White leaf spot is a fungal disease of cruciferous vegetables (brassicas) caused by the pathogen Mycosphaerella capsellae, which is also known as Pseudocercosporella capsellae. The distribution of this disease pathogen is worldwide, it can be found in many countries with temperate climates, where brassicas are grown. The image above shows a pak choi (Chinese cabbage)Continue reading “Plant Diseases – White or Tan Spots on Brassica Leaves”
Tag Archives: fungal diseases
Apple Tree Diseases and Planting Location
Apple tree branches covered in patches of white, woolly fuzz? What you’re seeing is a woolly aphid infestation. These pests can be controlled by spraying a few applications of horticultural oil spray (preferably a natural oil-based product rather than a petroleum oil based one) 7 days apart, it suffocates them quite effectively, and gets pastContinue reading “Apple Tree Diseases and Planting Location”