2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
Spinach is a wonderful and very healthy plant. Its juicy leaves are especially useful for children, adolescents and women, because spinach is very rich in iron, and iron, in turn, is the most important component of hemoglobin. A long time ago, this amazing plant began to be cultivated in the Middle East, and many centuries later it appeared on our tables. More and more often summer residents grow spinach on their backyards. And one of the priority tasks of every summer resident is to protect spinach from destructive diseases. To protect this useful plant from possible ailments, it is extremely important to understand how various diseases manifest on it
Peronosporosis on spinach
The causative agent of this unpleasant disease can affect spinach at any stage of its development. On the upper sides of the developing leaves, well-visible yellowish specks are formed, and on their lower sides you can see a grayish conidial mushroom bloom.
Peronosporosis is especially massive in the case of cold weather, as well as with high air humidity.
Fusarium - spinach root rot
This ailment is considered one of the most harmful. Its pathogens are mainly pathogenic fungi from the genus Fusarium. However, some other mushrooms also contribute to a large extent. Fusarium root rot affects both tiny seedlings and young spinach, which has just entered the stages of peduncle formation and flowering, with equal force. And the harmful disease reaches its peak by the time the seeds begin to ripen.
Infected spinach seedlings have a dull, dark green color. They begin to lag far behind in growth, and after a while they completely die. Spinach leaves, which have entered the flowering phase, lose their turgor and, quickly turning yellow, wither. Moreover, both the yellowing process and the wilting process start from the lower leaves of the rosettes. As for the spinach root system, it is affected by rot with unequal intensity or dies off completely. Nevertheless, a small section of the main root is still preserved. And spinach with partially damaged roots is able to grow and develop for a long time without any manifestations of the ill-fated disease on ground organs. The spread of infection in this case occurs mainly with the seeds.
To a large extent, the development of root fusarium rot is facilitated by an increased soil temperature.
Cucumber Mosaic Virus
Oddly enough, this cucumber attack affects growing spinach as well. On the plants it attacks, symptoms of curl and chlorosis can be noticed. Diseased spinach becomes more susceptible to damage and a number of other viruses.
Ascochitosis
On the leaves of spinach affected by ascochitosis, angular or rounded specks of brownish color are formed, densely dotted in the center with destructive mushroom pycnidia.
Cercospora
On spinach, the formation of yellowish or pale green specks of unequal sizes begins. And in their centers, you can see dark foci of fungal sporulation. In this case, curved colorless spores can be both fusiform and cylindrical. After some time, the spots on the plants merge, capturing fairly solid areas.
Anthracnose
This attack manifests itself on the petioles and leaves of spinach in the form of dirty gray or dark specks of an indefinite shape. And in the center of each speck you can see little black, slightly raised pads.
Ramularia spinach
On the spinach leaves, the formation of rounded, fringed specks of light brown shades is noted. Affected plants begin to stagnate and may even die.
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