Lung VQ Scan. Also known as lung or pulmonary ventilation (V) and perfusion (Q) scans. A lung VQ scan is an imaging test that uses a ventilation (V) scan to measure air flow in your lungs and a perfusion (Q) scan to see where blood flows in your lungs. It uses special x ray scanners outside of your body to create pictures of air and blood flow patterns in your lungs.
Yellow leaf spot, also known as leaf septoria, are caused by Septoria cannabis and S. neocannabina. These are fungal pathogens aimed specifically at marijuana plants. It is brought about by warm weather and rain and effect marijuana grown outdoors.
Gray Leaf Spot. Gray leaf spot, caused by Pyricularia grisea, causes bleached spots with dark margins on grass blades. St. Augustinegrass, fescues, ryegrasses and kikuyograss are impacted by gray leaf spot, which prefers warm temperatures, high humidity, and over-watered and over-fertilized lawns.