Understory Responses to Fertilization of Eroded Kisatchie Soil in Louisiana

摘要

Responses of native vegetation growing on highly eroded Kisatchie soil to a May 1982 application of 672 kg/ha of 16-30-13 fertilizer were monitored on two sites through 1985. Herbage increased from 1,133 kg/ha on control plots to 4,956 kg/ha on fertilized plots by August of the first year. Litter accumulations on treated plots provided excellent soil protection through the fourth year but helped to reduce herbage production nearly to pretreatment levels by August 1985. Woody-plant cover had nearly doubled on fertilized plots by May 1985.