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1. Relationship of Seed-placed Phosphatic Fertilizer Salt Index to Crop EmergenceThe role of fertilizer salt index in salt injury to germinating seeds has been recognized for over 60 years. Recent increased use of direct seed placement of fertilizer P has produced a need for a simpler method of making seed-placed fertilizer recommendations. Numerous field studies were conducted utilizing seed-placed P fertilizers. Published fertilizer salt index values were multiplied by the PtOs/ha application rate to give a salt indexha value. Relative plant stand (dependent variable) was linearly... |