PL PATH 300 Study Guide - Midterm Guide: Phytophthora Infestans, Hemileia Vastatrix, Fungicide
Document Summary
Ipm for late blight: cull piles, getting rid of initial inoculum, forecasting, Soil: tropical soils often thin and nutrient-poor; nutrients are tied up in biological. Multiple types of control together, management based on multiple tactics complementary, basing it on the biology of the organism, ecology. Ipm for verticillium: plant in fertile well drained soil. Avoid fertilizers with high nitrogen content, if economically feasible, and if available, use soil fumigation as a preplant treatment, do not plant susceptible cultivars or related susceptible crops have grown for the past five years. Multiline: deliberately have a susceptible plant to promote simple races of pathogens. Multiline cultivar near isogenic, back-cross-derived lines, each of which contains a different race-specific single gene for disease resistance. Economic threshold:the point at which control outweigh the costs of not treating (loss in yield, etc) Farming systems/international agr: uniqueness: materials. scale subsistence or market farming wedged into marginal land.
