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Handbook of Plant Nutrition

A plant nutrient is a chemical element that is essential for plant growth and reproduction. Essential element is a term often used to identify a plant nutrient. The term nutrient implies essentiality, so it is redundant to call these elements essential nutrients. Commonly, for an element to be a nutrient, it must fit certain criteria. The principal criterion is that the element must be required for a plant to complete its life cycle. The second criterion is that no other element substitutes fully for the element being considered as a nutrient. The third criterion is that all plants require the element. All the elements that have. | JJCD 5 ao qipiireH Handbook off earn Francis AÍCen V. Barker T avùíJ. Píữeam DK2972_half 5 11 06 12 55 PM Page 1 Handbook of Plant Nutrition DK2972_series 5 11 06 11 36 AM Page 1 BOOKS IN SOILS PLANTS AND THE ENVIRONMENT Editorial Board Agricultural Engineering Robert M. Peart University of Florida Gainesville Crops Mohammad Pessarakli University of Arizona Tucson Environment Kenneth G. Cassman University of Nebraska Lincoln Irrigation and Hydrology Donald R. Nielsen University of California Davis Microbiology Jan Dirk van Elsas Research Institute for Plant Protection Wageningen The Netherlands Plants L. David Kuykendall U.S. Department of Agriculture Beltsville Maryland Kenneth B. Marcum Arizona State University Tempe Soils Jean-Marc Bollag Pennsylvania State University University Park Tsuyoshi Miyazaki University of Tokyo Japan Soil Biochemistry Volume 1 edited by A. D. McLaren and G. H. Peterson Soil Biochemistry Volume 2 edited by A. D. McLaren and J. Skujins Soil Biochemistry Volume 3 edited by E. A. Paul and A. D. McLaren Soil Biochemistry Volume 4 edited by E. A. Paul and A. D. McLaren Soil Biochemistry Volume 5 edited by E. A. Paul and J. N. Ladd Soil Biochemistry Volume 6 edited by Jean-Marc Bollag and G. Stotzky Soil Biochemistry Volume 7 edited by G. Stotzky and Jean-Marc Bollag Soil Biochemistry Volume 8 edited by Jean-Marc Bollag and G. Stotzky Soil Biochemistry Volume 9 edited by G. Stotzky and Jean-Marc .