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.
Aloe vera plants can turn brown due to sunburn, fungus or bacteria. The plant may be getting too much sunlight or the soil may be too wet.... Aloe vera plants can turn brown due to sunburn, fungus or bacteria. The plant may be getting too much sunlight or the soil may be too wet. Sunburn will make aloe vera leaves turn dry and brown. Mushy brown leaves indicate a fungus, such as basal stem rot, which occurs in the cold and damp. Aloe rust thrives in high humidity and causes brown spots that spread. Bacterial soft rot develops in high humidity and wilts the leaves. To prevent browning, aloe vera plants should be allowed to dry thoroughly between watering.