Adams, R. S. 1975. Variability in mineral and trace element content of dairy cattle feeds. J. Dairy Sci. 58:1538-1548.
ARC. 1980. The Nutrients Requirements of Ruminant Livestock. 4th ed. 73-310. CAB International, Wallingford.
Cuesta, P. A., L. R. McDowell, W. E. Kunkle, F. Bullock, A. Drew, N. S. Wilkinson and F. G. Martin. 1993. Seasonal variation of soil and forage mineral concentrations in north Florida. Communication in Soil Science and Plant Analysis 24:335-347.
Dua, K. and A. D. Care. 1995. Impaired absorption of magnesium in the etiology of grass tetany. Br. Vet. J. 151:413-426.
Duncan, D. B. 1955. Multiple range and multiple F-test. Biometrics 11:1-42.
Economic Survey. 2003-2004. Government of Pakistan, Finance Division Economic Advisor's Wing, Islamabad.
Espinoza, J. E., L. R. McDowell, N. S. Wilkinson, J. H. Conrad and F. G. Martin. 1991. Monthly variation of forages and soil minerals in Central Florida. I. Macro-minerals. Communications in Soil Science and Plant Analysis 22:2023-2056.
Fick, K. R., L. R. McDowell, P. H. Miles, N. S. Wilkinson, J. D. Funk and J. H. Conrad. 1979. Methods of mineral analysis for plant and animal tissues. 2nd ed. Department of Animal Sciences, University of Florida, Gainesville.
INRA. 1989. Mineral requirements (Ed. R. Jarrige). Ruminant Nutrition: Recommended allowances and feed tables. Institut National de la Recherche Agronomique (INRA). John Libbey Eurotext Publications, Paris. pp. 49-59.
Judson, G. J. and J. D. McFarlane. 1998. Mineral disorders in grazing livestock and the usefulness of soil and plant analysis in the assessment of these disorders. Aust. J. Experi. Agric. 38:707-723.
Judson, G. J., I. W. Caple, J. P. Langlands and D. W. Peter. 1987. Mineral nutrition of grazing ruminants in southern Australia. Temperate Pastures Their Production, Utilization and Management (Ed. J. L. Wheeler, C. J. Pearson and G. E. Robards). 377-385. Australian Wool Corporation/CSIRO: East Melbourne.
Khan, Z. I., A. Hussain, M. Ashraf and L. R. McDowell. 2006. Mineral Status of Soils and Forages in Southwestern Punjab-Pakistan: Micro-minerals. Asian-Aust. J. Anim. Sci. 19:1139-1147.
Kim, J. D., S. G. Kim, S. J. Abuel, C. H. Kwon, C. N. Shin and K. H. Ko. 2006. Effect of Location, Season, and Variety on Yield and Quality of Forage Oat. Asian-Aust. J. Anim. Sci. 19:970-977.
Little, D. A. 1982. Utilization of minerals. Nutritional Limits to Animal Production from Pastures (J. B. Hacker). 259-283. Commonwealth Agricultural Bureaux: Slough, UK.
McDowell, L. R. 1985. Nutrition of Grazing Ruminants in Warm Climates. Academic Press, New York, p. 443.
McDowell, L. R. 1997. Minerals for Grazing Ruminants in Tropical Regions. Extension Bulletin, Animal Science Department, Centre for Tropical Agriculture, University of Florida. 81.
McDowell, L. R. and G. Valle. 2000. Major minerals in forages. Forage Evaluation in Ruminant Nutrition (Ed. D. I. Givens, E. Owen, R. F. E. Oxford and H. M. Omed). p. 373. CAB International, Wallingford, UK.
McDowell, L. R., J. H. Conrad and F. G. Hembry. 1993. Minerals for Grazing Ruminants in Tropical Regions. Univ. Florida, Gainesville.
McDowell,L.R.1996.Feeding minerals to cattle in pasture. Anim. Feed Sci. Technol. 60:241-246.
Memon, K. S., A. Rashid and H. K. Puno. 1992. Phosphorus deficiency diagnosis and p soil test calibration in Pakistan. Proceedings Trop. Soils Bulletin No. 92-03, Phosphorous decision support system workshop, College Station, Texas, March 11-12, 1992, University of Hawaii: Honolulu, Hawaii, 116-139.
Meschy, F. 2000. Recent progress in the assessment of mineral requirements of goats. Lives. Produc. Sci. 64:9-14.
Minson, D. J. 1990. Forage in ruminants. Academic Press Inc., San Diego, California, USA.
Morris, J. G. 1980. Assessment of sodium requirements of grazing beef cattle: A review. J. Anim. Sci. 50:145-152.
National Research Council. 1984. Nutrient requirements of domestic animals. Nutrient Requirements of Beef Cattle (6th rev. ed.). Natl. Acad. Sci. Washington, DC.
National Research Council. 1985. Nutrient requirements of domestic animals, Nutrient Requirements of Sheep (5th ed.) Natl. Acad. Sci. NRC, Washington, DC.
National Research Council. 2001. Nutrient requirements of dairy cattle. 7th revised edition. National Academy of Sciences, Washington, DC, USA.
National Research Council. 1996. National Research Council. Nutrient requirements of beef cattle. 7th revised edition. National Academy of Sciences, Washington, DC, USA.
NCA 1988. Report of the National Commission on Agriculture. MINFAL, Government of Pakistan, Islamabad.
Netherlands Committee on Mineral Nutrition 1973. Tracing and treating mineral disorders in dairy cattle. Netherlands Committee on Mineral Nutrition, Centre for Agriculture Publishing and Documentation-Wageningen, The Netherlands.
NFDC (National Fertilizer Development Center). 1993. Fertilizer statistics data base. Fertilizer Development of Agriculture Nutrient Circular, 939.
Ogebe, P. O., J. A. Ayoade, L. R. McDowell, F. G. Martin and N. S. Wilkinson. 1995. Mineral concentrations of forages and soils in Benue State, Nigeria. I. Macrominerals and forage in vitro organic matter digestibility and crude protein concentrations. Communications in Soil Science and Plant Analysis 26:1989-2007.
Pastrana, R., L. R. McDowell, J. H. Conrad and N. S. Wilkinson. 1991. Macromineral status of sheep in the Paramo region of Colombia. Small Rumin. Res. 5:9-21.
Perkin-Elmer Corp. Analytical Methods for Atomic Absorption Spectrophotometry. Perkin-Elmer Corp.: Norwalk, CT, 1980.
Prabowo, A., L. R. McDowell, N. S. Wilkinson, C. J. Wilcox and J. H. Cornad. 1990. Mineral status of grazing cattle in South Sulawesi, Indonesia, I. Macrominerals. Asian-Aust. J. Anim. Sci. 4:111-120.
Reuter, D. J. and J. B. Robinson. 1997. Plant Analysis. An Interpretation Manual. 2nd ed. CSIRO Publishing: Melbourne.
Salih, Y. M., L. R. McDowell, J. F. Hentges, R. M. Mason Jr. and J. H. Conrad. 1983. Mineral status of grazing beef cattle in the warm climate region of Florida. Trop. An. Health Proceed. 15:245-251.
Smith, F. W. and J. F. Loneragon. 1997. Interpretation of plant analysis: concepts and principles. Plant Analysis: An Interpretation Manual. 2nd Ed. (Ed. D. J. Reuter and J. B. Robinson), 3-33. CSIRO Publishing: Melbourne.
Ternouth, J. H. 1990. Phosphorus and beef production in northern Australia. 3. Phosphorus in cattle-a review. Tropical Grasses 24:159-69.
Tiffany, M. E., L. R. McDowell, G. A. O'Connor, F. G. Martin, N. S. Wilkinson, E. C. Cardoso, S. S. Percival and P. A. Rabiansky. 2000. Effects of pasture applied bio solids on performance and mineral status of grazing beef heifers. J. Anim. Sci. 78:1331.
Tiffany, M. E., L. R. McDowell, G. A. O'Connor, H. Nguyen, F. G. Martin, N. S. Wilkinson and N. A. Katzowitz. 2001. Effects of residual and reapplied biosolids on forage and soil concentrations over a grazing season in north Florida. II. Microminerals. Communications in Soil Science and Plant Analysis 32:2211-2226.
Underwood, E. J. 1981. The Mineral Nutrition of Livestock. Commonwealth Agricultural Bureaux, London.
Underwood,E.J and N.F.Suttle.1999.The Mineral Nutrition of Livestock,(3rd.ed) CAB International, Wellington and New York,USA.
Vargas, E. and L. R. McDowell. 1997. In Mineral Deficiencies of Cattle in Central America and the Caribbean, Emphasizing Cost Rica. Proceedings of the International Conference of Livestock in the Tropics, University of Florida, Gainesville, Florida, May, Gainesville, Florida, 1997, 99-114.