Dryopteris Dryopteris disease-leaf blight

symptoms

Scale insects are common pests of Adiantum fern, which occur easily in warm, humid and poorly ventilated conditions. When the disease occurs, white protrusions can be seen on the leaves, and the leaves will droop and wither. When the disease is serious, the whole leaves will be yellow.

control methods

Adiantum leaves more, it is difficult to inspect each leaf scale insects, so found scale insects directly cut off the leaves.

The pesticide control can be applied to the soil around the root of the pesticide (sold in the flower and bird market), usually 2 to 5 grams of 10 to 15 cm. Or spray omethoate emulsifiable concentrate 1000 times solution when the disease occurs, spray once every 5 to 7 days, and spray continuously for 2 to 3 times.

Control of Adiantum asiatica diseases

Adiantum capillus-veneris L., Adiantaceae, perennial herbs, 0.1-0.6 m tall. Because of its slender stems and color like iron wire, it is named Adiantum. Adiantum is also an indicator of calcareous soil. Due to its fear of dryness and strong light, it must be placed in a place where there is no direct sunlight.

Widely distributed in Taiwan, Fujian, Guangdong, Guangxi, Hunan, Hubei and other places, often born in the limestone beside the stream or limestone cave bottom and drip rock wall, for calcareous soil indicator plants, elevation 100-2800 meters.

Potted Adiantum fern often has leaf blight, which can be controlled by Bordeaux mixture at the initial stage, or by 70% methyl thiophane 1000~1500 times solution when it is serious. If scale insects harm plants, 40% omethoate 1000 times solution can be used for control. What is the role of iron fern in iron fern?

At the beginning, Xiaobian first introduces some of the functions of Adiantum, and then introduces some varieties of Adiantum.

Medicinal value: Adiantum fern can be used as medicine, can clear heat and detoxify, and diuresis, diuresis, can also be used for dysentery, etc., usually lung heat cough, hepatitis, snake bite, traumatic injury, etc. have good therapeutic effects

Ornamental value: Adiantum love shade, environmental adaptability is strong, cultivation is very easy, very suitable for indoor perennial potted culture viewing, is a small potted plant, then we placed on the desk, tea table above, and a little larger potted plant we used to decorate the aisle or living room. And Adiantum leaves or a good material for cutting leaves and dried flowers, with flowers in the bottle, there is a good ornamental value of beautifying the home environment.

Introduced the work of Adiantum, now Xiaobian will introduce some knowledge of different varieties of Adiantum and attach different pictures of Adiantum for everyone to distinguish.

Adiantum flabellulare: leaves fan-shaped to irregularly broad-ovate, with 2 - 3 palmate branches to bird-footed dichotomous branches, middle pinnae the largest, pinnae with some short stalks.

The leaves are linear and lanceolate, about 10 to 25 cm long, and the tip is often extended into a whip shape, which can take root on the ground.

Adiantum cuneifolium: leaves are broadly triangular, with 2 - 4 pinnately divided leaves, lobes rhombic or oblong.

Adiantum is widely distributed in Africa, America, Oceania, Asia and other warm regions, and widely distributed in Taiwan, Sichuan, Jiangxi and other warm tropical regions. When we cultivate Adiantum, we pay attention to its pest control. The disease of Adiantum is mainly leaf blight. In the early stage of disease, we can spray Bordeaux solution for 1~ time to control it. The pest is mainly scale insects. We can use 50% malathion diluted 1500 times, or 2.5% deltamethrin diluted 3000 times to spray.

There is also in the usual Adiantum leaves easy to appear brown burnt edge, we have to think about whether we did not put Adiantum in the shade environment, is not directly exposed to sunlight, if there are these problems we have to put Adiantum in the semi-shade cultivation, and the fermentation of leaves cut off, but also timely spray on the foliage and surrounding ground, and try to avoid being stimulated by strong light again.

Adiantum in improper maintenance, leaves will also be black, there may be too shade, long time did not see the sun, although Adiantum shoot summer heat, can not be exposed to the sun, but also can not be all shade, in summer when the best placed under the shade and trees or at night moved outdoors, during the day and then moved back indoors. In winter, you should see enough light. There may also be improper fertilization caused, Adiantum like rich humus sandy loam, need sufficient fertility, we can re-culture some charcoal powder and brick dust in the soil rabbit, improve

Summary: The above are some of the precautions for Adiantum cultivation summarized by Xiaobian for everyone, as well as the value, etc., as well as the pictures of Adiantum attached to Xiaobian. Can you not help but want to raise a few plants? What are you hesitating about? It's time to act.

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