Responses of soybean, <i>Glycine max</i> (L.) Merr. to dolomite and calcite fertilization in an upland field converted from a paddy field

Dolomite [CaMg(CO3)2] is used widely for soybean, Glycine max (L.) Merr. production in Japan to amend soil pH, although magnesium (Mg) the dolomite can inhibit soybean growth and yield. The aim of this study was determine effect Mg on a paddy – upland rotation field 2019–2020 by comparing application calcite (CaCO3). test included three replications with lime applications: control (no lime), dolomite, calcite. amounts applied each year were 253 259 g m−2, respectively. pH almost similar following applications whereas exchangeable content higher than other applications. shoot weight from flowering stage harvest (R8) significantly However, at only R8 application. In 2019–2020, highest yield resulted (355 m−2) followed (312 (260 m−2). severity soil-borne diseases lower application, even Thus, increased improving pH; however, inhibited further increase field.