Soil and plant calibration for cucumbers grown in the mid-Atlantic coastal plain.

摘要: Abstract Few soil test and plant tissue calibration data exist for cucumbers (Cucumis sativus L.). Two years of a singly‐replicated cucumber fertility study were conducted to develop purposes employing the Boundary Line Approach. Fertility treatments consisting 4 K levels (as KC1), 3 Mg MgCl2), pH Calcitic limestone), N rates urea ammonium nitrate) factorilly arranged completely randomized give 108 in both 1987 1988. Analyses performed upon leaf samples N, P, K, Ca at early bloom Mehlich (M) 1‐ 3‐ Mg, pH. Cucumber yields determined on (two fruit pickings) total (four sampling periods. High‐yielding attained (Ml = 64 mg/kg) 29 lower than currently recommended. No significant differences correlation coefficients between either (Ml, M3) extractant ...