Relationship between potassium and sodium in sugar beet
1998
Haneklaus, S. | Knudsen, L. | Schnug, E.
Results of a field survey in northern Germany and Denmark strengthened the importance of a balanced sodium (Na) and potassium (K) supply for sugar beet. Compensation of K by Na is obvious in the range of moderate K deficiency but maximum yields required a minimum concentration of 35 mg K g-1 in foliar dry matter and a minimum of 6 mg Na g-1 at the same time. Field studies were carried out in order to quantify the effect of Na applications on yield and quality of sugar beet in relation to soil type. Sodium fertilization decreased K contents in sugar beet leaves significantly in favor of higher Na and chlorine (Cl) uptake which also induced higher water contents in the leaves of sugar beet during the main growing period. Additional Na supply resulted in yield increases of up to 87 dt ha-1.
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