Pest control of hyacinths

Staphylococcus nucleus damage seedlings and bulbs, broken colored petals disease harm flowers and stem nematode damage above ground. When the bulbs are collected, the injured or diseased bulbs are removed and the bulbs are ventilated indoors when the bulbs are stored.

Disease prevention and control of hyacinths should be based on the principle of strengthening management, taking active prevention, and comprehensive prevention and control. Due to the short growing period of hyacinths in the greenhouse, diseases mainly occur. The common diseases of hyacinths are bud rot, soft rot, sclerotia, and viral diseases. Before the planting, the matrix is ​​strictly sterilized, the bulbs are selected and sterilized. During the growth period, the triclosan or chlorothalonil is sprayed one time every 1000 days. The use of these bacteria alternately can inhibit the spread of germs to some extent. Strictly control the amount of watering, strengthen ventilation management, control the relative humidity of the air in the environment, and remove central diseased plants in a timely manner, which can significantly reduce the incidence rate.

Grey mold

In the early stage of disease, the tip of the diseased leaf discolored and the leaf blade shrivelled and rotted. In cold and humid conditions, flower parts also rot. At the later stage of disease, the diseased part has gray mold layer and black sclerotia. Pathogens use sclerotia to overwinter in diseased bodies and soils, and conidia are produced when conditions are appropriate. Conidia spread with wind and rain to infect. Low temperature and high humidity are conducive to disease occurrence.

Control methods

Reduce the source of infection: timely removal of diseased flowers, diseased leaves, and centralized destruction.

Chemical control: At the beginning of the disease, spray 1:1:100 Bordeaux mixture, or 65% dexamethasone wettable powder 500 to 800 times, or 50% benzene to wettable powder 1000 times, or spot rust 800 to 1000 times spray control.

Rhizomatosis

Root hype disease is also known as root nodule disease. When the roots begin to appear normal, they grow to a certain degree, which results in a small white tumor. The growth is weakened, and the floret dry rot sometimes occurs, which affects the growth and development. In severe cases, the whole plant is dead.

Control methods:

(1) Strictly sterilize and sterilize the storage period, pay attention to the enhancement of ventilation, diligent inspection, and diversion, and find out that the diseased plants have been burnt out in time.

(2) Strictly carry out soil disinfection and sterilization, not continuous cropping, and no repeated application of cultivated soil.

(3) The diseased plants were found to be cleared in time during the cultivation and the soil was sterilized.

(4) Strict quarantine, not to make the diseased ball strain eight gardens.