Root and petiole celery are also affected by pests, like any other vegetable.
To ensure good crop quality, it is important to identify the problem in a timely manner and develop a plan to deal with uninvited guests.
And this article will help you with this.
The summer period of the pest usually falls in the last decade of May and more often it moves to celery from the overgrowth of hogweed.
Then the female flies lay eggs in the folds of the leaves of the plants, because of which small tuberous spots form on them. Larvae hatching from them eat the leaves from the inside, leaving large tunnels in them.
As a result, celery leaves and petioles acquire a bitter taste, and root crops grow small and not juicy.
In the middle zone of Russia, one generation of borsch flies has time to form in a season, and in the more southern regions – as many as two. The pest spends the winter in the ground.
Methods for the prevention and control of borsch fly include:
- strict observance of culture on the site;
- regular liming of the soil – especially if it tends to acidify;
- free planting of plants in the garden;
- the systematic destruction of seedlings of hogweed and other weeds of the same family;
- deep autumn digging of the soil;
- growing celery in joint plantings with onions – its smell perfectly repels borsch flies.
She also leaves for wintering in the topsoil.
A fly wakes up in the spring when stable weather is established. Then she lays tiny whitish eggs next to the young plants of the umbelliferous family – carrots, celery, and so on.
The pest larvae actively feed on celery roots and leaves, which may cause it to die.
For a season, a carrot fly brings two generations: in June – July, and also in August – September.
Preventive measures from the fly include weed control, timely balanced dressing, and frequent loosening of the soil between the rows. In the first week of June and early August, it is also recommended to dust the soil around the plants twice or thrice with a mixture of tobacco ash and sand, taken in equal proportions.
For better effect, sand can be replaced with mustard powder. The treatments are carried out with an interval of 7-8 days, while a linear meter of the garden leaves about a tablespoon of such a mixture.
The pest is often found in the northwestern region of our country.
He spends winter on conifers, and in spring and early summer, he continues to feed on pine needles. After this, the leaf flap switches to the celery and begins to suck the juice from its leaves. As a result of this, they are deformed, and the plants become depressed.
You can deal with the leaf cloud by the same methods as with the carrot fly.
Bean aphid is the largest aphid species, which also poses a serious danger to celery plantings. This pest takes only 1-2 weeks to develop one generation, so timeliness is important in the war with it.
As soon as you notice even a small amount of aphids on celery, immediately proceed with active actions.
Spray the plants with infusion or decoction of tomato or potato tops, dandelion or yarrow. Alternate treatments with herbal infusions with sprinkles of infusion on the peels of any citrus.
Citrus infusion is prepared as follows: the peel of an orange , mandarin or lemon is poured with ten parts of water, insisted for 3-5 days and filtered.
To prevent female aphids from laying eggs, plant more nasturtium and savory around the celery. By the way, savory leaves can then be dried and enjoy the delicious healing tea all winter .
Celery also suffers from many infectious and non-communicable diseases. How to protect plants from all misfortunes, you can read in this article .