Factors Affecting Specific Gravity of Potatoes Spectrum Analytic
Inc This article discusses some of the factors that can affect
the specific gravity of potatoes. Some work has shown an
association between chloride (Cl) application and decreased
specific gravity. However, other literature indicates that
potatoes are more sensitive than many crops to shortages of
chloride. Producers who suspect that excessive chlorides may be
a problem should consider using potassium sulfate vs. potassium
chloride for K2O. Excess or insufficient soil moisture can lower
specific gravity. Optimum moisture availability as tubers
approach maturity can increase specific gravity. Vine kill at
peak physiological maturity increases specific gravity, and
killing vines slowly with chemicals increases specific gravity
compared to a quick kill by physical means. Short day lengths
during tuber formation contribute to higher specific gravity, so
adjusting planting dates to take advantage of this can be
beneficial. While high levels of availa