Crop Root Distribution as Influenced by Grain Sorghum-Soybean Rotation and Fertilization (original) (raw)

Soil Science Society of America Journal, 1989

Abstract

(…) The experiment was conducted on a Sharpsburg silty clay loam (fine, montmorillinitic, mesic, Typic Argiudoll) near Mead, NE. Fertilizer treatments consisted of: 1) control (no fertilizer); 2) N at 45 kg ha −1 on soybean plots and 90 kg ha −1 on grain sorghum plots; and 3) manure applied at 15.8 Mg dry weight ha −1 yr −1 . Roots were sampled to a depth of 120 cm in 1986 and 150 cm in 1987. Root densities were reduced at most depths when soybean had been grown the previous year. (…)

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