Cationic Interrelationships in the Nutrition of the Corn Plant (Zea Mais).

• Main Author: MacKay, Donald Cyril.
• Other Authors: DeLong, W.A. (Supervisor)
• Format: Others
• Language: en
• Published: McGill University 1954
• Subjects: Agricultural Chemistry.
• Online Access: http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=109786

For many years chemists have endeavored to evaluate soils for agricultural purposes and to determine fertilizer needs for maximum crop returns by chemical analysis of soil samples. More recently, attempts have been made to establish "critical levels" of the mineral elements necessary for normal crop growth in various organs of the plants themselves. Both of these procedures have met with some degree of success, but much work remains to be done in standardizing the methods, particularly those of the latter group, against field performance. [...]