disease
There are two most common diseases. There is a kind called rust. This disease mainly occurs in autumn, and the specific period may be different according to the size of plants. It will harm the leaves of plants. At the beginning of the disease, brown rust spots will appear on the leaves of plants, and then they will slowly break and then emit some powdery substances. To deal with this disease, we can choose 95% sodium dichloride 400 times to spray it once every other week or ten days for two or three times in a row.
There is also a disease called root rot, which is more common when the temperature is high and there is a lot of rain. Especially at this time, it is more likely to induce this disease if fertilizers that are not fully decomposed or with strains are used. We can choose bordeaux mixture for spraying treatment. If it is a seriously infected plant, we should take soil to eradicate it in time, then burn it and disinfect the soil with lime.
insect pest
The first kind of pest is called a worm. To deal with this pest, we can spray 50% carbaryl in winter (because this is the incubation period of pest eggs). If we want to deal with adults, we should use 90% trichlorfon 800 times in early May.
The second pest is the ground silkworm, which can threaten the stems of plants and lead to the death of the whole plant. To deal with them, we must first dig deep into the soil or weed, so that the pests can be turned to the surface or buried deep, and then the sudden change of the environment will cause the death of the pests. Of course, if the quantity is small, manual capture will do.
Pest control of fennel
Fennel, also known as fennel, coriander, etc., is planted all over the country; The height of the plant is between 0.4m and 2m, the flowering period is from May to June, and the fruiting period is from July to September. The flowers are very small and yellow. Friends who have cooked should know that fennel is both a seasoning and a vegetable, and its fruit is still blindly Chinese medicine. Let's talk about the prevention and control of pests and diseases in daily farming.
disease
powdery mildew
At the beginning of the disease, white spots will appear on the leaves of plants, and then they will gradually expand. In severe cases, the whole leaves will be necrotic.
gray mold
This disease mainly harms the leaves and petioles of plants, and when it occurs, it will cause the leaves and petioles of plants to rot and rot.
root rot
As the name implies, the main damage site is the root, which will directly lead to the death of the seedlings during the seedling period, and the disease will lead to the root rot in the mature stage, and the plants can be pulled out of the pot soil with a slight drag. In severe cases, it will also cause the whole plant to die.
Sclerotinia sclerotiorum
This disease mainly harms the petiole and stem of plants. After the disease, it first softens and then slowly decays.
viral disease
It can harm the whole plant, in which the leaves will wrinkle after illness, and it will also hinder the normal growth of the whole plant and affect flowering and fruiting.
insect pest
aphid
This pest will start from the leaves of plants, and its reproduction speed is very fast. If it is not stopped in the early stage, it will spread all over the whole plant in a very short time. In severe cases, it will cause viral diseases of plants, thus causing the whole plant to die.
Prevention and cure method
When pests and diseases are found, they can be cleared manually at the initial stage, and then sprayed with fungicides, etc. In the middle stage, they should be sprayed with special drugs, and in the later stage, the parts with serious pests and diseases should be cut off first, and then the pots and soil should be changed to replant, and then the drugs should be sprayed for control.
First of all, we should improve the breeding environment, pay attention to cooling at high temperature and increase the air circulation.
When watering daily, you must not make the soil accumulate water or keep the soil in a wet state for a long time.
Pests and diseases of carambola and their control
In the cultivation and management of carambola, diseases and insect pests such as red spot, anthracnose and fruit fly often occur. Let's take a look at the pests and diseases of carambola and the corresponding control methods.
Diseases of carambola and their control
Red spot disease
Harm carambola leaves, the damaged leaves appear red and yellow spots, and then gradually expand, the color turns purple-brown to grayish brown, and even serious perforation will occur. Control methods are as follows:
Concentrate on burning diseased leaves to reduce the source of infection, and spray 70% thiophanate methyl 800-1000 times solution during the leaf development period of carambola shoots.
anthrax
It seriously harms the carambola fruit. When the fruit matures, the symptoms are obvious, and the fruit rots and emits a wine smell. The specific prevention methods are as follows:
Remove diseased fruit and fruit drop, and spray 70% thiophanate methyl 8oo-1000 times during the young fruit of carambola.
Insect pests of carambola and their control
Fruit fly control
For chemical control, 90% trichlorfon can be sprayed with 800 times solution. In terms of physical control, bagging can prevent its harm and achieve good results.
Bird feather moth
The pest mainly harms flowers and young fruits, and the peak of larval reproduction is from June to July. Control methods are as follows:
Spraying 800 times of 90% trichlorfon solution every other week or so before the carambola blooms and the small fruit turns its pedicel, and spraying for 2-3 times continuously.
Brown leaf roller moth with black spot
Larvae will burrow into the fruit core and eat the fruit, which will cause fruit drop. Control methods are as follows:
Remove the diseased fruit and bury it deeply, and spray 800 times solution of 90% trichlorfon for control.
Pest control of Rosa spinosa
This is a shrub plant of Rosaceae, mostly distributed in the north temperate zone. In China, it is planted in many provinces, such as Heilongjiang, Inner Mongolia, Shaanxi, Gansu and so on. In addition, it is also distributed in northern Europe and Japan. We may find it on sunny hillsides, forests or bushes. Our article mainly talks about how to deal with pests and diseases.
disease
The first disease is called black spot disease, which we are relatively familiar with, and many kinds of plants will be troubled by this disease. It can mainly harm the leaf parts of this plant. At the beginning of the disease, some small brown spots will appear on the surface of its leaves. As the disease gets worse, these small spots will gradually connect into some large circular spots, and their colors will gradually deepen. To prevent and cure this disease, we first need to clean the fallen leaves in time and cut off the diseased parts. Secondly, we can spray some medicines, such as Bordeaux liquid medicine. Of course, it is also very important to strengthen management, such as drip irrigation.
The second disease is called rust, which is also common. It may have a great impact on leaves and branches, and even cause most of the leaves to fall off and even die in severe cases. For this disease, it is necessary to strengthen supervision and try to take timely measures to spray the corresponding liquid medicine once every other week for three or four times in a row, which can be well suppressed.
insect pest
The first is the scarab, which is harmful to the leaves, flowers, roots and other parts of this plant, especially affecting the quality of flowering. To deal with it, we can use the method of light trapping and killing. If it's very serious, you'll have to spray insecticide.
The second kind is the thorn moth, which eats leaves, causing leaf damage. For this pest, we must first carefully check whether there are eggs on the branches, if there are, cut them off in time, and spray the liquid medicine such as Fuling emulsifiable concentrate.