Архивы control of diseases • Roses and Garden

Diseases and Pests of Begonia

admin — Sat, 04 Jul 2020 07:26:43 +0000

Begonia is one of the favorite indoor plants. This is due to beautiful flowering and attractive leaves. In order for the plant to remain healthy and strong, efforts must be made. Diseases and pests of begonias are the causes of the untidy and fatal state of these plants. Diseases of ornamental and deciduous begonias Most often,feel unwell due to improper care. Therefore, it stops developing. Next, we give you a list of common symptoms and causes of such plant behavior. Leaves curl and dry around the edge that appear because begonia is kept in too dry conditions. She lacks moisture

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Mealy of plants

admin — Mon, 08 Jun 2020 06:37:16 +0000

Dew Powdery Mildew is a fungal disease caused by the microscopic fungi Erysiphales. Their powdery white mycelium appears on leaves, buds or fruits in most cases at the beginning of summer. What does mildew look like On the leaves of the affected plant, appears white coating of mycelium. Form on it drops of liquid after the spores mature. Most often, you can see such a picture on the leaves and young buds. Another disease affects the petioles, stalks and fruits. Powdery mildew begins in most cases with those parts of the plant that are closest to the ground. If you

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Diseases and Bacteria

admin — Mon, 08 Jun 2020 04:41:11 +0000

Bacteria on the Earth are everywhere and in huge quantities. There are beneficial bacteria, and there are pathogenic ones. Useful ones help digest food, fix nitrogen in legumes, help decompose the remains of plants and animals, are used in sewage systems, etc. Pathogenic bacteria cause severe and often fatal diseases in plants, animals and people. Two words from the history of bacteria. The first bacterial disease was anthrax caused by Bacillus anthracis. She provoked a plague of cattle and sheep in 1876. In 1877-1885, the Erwinia amylovora Burrill bacterium hit apples and pears. This bacterial disease is called a “bacterial

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BLACK SPOTTING OF ROSES

admin — Sun, 07 Jun 2020 10:50:07 +0000

Black spotting on roses is one of the most annoying diseases of roses. This disease is able to resist treatment for a long time. She disappears for a while and then reappears. She, like powdery mildew, is an all-weather and ubiquitous disease. Another name is Marsonina Rosae. How to recognize black spotting on roses Black spotting on roses provokes the fungus Marssonina rosae. Basically, this infection appears on the leaves, and sometimes on the shoots. In the beginning,form on the upper side of the leaves purple-white spots. Then they become almost black. They have a round, radiant shape. Over time,

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BOTRYTIS, MOSAIC & WILT OF ROSES

admin — Mon, 22 Apr 2019 15:36:47 +0000

This article will discuss rose diseases such as: botrytis, mosaic of roses, wilting. Botrytis Or gray rot, a disease that develops under shelter in the winter with frequent temperature changes. Symptoms of the disease are brown spots on the shoots and fluffy gray mycelium. In summer, it suffers from buds and flowers, on which brown specks appear. After some time, they ′ ′ grow ′ ′ and become covered with gray mold. Contribute to rot thickened planting, compacted soil, excess nitrogen fertilizers. It is possible to increase the resistance of plants of roses to gray rot using fertilizing with trace

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Bacterial Burn and Root Cancer of roses

admin — Mon, 22 Apr 2019 15:24:08 +0000

In addition to fungal diseases, roses can be sick with cancer. There is bacterial root cancer and stem cancer or bacterial burn. Bacterial root cancer The first disease is caused by the bacterium Agrobacterium tumefaciens. In this disease on the roots and at the base of the stalks are formed growths that harden, and eventually rot. As a result, the rose bush dries out. Infection occurs through the wounds of the roots received during planting or transplanting. It occurs more often on heavy clay soils with alkaline reaction of the medium and with an excess of nitrogen. The disease disrupts

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POWDERY MILDEW & HOW TO WIN

admin — Thu, 15 Nov 2018 19:49:36 +0000

The powdery mildew of roses usually appears in the summer or early autumn. This disease causes the parasitic fungus Sphaerotheca pannosa, which affects all the terrestrial parts of the plant – thorns, buds, young leaves and shoots. In the middle lane, the first signs will appear in the middle of May. A dirty white ′′powder′′ raid appears on the affected organs. In roses, photosynthesis deteriorates, leaves change shape, dry out and fall off. The buds of flowers do not open, but dry up and fall away. Plant shoots die off, and the plant itself looks depressed. Weakened plants may die

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