Ambrosia, from the Latin Ambrósia, is an annual or perennial plant from the Asteraceae family. The plant is included in the list of quarantine herbs, limited in Russia. It is relatively common in the middle zone, grows abundantly in the chernozem zone.
The description of this plant may vary slightly depending on the species. The harmful plant has a light or dark green aboveground part. The height of the grass can vary from 20 cm to 2 m. The root system of the rod type penetrates deep into the soil by 3-4 m.
This fairly common plant is propagated by seeds. Adult ragweed is able to form about forty thousand seeds with a high percentage of germination, which complicates the weed control. The period of mass shoots falls on the period from May to June, and flowers that do not differ in attractiveness are formed in the last decade of July. Flowering continues until significant autumn cooling.
In the genus Astro, to which ragweed belongs, about fifty species are included. Most of them are widespread in North America, but in recent years many varieties have been introduced into other countries. Some species are found in large quantities in Ukraine and in the southern regions of our country. On the territory of Russia, four types of malicious quarantine weeds are most common, clogging the crops of almost any crop.
|View name||Latin name||Characteristic and Description||Bloom|
|Leaf Ambrosia||Ambrosia artemisiifolia L.||The upper part of the leaves is green and almost bare, and a grayish-green short pubescence is present below. The height of the branching aerial part can be 20-200 cm||Flowering from July to October. Baskets are unisexual, small, multi-flowered, collected in general, male and female racemose inflorescences. The receptacle has bracts|
|Ambrosia is tripartite||Ambrosia trifida L.||1-3 m high, with a straight, furrowed, branched and coarse-rough stem with opposite and petiolate leaves, monoecious plant||Men's baskets of a multifloral type, small, women's baskets of a single-flowering type, larger, located in the leaf sinuses or at the base of male inflorescences|
|Holosome ragweed||Ambrosia psilostachya DC.||The plant is bluish-green in color, due to the presence of dense pubescence. The stem is straight and furrowed, branched. Plant height within 50-150 cm||Flowers in baskets, gathered in loose brushes, men's baskets of multi-flowering type, small, women's baskets of single-flowering type|
|Ambrosia vulgaris||Ambrosia elatior||In appearance and shape of the leaves resembles common wormwood with short-leaved or sessile, almost whole leaves||Inflorescences are represented by baskets with unisex stamen flowers, collected in complex, spike-type inflorescences|
Ambrosia is found in settlements, often grows in wastelands and fields, can appear near trees and in roadside forest belts, as well as along roads.
This is an annual weed grass, the natural distribution of which is North America. In recent years, Ambrosia elatior and other varieties are found almost everywhere in our country, causing significant damage not only to crops, but also to human health:
Thus, the harmfulness of ragweed in areas of mass distribution of weed is expressed in lower crop yields, hindering the process of harvesting and clogging of plantings, as well as deteriorating people's health.
It should be noted that ragweed and tripartite ragweed are typical annuals, this somewhat simplifies the control of weeds, but Ambrosia holomechatelnaya is a perennial species, and the destruction of this weed will take longer.
Fighting Ambrosia is quite difficult, and getting rid of it in a short time will not work. Weed control includes both agricultural practices and the use of strong and most effective chemicals:
One of the most effective ways to kill Ambrosia is to use the latest generation of herbicides:
Also, if necessary, Ambrosia should be removed from uncultivated plots, exclusion zones and vacant lots adjacent to household plots or garden plots. With a timely and competent weed control, there is a chance that it will not damage your crops.