Fertilizer Recommendations Guide
FertilizerRecommendations GuideReview and Revision: Jason Clark | Assistant Professor & SDSU Extension Soil Fertility SpecialistEC750 Original Authors: 2005 Jim Gerwing | Extension Soil Specialist Ron Gelderman | Soil Testing Program ManagerDepartment of Agronomy, Horticulture & Plant ScienceCollege of Agriculture, Food & Environmental SciencesContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Soil Test Categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Nitrogen.
= (0.785 – (0.05 x STP)) x YG = (1.286 – (0.0085 x STK)) x YG 17, Barley (malting), bu = 1.5 x YG – STN – LC 18, Wheat (winter), bu = 2.5 x YG – STN – LC
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