SAS 30 Lecture Notes - Lecture 16: Centaurea Solstitialis, Biological Warfare, Rangeland
Document Summary
Radiation sometimes used to induce genetic mutations. Radiation breeding is used to produce many crops. Disease is rarely severe unless there is a disturbance. Disturbances alter the habitat and create opportunities for deposition of spores. Rubber tree has one tree per acre in native range in malaysia. Leaf infecting fungi prevent any tree species from growing at high density. Conditions for fungal growth: warm and wet all year round. Diversity is low where conditions do not favor fungal growth. 5 tree species per acre (as opposed to 200-300 in. Not favorable for fungal growth and infection. You can buy spores in a packet and then spread them in rice fields to kill the common and problematic joint vetch fungi. Pathogen can spread naturally on its own. Yellow starthistle is a weed in rangeland. Fungi infects starthistle only and weakens it but does not kill it, but still makes it less competitive.
