J. Benton Jones, Jr. , earned a BS degree in agricultural science from the University of Illinois and obtained MS and PhD degrees in agronomy from the Pennsylvania State University. He has written extensively on hydroponic topics and has been engaged in hydroponic research projects for much of his professional career. Dr. Jones is considered an authority on applied plant physiology and the use of analytical methods for assessing the nutrient element status of rooting media and plants as a means for ensuring plant nutrient element sufficiency in both soil and soilless crop production settings. At various times, he has served as a director of several university and commercial soil and plant analysis laboratories, and he still serves as an advisor for two such laboratories.

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• Introduction. How plants grow. The essential plant nutrient elements. The nutrient solution. Rooting media. Systems of hydroponic culture. Hydroponic application factors. Educational role. References. Hydroponic reference books. Cited References. Appendix A: Measurement factors. Appendix B: Essential element summarization tables. Appendix C: Diagnostic testing. Appendix D: Common errors made when plants are grown hydroponically. Index.

J. Benton Jones, Jr. , earned a BS degree in agricultural science from the University of Illinois and obtained MS and PhD degrees in agronomy from the Pennsylvania State University. He has written extensively on hydroponic topics and has been engaged in hydroponic research projects for much of his professional career. Dr. Jones is considered an authority on applied plant physiology and the use of analytical methods for assessing the nutrient element status of rooting media and plants as a means for ensuring plant nutrient element sufficiency in both soil and soilless crop production settings. At various times, he has served as a director of several university and commercial soil and plant analysis laboratories, and he still serves as an advisor for two such laboratories.

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• Introduction. How plants grow. The essential plant nutrient elements. The nutrient solution. Rooting media. Systems of hydroponic culture. Hydroponic application factors. Educational role. References. Hydroponic reference books. Cited References. Appendix A: Measurement factors. Appendix B: Essential element summarization tables. Appendix C: Diagnostic testing. Appendix D: Common errors made when plants are grown hydroponically. Index.