Prevention and treatment of cycad leaf spot

Cycad leaf spot is caused by pathogenic fungi of white iron leaf spot and cycad leaf blight, cultivated soil is thin, cultivation environment is not ventilated, light transmission conditions are poor, soil viscosity is heavy, poor drainage causes root rot, or winter cold measures are not Good cold injury, are easy to cause leaf spot disease. The disease usually occurs from April to October every year, and the period of serious harm is from August to September. There are mainly two kinds of prevention and treatment measures for cycad leaf spot:

Cultivation management measures

Use well-drained, loose, fertile acidic sandy loam for planting, apply appropriate amount of cake fertilizer, and regularly water 0.5% ferrous sulfate solution. In winter, cold measures should be taken early. After the new leaves are opened in spring, the old leaves and diseased leaves of the plants should be cut off in time.

Chemical control

In the early stage of the disease, 500 times solution of carbendazim WP or 800 times of thiophanate-methyl WP can be sprayed. The number of spraying can be determined according to the disease, and it is usually sprayed every 10 days. For the leaf spot caused by root rot, the diseased plant can be rooted out, the severed foliage is cut off, the attached soil and root rot of the root are removed, and the root is soaked in a solution of 0.1% potassium permanganate 5 -10 minutes. Then rinse the roots with water, put the roots up in the sun for 30 minutes, place them in the cool place for two days after drying, and then spray and disinfect the foliar and potting soils with 0.1% potassium permanganate solution. Better control effect.

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Chemical name: Polyalkyleneoxide Modified Heptamethyltrisiloxane

Silicone adjuvant is a super-spreading surfactant based on a trisiloxane ethoxylate.

Spray Adjuvant lowers the surface tension of spray solutions, beyond that which is achievable with conventional adjuvants.

And,Silicone Surfactant promotes rapid uptake of agrochemicals into plants via stomatal infiltration.

spray adjuvant is nonionic in nature, making it useful with a broad range of agrochemical formulations.

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