Raise Chinese rose, blade is mildewy long shading, this is " gray mold " , here has a means of settlement!
Gray mold is a kind of disease that just produces easily in the environment with much wetter low temperature, be in commonly early spring when erupt easily. And Chinese rose contracts this kind of disease very easily, main meeting endangers the growth of petal, cause petal atrophy. Small today make up will take everybody to understand this kind of next disease.
1, what there is a few to have bubble state on petal is protuberant, this is the symptom that at the beginning of coming on, arises.
2, the bottom of petal is a little nigrescent, probable be the generation that brings about fungus insolates immediately after perhaps watering after rain.
3, there are a few white hairs on tender bud, and with the hand can easily erase, there still is Brown spot on petal, this is apparent gray mold symptom.
4, the symptom with a little atrophic and cankered lamina, there also is mildew layer of gray on blade, this mildew layer is grey mildew fungus.
5, plant has the appearance that spits water, probable because moisture complements too much,be, be illogical plus the space wind and illumination inadequacy bring about.
Because weather is damp,the generation of the gray mold of Chinese rose is greatly, illumination is insufficient, and air is not current cause the disease that caused thrips and fungus sex, just appeared accordingly gray mold. Once plant is affected, blade and petal can be differred the enroach on of degree. But also need not worry too, should treat only proper still can rescue.
1, gush medicine prevents and cure
The gray mold of Chinese rose is the disease that belongs to fungus sex, because this wants to use the drug of fungus sex to undertake only,prevented and cure to go, for instance the drug such as ester of bacterium of Zun of annulus of benzene aether armour, aether, Mi bacterium ester can be used, every other half month sprays go. If want the result a bit better, that adds Lin of the bug that nod Bi again, also can prevent and cure even thrips disease together so reach the designated position.
2, decrease water
Chinese rose gray mold is in temperature when inferior and the environment is wetter of easy generation, water because of after this spring disease is sent, can decreasing, measure soil conservation as far as possible dry. Otherwise moisture can let plant appear too much the phenomenon that spits water, and the condition that says water produces gray mold more easily badlier.
Vernal air temperature still is not very tall, pour spring chill to make difference in temperature of morning and evening very big, and vernal much overcast and rainy, illumination is insufficient also, because this wants little water, let soil slightly wet can.
3, use nitrogenous fertilizer less
Spring of a lot of people can give plant compensatory nutrient, conduce to growth nitrogenous fertilizer especially. But if use overmuch word, can allow plant excessive growth instead, cause blade thereby dense not leak is airtight, from cause bug disease more easily.
4, seasonable clip
If branches and leaves is too dense, space too cascade when want seasonable clip, avoid mutual keep out, close not leak, this can affect the branches and leaves inside to grow not only, still can produce disease. Because this wants the branches and leaves with seasonable too concentrated prune away, bask more next, maintain good ventilated sex, can reduce disease generation.
If the Chinese rose of your home also appeared the symptom of gray mold, so undertake preventing and cure according to the method above rapidly.
