Prevention and treatment of iron rot disease

The cycads are not only vulnerable to white spot disease, leaf blight, and coal rot. They also have a rot disease that is worthy of attention by flower lovers.

Causal causes of iron rot include decay of bulbs and rot of the root system. Although the incidence of this disease is not high, but the consequences are serious. Those who are light need to recover for months, and those who are severe are rotted to death. One of the main reasons for the onset of illness is that watering is excessive or continuous rain does not take shelter. The second is too much fertilization, especially the application of raw fertilizer and concentrated fertilizer. The third is that the winter entrants are too late or the room temperature is too low and are affected by freezing injury. Fourth, traumatic injury occurs artificially or accidentally.

Precautionary Measures Prevention of iron rot is the most fundamental step in improving cultivation conditions and strengthening day-to-day management. Such as improving the soil, increasing light, pay attention to ventilation; timely and appropriate amount of watering and fertilization, do not apply concentrated fertilizer and raw fertilizer; winter into the room to be timely, to prevent cold attacks. In particular, supporters should enhance their awareness of disease prevention and disease resistance. Always observe the growth of the plants and find that they are in a morbid state and take timely rescue measures. Plant pots or basins, use carbendazim or tetromycin, chlorothalonil, thiophanate-methyl for sterilization and sterilize the soil and manure.

Rescue method in the cultivation and management of cycads, if found in the top of the stem is sunken, it is the symptoms of stem rot, stem rot generally begins from the center of the pith, and gradually spread to the surrounding tissue. If it is found that the leaves and leaf stems turn yellow or even dry coke, it may be leaf blight, and it may be root rot. If accompanied by stem rot, it can be concluded that the root rot. Regardless of stalk rot or root rot, or both, the entire plant should be lifted from the basin and the soil should be removed and treated separately according to the specific conditions.

1 In the original soil cultivation, only the top of the stem was rotted and the area was small. The root system was intact. The decayed part was scooped out with a knife until it reached fresh tissue. After disinfecting the original basin with potassium permanganate, the plants were still planted in pots, and the soil was only cultivated to the roots. The bulbs were dried after being coated with sulfur powder until the stems were slightly wilted and the gums no longer flowed out. Afterwards, the amount of water needed to be increased from less to more, and gradually transferred to normal management. Generally only suckers do not grow.

2 River sand cultivation, such as partial or complete root rot, but the bulbs are good, can be cut off leaves and leaf stems, remove the rotten roots, soak in the antiseptic solution for 1-2 hours and then air dry, implant with potassium permanganate In the dripping river sand, the moisture should be dry and not wet. After rooting, the soil is replaced and the soil is conventionally maintained.

(3) The stems and roots of the river sand borer were rotted, and the bulbs were cut into 2-4 pieces, dried and then used to eliminate the poisonous river sand cuttings. Half of the stem is inserted into the sand, half exposed and placed in astigmatism or half shade. The moisture is suitable for semi-dry. After the buds have been produced, they can be planted, or they can be made of cycad bonsai material.

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