beverly , R.B. , Sumner , M.E. , Letzsch , W.S. and Plank , C.O. 1986 . Foliar diagnosis of soybeans by DRIS . Commun. Soil Sci. Plant Anal. , 17 : 237 – 256 .
- Box , G.E.P. and Wilson , K.B. 1951 . On the experimental attainment of optimum conditions . J. Royal Statist. Soc. (Ser. B.). , 13 : 1 – 45 .
- Brupbacker , R.H. , Bonner , W.H. and Sedberry , J.E. Jr. 1968 . Analytical methods and procedures used in the soil testing laboratory . La. Agr. Exp. Stn. Bull. , : 632
- deMooy , C.J. and Pesek , John . 1971 . Response in yield and leaf composition of soybean varieties to phosphorus, potassium, and calcium carbonate materials . Iowa State University of Science and Technology, Agricultural Home Economics Exp. Stn. Res. Bull. , : 572
- Fehr , W.R. , Caviness , C.E. , Burmood , D.T. and Pennington , J.S. 1971 . Stage of development description for soybeans [Glycine max. (L) Merrill] . Crop Sci. , 11 : 929 – 931 .
- Hallmark , W.B. , Beverly , R.B. , deMooy , C.J. and Pesek , John . 1991 . Relationship of diagnostic nutrient expression to soybean phosphorus and potassium diagnoses . Agron. J. , 83 : 858 – 863 .
- Hallmark , W.B. , Beverly , R.B. , Parker , M.B. , Adams , J.F. , Boswell , F.C. , Ohki , K. , Shuman , L.M. and Wilson , D.O. 1989 . Evaluation of soybean zinc and manganese requirements by the M‐DRIS and sufficiency range methods . Agron. J. , 81 : 770 – 776 .
- Hallmark , W.B. , Beverly , R.B. , Sumner , M.E. , deMooy , C.J. , Morris , H.F. , Pesek , John and Fontenot , J.D. 1990 . Soybean phosphorus and potassium evaluation by three M‐DRIS data bases . Agron. J. , 82 : 323 – 328 .
- Hallmark , W.B. , deMooy , C.J. , Morris , H.F. , Pesek , John , Shao , K.P. and Fontenot , J.D. 1987 . Detection of soybean nutrient deficiencies as influenced by plant growth stage . Agron. J. , 80 : 586 – 591 .
- Hallmark , W.B. , deMooy , C.J. and Pesek , John . 1987 . Comparison of two DRIS methods for diagnosing nutrient deficiencies . J. Fert. Issues , 4 : 151 – 158 .
- Hallmark , W.B. , Morris , H.F. and Fontenot , J.D. 1988 . Use of DRIS to formulate a soybean foliar fertilization program . J. Fert. Issues. , 5 (4) : 131 – 141 .
- Hallmark , W.B. , Walworth , J.L. , Sumner , M.E. , deMooy , C.J. , Pesek , J. and Shao , X.P. 1987 . Separating limiting from nonlimiting nutrients . J. Plant Nutr. , 10 : 1381 – 1390 .
- Hanway , J.J. 1962 . Corn growth and composition in relation to soil fertility. II. Uptake of N, P, and K and their distribution in different plant parts during the growth season . Agron. J. , 54 : 217 – 222 .
- Hanway , J.J. and Heidel , H. 1957 . Soil Analysis Methods as Used in the Iowa State College Soil Testing Laboratory , Iowa State College Cooperative Extension Service Agronomy Mimeo 57 Ames , IA
- Jones , C.A. 1981 . Proposed modification of the diagnosis and recommendation integrated system (DRIS) for interpreting plant analysis . Commun. Soil Sci. Plant Anal. , 12 : 785 – 794 .
- Snedecor , G.W. and Cochran , W.G. 1973 . Statistical Methods. , 6th edition , Ames , IA : Iowa State University Press .
- Approved for publication by the Director of the Louisiana Agricultural Experiment Station as manuscript number 93–70–7263.