matteolab.org
Preventative treatments are only designed for oaks. To protect madrone, remove any California bay laurel, tanoak, or ornamental rhododendron growing nearby (30 ft around each madrone). However, be careful when doing so as disturbances often affect madrone health.
Madrone is very susceptible to P. ramorum (pathogen known to cause SOD), and in rare occasions it may support pathogen sporulation enough to cause infection of nearby oaks. Adult madrones typically experience dieback of infected branches, but they are rarely killed by the pathogen. However, seedlings and saplings can be killed and should be removed if growing within 30 feet of oaks.
Does the sudden oak death pathogen sporulate on madrone like it does on California bay laurel? Sudden oak death can kill small madrones and cause significant dieback of larger madrones. While Phytophthora ramorum (the pathogen that causes sudden oak death) does sporulate on madrone, making in an infectious host, it is not a very effective at transmtting the pathogen as infected leaves whither rapidly, eliminating pathogen viability.
The Forest Mycology and Pathology Lab at UC Berkeley has developed a new method for sampling forest canopies. The Sampler Drone is a modified DJI Phantom 2 Vision quadcopter that is lightweight, compact, and exceptionally agile.
The Sampler Drone uses GPS positioning and gyroscopic axis stabilization to provide a stable aerial platform for collection of environmental samples. It is capable of hovering close to any portion of the canopy, taking samples, and returning them safely to the ground.
The forward-facing carbon fiber boom can be outfitted with a variety of modules for leaf, water, or air sampling and with a altitude ceiling of 400m, the drone is able to access trees of any height. The integrated HD camera, when combined with FPV headset goggles, allows the operator to pilot the quadcopter remotely from a first person view, in real time.
Does the sudden oak death pathogen sporulate on madrone like it does on California bay laurel? Sudden oak death can kill small madrones and cause significant dieback of larger madrones. While Phytophthora ramorum (the pathogen that causes sudden oak death) does sporulate on madrone, making in an infectious host, it is not a very effective at transmtting the pathogen as infected leaves whither rapidly, eliminating pathogen viability.
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