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Onion phenological phases and their nutrition requirements - SQM Specialty Plant Nutrition

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Onion phenological phases and their nutrition requirements

The following plan is suggested for realizing the said requirements, for field onions with a life span of 120 days, and an expected yield of 45 MT/ha, by fertigation via drip irrigation.

Potassium nitrate should be used as the primary source of potassium, and a partial source of nitrogen. The balance of nitrogen should be sourced from calcium nitrate, and ammonium nitrate, as per the following phase-specific rates. Trace nutrients should be applied as per soil-, and leaf analysis.

This plan presents the mineral nutrition scheme, in terms of the mass proportions between all macro-, and secondary- nutrients.

Onion phenological

 

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