Long-Term Responses of Understory Vegetation on a Highly Erosive Louisiana Soilto Fertilization

摘要

Responses of vegetation on highly eroded Kisatchie soils to a broadcastapplication of 600 lb/acre of 16-30-13 granular fertilizer were monitored for 12 years. Understory woody and herbaceous vegetation responded to fertilization immediately, and thus the soil surface was protected from erosion sooner in the fertilized area than in the two unfertilized areas. The frequencies of occurrence of many plant species increased or remained almost constant, but low panicums, Dicanthelium spp., disappeared from all areas over the 12-year period.