Potato Management Challenges Created by Phosphorus Chemistry and Plant Roots

摘要: A primary objective of phosphorus (P) management is to maintain optimal levels P in the soil solution at root surface. Potato plants typically have low density, resulting higher concentration needs and critical test than most other common crop plants. The chemistry fertilized soils makes maintaining these high concentrations a challenge. Phosphorus has very affinity for solid phase with iron (Fe) aluminum (Al) dominating reactions moderately acid calcium (Ca) alkaline soils. Guidelines stewardship potato production are: (1) adopt practices that develop conditions favor growth development; (2) make source, rate, time placement decisions nutrient applications during stages; (3) use water conservation minimize losses from zone field.