Clivia root rot disease control, edible fungi pest control

The root rot disease of Cymbidium may occur all the year round, but it is mostly occurred in summer, which is mainly caused by the specific environment of high temperature and humidity and the lack of maintenance knowledge. For example, some people raise magnolia in porcelain pots, plastic pots or purple sand basins for the sake of beauty. After summer watering, because the permeability of the basin is poor, the air circulation is difficult, the breathing of the root is blocked, resulting in rotten roots; although some orchids are planted in the mud basin, but for fear of lack of water and fertilizer in summer, the topsoil of the basin is watered when it is dry (the actual potted soil is still wet). And often apply thick fertilizer. In the case of root breathing suffocation, thick fat and burning roots, coupled with the rapid reproduction of some harmful bacteria in summer, it will cause rotten roots.

No matter in the vegetative growth stage (from seedling stage to pre-flowering stage) or in the reproductive growth stage (after flowering), the suitable growth temperature is 5-25 ℃. Because of the lack of necessary equipment, the general family should proceed from the actual situation, in addition to taking measures such as shading, ventilation and cooling in summer with high temperature and humidity, we should strengthen root maintenance in summer from the point of view of controlling its growth (making the plant dormant or semi-dormant. This is conducive to the growth and development of other seasons). The method is:

First, you need to use a mud basin to raise magnolia.

Second, no fertilization or less application of light liquid fertilizer in summer

Third, control watering in summer and insist on never watering until it is dry. In order to prevent the summer water from stuffing the roots, the flowerpot can be buried in a large wooden box filled with wet sawdust (no watering in the basin). After that, it is often checked to see sawdust dry to supplement water spraying.

In case rotting roots occur inadvertently, they should be rescued quickly. That is, first knock out the rotten root magnolia from the basin, remove the soil, cut off the roots, wash the roots with clean water, then smear the rotten roots with potassium permanganate aqueous solution, and then wrap all the leaves with white paper, exposing the roots to the sun, basking in the sun for half an hour, using ultraviolet rays to kill germs. After the treatment of the above methods, if only a few roots of the diseased plant rot, they can be directly planted in the sterilized nutritious soil, and the growth can be restored after less watering in the first half of the month; if more than half of the roots of the diseased plant rot or all rot away, it should be planted in a basin filled with fine sand and sprout new roots in a cool place, and the new roots will grow in about two months, and after changing the nutrient soil, normal management can be carried out.