Hello, what is the reason for the desert rose falling leaves and flowers? How to prevent it and what

Agricultural materials 365***, learn more about rooting, root rot, heavy stubble, soil transmission, Verticillium wilt, root rot, prevention and control of root-knot nematodes, microbial fertilizer, expanded fruit set, disease resistance and yield prevention and control methods!

Loquat is a highly adaptable fruit tree. It can be grown in the southern region. However, due to improper cultivation and management of fruit farmers, the disease occurred severely.

So, what diseases are prone to when loquat trees are planted? How to prevent loquat disease? Let's take a look!

1. Loquat trees are prone to diseases.

Anthrax mainly harms the fruit of loquats. In the early stage of the fruit, the lesions are light brown small dots, water-stained, and gradually become oval, dark brown, and the lesions are sunken, with small red dots growing densely on the top, and then small black dots until they rot. The fungus overwinters on the diseased fruit with mycelium and spreads by wind and rain the following year.

During the ripening period of fruits, the damage is serious in high temperature and rainy weather.

Microbial bacteria fertilize root boys to supplement organic matter; High resistance to heavy stubble, rooting and strong seedlings; Regulate acid and alkali, purify and repair soil; Improve the nutrient demand capacity of plants, promote rhizome expansion, reduce root rot, and increase yield.

Brown spot disease is a common disease in loquat planting, and the lesions are mostly on the front of the loquat, and the lesions are generally brown or dark brown. Gray spot disease is generally more susceptible to loquat fruits and leaves. The edge of the lesion is obvious, and the loquat branches dry up in the later stage, and the lesion turns gray.

Root rot is one of the most serious diseases affecting loquat trees, which occurs in both young and adult trees, and can cause the whole plant to yellowing and defoliation until death. Loquat root rot mostly occurs in the root neck and roots, and the cortex of the diseased part is soft, necrotic and rotten. In a high-temperature, high-humidity environment, a large amount of white mold will form on the surface of the diseased area.

Second, the method of loquat tree disease prevention and control.

Before planting, the seedlings and soil should be disinfected, and planted reasonably densely to control the light transmittance in the field. During the planting period, strengthen fertilizer and water management, avoid too dry and too wet, enhance tree potential, improve disease resistance, remove diseased leaves in the field in time, combine with organic fertilizer, properly plough the soil, and reduce the number of pests and diseases.

No matter what kind of disease occurs in loquat, in the early stage of the disease, corresponding prevention and control measures can be adopted according to the symptoms of loquat. Field flushing or drip irrigation microbial bacteria fertilizer root children diluted 300 500 times to control various diseases within a controllable range and prevent further expansion of diseases.

In short, the occurrence of diseases and insect infestations in loquat is related to the management of planting techniques and cultivation management of fruit growers. Therefore, if you want to plant loquat well, you need to take measures to prevent pests and diseases in advance. The above is about the occurrence of loquat diseases and prevention and control measures for reference only, if you have any questions, please leave a message in the comment area.

There are four main reasons why desert roses shed their leaves. One is water shortage, when there is a lack of water, the stems are soft, the leaves are yellow, and they fall off. It is necessary to water in a timely manner, especially in summer, and replenish water as soon as the soil is dry.

The second is caused by stagnant water, the soil has water accumulation, the roots will rot, and the leaves will also fall off when the roots are rotten, so the rotten roots should be cut off as soon as possible and re-maintained. The third is frost damage, it is not cold-resistant, and it is necessary to pay attention to temperature control in winter and move to a warm place. Fourth, insect pests can be sprayed with 500 times of 500 times of 50% tobuzin wettable powder.

Desert roses are very drought-tolerant, so they don't need to be watered too much and too often, which will generally cause it to rot its roots, and the leaves will definitely not be retained, and the leaves will definitely fall off, so we can water it once a week.

When flower lovers buy back a pot of desert roses, the breeding environment will change first. Desert roses bought from the flower market are originally seeds in a greenhouse with high temperature and humidity, but the environment in your home is very different from that in a greenhouse. When a desert rose moves from one environment to another, it first goes through a period of adaptation, at which point the plant becomes weaker and loses its leaves.

However, at this time, the fallen leaves of desert roses are relatively easy to recover, and as long as they are properly maintained, they can gradually recover in about a month.

The reason why desert roses lose their leaves may also be watered too much. Desert rose is a plant that likes dryness, it is more drought tolerant, but avoid wet water, so you must pay attention when watering, not too much too often, because if the desert rose is watered too much, it will cause water accumulation in the soil as much as possible. If you notice that the desert rose has lost its leaves, you can touch the root of the pancreatic cancer to see if it has softened, and the softening indicates that root rot may have occurred.

At this time, it is the leaf fall caused by excessive watering that causes water to rot the roots.

When cultivating desert roses, you need to choose sandy soil with good drainage, don't water too much daily, and keep the soil dry. If it is found that there are rotten roots, it should be treated in time, and the foliar damage will expand.

Desert roses fall because of improper light, temperature, fertilization, and watering. Therefore, during the growth period of flower buds, receive more sunlight every day, maintain the most suitable growth temperature of 20-28 degrees, apply phosphorus and potassium fertilizer every half month during the growth period, keep the potting soil slightly moist environment, and avoid water accumulation and fertilizer damage.

1. Improper lighting

Desert roses are lost due to insufficient light or direct light exposure, so they must maintain sufficient light conditions when they are usually cultivated, and receive more sunlight every day during the growth of buds to promote lush growth. If the light is relatively strong, it is necessary to properly shade to prevent the occurrence of sun exposure.

Second, the temperature is improper

Desert roses are not cold-tolerant, and if they are exposed to low temperatures for a long time, they will cause desert roses to bloom. Therefore, it is necessary to maintain a warm environment, the most suitable growth temperature is between 20-28 degrees, and when the temperature is too low, take measures to keep warm and keep warm to avoid frost damage to plants.

3. Improper fertilization

For example, phosphorus and potassium fertilizer can be applied every half month during the growth period, and in the dormant period in autumn and winter, the fertilizer should be stopped, and only phosphorus-containing fertilizer needs to be applied once before wintering. Each fertilization should be appropriate and not too much to avoid fertilizer damage.

Fourth, improper watering

If you water too much for a long time, it will cause the desert roses to bloom, so be sure to water it properly, for example, during the growing season, you can water it regularly and frequently to keep the potting soil slightly moist. In autumn and winter, watering is gradually reduced, and the potting soil is kept slightly dry, and the water temperature should be almost the same as the soil temperature.