Gray mold disease of Photinia fraseri and its controlGray mold mainly affects the stems, leaves, flowers, fruits and branches of plants. It should start as small water-soaked spots, which gradually expand into large black spots in an irregular ring shape. The diseased parts continue to expand until they rot. During the breeding process, pay attention to promptly draining stagnant water and reducing humidity. If any disease is found, remove it promptly and you can also use pesticides to spray it. Photinia fraseri leaf spot disease and its controlLeaf spot disease mainly harms the stems and leaves of the plant. Small spots appear first and then gradually expand. The front of the leaves are reddish brown and the back of the leaves are yellowish brown. If leaf spot disease is not treated in time, the entire plant will die. Clean up fallen leaves in time to eliminate pathogens and spray pesticides for prevention and control. Photinia fraseri aphids and their controlAphids will gather in groups on the young leaves and tender branches of Photinia fraseri, and use their thorny mouths to suck the juice and nutrients of the plants, causing the leaves to curl up and affecting the ornamental value of the food. The harm they cause in the dry season is very great. Photinia fraseri scale insects and their controlScale insects mainly harm the apical buds and branches of Photinia fraseri. When the scale insect pests are serious, they will even spread all over the branches and leaves of Photinia fraseri, affecting its ornamental value.
|
<<: Diseases and Pests of Roselle and Their Control
>>: Prevention and control of common diseases and pests of Phytolacca
1. Is it an Elaeagnus angustifolia tree? Sea buck...
Although asparagus fern is very common, it is a s...
Rubber tree soil change time It is best to change...
1. Trim the leaves The leaves of spider plant nee...
1. Pot soil selection When planting and caring fo...
Plum is a very important economic fruit tree. The...
The fully open-air bathroom has lotus flowers out...
How long is the growing season for spring potatoe...
Hydrangea Growth characteristics: It likes humus-...
Mulberry planting conditions Mulberries have a st...
Rose acclimatization time The time it takes for r...
Bayberry germination environment Bayberry prefers...
Is Millennium Fruit a fruit or a vegetable? Mille...
1. Excessive watering 1. Reason: Rose is a flower...
Growth habit Phalaenopsis likes to grow in a cool...