RNGR.net is sponsored by the USDA Forest Service and Southern Regional Extension Forestry and is a colloborative effort between these two agencies.

U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

Skip to content. | Skip to navigation

Home Publications Seed and Seedling Diseases in the Western US Effects of Fertilizer on Selected Potential Plant Pathogens in Bareroot Forest Nurseries

Effects of Fertilizer on Selected Potential Plant Pathogens in Bareroot Forest Nurseries

Soil-borne microorganisms, including potential plant pathogens, respond to fertilizers and organic amendments. High levels of nitrogen usually result in increases of Fusarium populations and more severe disease; organic nitrogen sources encourage disease more than inorganic sources. Balanced nutrition of nitrogen, phosphorus, and potassium helps reduce Fusarium diseases. Reducing soil pH and avoiding excessive fertilization may help control Phytophthora diseases. Growers need to monitor disease and formulate fertilizer regimes that do not initiate or aggravate existing disease problems.


Download this file:

PDF document Download this file — PDF document, 2534Kb

Details

Author(s): USDA Forest Service