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CROP NUTRIENT NEEDS
There are more than 100 chemical
elements known today. Only 16 of them have been identified to be essential to
plant growth:
Basic
Nutrients: C, H, and O mainly supplied by air and water.
Primary Nutrients: N, P, K
Secondary Nutrients: Ca, Mg, S
Micronutrients: Zn, Fe, Cu, Mn, B, Mo, Cl
Soil, water and air can provide part of the
nutrient plants need. The rest need to be supplied through other sources. The
amount of each nutrient needs to be supplied through commercial fertilizers or
animal manure depends on the type of crop, yield goal and soil available
nutrient contents. Soil test is the first right step to obtain information of
crop nutrient needs.
Soil Test Interpretations lists nutrients requirement for common
crops grown in Oklahoma. You can also obtain recommendation by using this
interactive program for a particular crop:
Soil
Test Interpretation and Fertilizer Decision Support.
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OSU Poultry
Waste Management Website
Poultry Litter
Marketing Program
CAFO Factsheets
OCES Water
Quality Program
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