Архивы Diseases of roses • Roses and Garden

WHO IS GUILTY: REASONS FOR PLANT DISEASES

admin — Tue, 09 Jun 2020 05:29:33 +0000

As people and animals get sick, so do plants. In order to maintain plant health, it is necessary to find ways to combat plant diseases that can destroy large areas of green space. Many branches of science are involved in the creation of effective drugs for the control of ailments of ornamental and fruit plants. These are biochemistry, biotechnology, soil science, genetics, selection, meteorology, mycology, virology, chemistry, physics, statistics, etc. All of them contribute and help in the study of plant diseases. Combines all this knowledge with plant pathology. The most common diseases in plants are bacterial wilting, rust, spotting,

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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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APHIDS & CICADAS ON ROSES

admin — Sat, 24 Aug 2019 14:56:09 +0000

On roses, very often there are different “guests”. And it doesn’t matter whether indoor roses or street roses, pests do not give preference to any particular roses, but “eat” everything that comes across. Such a voracious insect is aphids on roses. It happens that in the evening you saw your roses beautiful, full of health, and in the morning the tops of the shoots are covered with a continuous layer of greenish muck. Aphids on roses how to recognize and combat aphids on a rose – small sucking insects, 2-3 mm long,this pest is a greenish-yellow-rastlitelnitsyFemales have wings and fly

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POWDERY MILDEW ON ROSES

admin — Mon, 22 Jul 2019 07:53:39 +0000

We humans do not like to be ill. Similarly with plants, only they can’t tell us about it. There is such an all-season disease in our favorite plants – powdery mildew on roses. All-season because roses are grown throughout the year in the open and closed ground. The truth is that it can easily destroy a flower if we don`t respond in time. How to find powdery mildew on roses Powdery mildew on roses is the result of the attack of the fungus Sphaerotheca pannosa Lew. var. Rosae Voron. This insidious disease develops quite quickly and can migrate to healthy

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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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