Planting Technology Lists
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What are the common diseases and insect pests of pitcher plants?
Pitcher plants grow slowly at seedling stage, and there are often diseases and insect pests such as red spiders, aphids, leaf spot, anthracnose and black spot, especially under the conditions of poor ventilation, too shade and low temperature. In addition to the need to timely regulate the growth environment conditions, it should also be timely spraying control.
2018-12-16 -
What are the common diseases of Petunia?
1. Powdery mildew. After the disease, the diseased leaves were removed in time, and 75% chlorothalonil 600~800 times solution was sprayed at the initial stage of the disease. 2. Leaf spot disease. Avoid bruising leaves as much as possible, and pay attention to preventing wind damage, sunburn and freezing damage; timely remove diseased leaves and burn them, and pay attention to removing fallen leaves
2018-12-16 -
What should I do if I hang the golden bell upside down?
The pest that hangs the golden bell upside down is mainly red spider. The best control method is to put the plant in a well-ventilated place and spray the whole plant, especially the back of the leaves, with heavy water. This is due to the dry indoor air, the eggs hatch into adults in a suitable environment and then directly harm the plants, but mites are afraid of dampness.
2018-12-16 -
How to prevent and cure red leaf spot of Zhu Ding?
If Zhu Dinghong is not properly maintained, leaf spot disease will occur easily in late autumn and early winter, and leaf tip, leaf surface and leaf edge will get sick. At the initial stage of the disease, there are small purple-brown spots on the leaves, which will expand into brown and irregular spots if not controlled in time, then mottled withered yellow, and finally grayish white.
2018-12-16 -
White orchids suffer from yellowing disease how should do?
White orchids like acid soil, its chlorosis is caused by alkaline soil or alkaline irrigation water. Symptoms are yellow leaves, black roots and rot. The control method is to spray wine leaves with 0.2% ferrous sulfate aqueous solution. Spray every 5~7 days, and often apply 0.5% ferrous sulfate aqueous solution
2018-12-16 -
What are the common diseases of alpinia officinalis?
Alpinia officinalis is often harmed by leaf blight and brown spot. At the beginning of the onset of leaf blight, 200-fold Bordeaux solution was sprayed every 7-10 days for 3 times. 1000 times of thiophanate methyl can be used to spray wine when brown spot occurs.
2018-12-16 -
How should Qin leaf banyan get leaf spot disease?
Short-term temperature fluctuations and too much water in the dormant period will cause leaf spot disease, and the diseased leaves should be removed in serious cases. Control methods: timely removal of diseased tissue, centralized burning; rotation, indoor soil change; not suitable for plant spraying; spraying from the early stage of the disease to prevent the spread of the disease.
2018-12-16 -
Perforated brown spot of cherry blossoms
Symptoms and pathological changes: the disease mainly occurs in the growing leaves. During the onset of the disease, it gradually spread upward from the lower leaves, and began to grow needle-sized purple-brown spots on the leaf surface, and then the disease spot expanded into a new round brown spot with a size of 3-5 mm, and a light brown detachment was formed at the edge of the spot. Posterior macular exfoliation
2018-12-16 -
Green peach gummy disease
Symptoms and pathological changes: the disease occurred in branches, bark lenticels and injured □, cracks □ and other places, the initial part of the disease slightly expanded, brown, and then the flow of translucent milky white soft colloid, the phenomenon of glue flow was more serious after rain. The gel becomes sticky in the presence of air, yellowish brown, and becomes a hard lake-shaped glue when dry.
2018-12-16 -
Anthracnose of camellia
The symptoms and pathological changes were mainly harmful to the leaves. On the diseased leaves, there are round or irregularly shaped brown to grayish brown disease spots, the edges are dark or yellow halo, some of the disease spots are gray-white, leaf spots are sunken or have dark edges. Striated or scattered black spots on the disease spot.
2018-12-16