In article the malicious weed – cenxrus a low-floral, causing damage, both to plant growing, and animal husbandry is described. The periods of germination, flowering of fructification of a weed, and also a measure of fight against it are specified.
Attention – a malicious pine forest
Attention – a malicious pine forest!
The weed of an izsemeystvo of cereals, occurs from North America. Its centers are available on the considerable area in the south of Ukraine and in Moldova.
Litters almost all field cultures, especially propashny, pastures. Plentifully grows on roadsides of roads, on coast of irrigation canals. Prickly fruits cling to rubber, fabric and other soft materials, wool, skin of animals that accelerates weed distribution.
In Ukraine for the first time it is found in 1950 in the Kherson area, in the Crimea – at station Jankoi along tracks on the area 1,02ga.
Tsenkhrus – a weed not only oppressing development of cultural plants, it does strong harm and to animal husbandry. Prickly fruits of a weed spoil quality of wool, injure skin of animals, and getting contain with sterns in an oral cavity, cause tumors and ulcers.
Tsenkhrus – an annual grassy plant in height from 20 to 120 see. Stalks flat, at the basis stelyushhiesya, at contact with the soil take roots in knots. Leaves smooth, linear, narrow. An inflorescence – a faltering brush from 8 – 20 cones, fruits – cones prickly two-floral. In a cone usually there are two zernovka, one are more rare or three which sprout in a cone. One plant can form to 3 thousand seeds.
Shoots and young plants cenxrusa are outwardly similar on a shchetinnik green and a bur grass ordinary. The main distinctive sign is existence of prickly fruits, before their education cenxrus it is possible to distinguish from other cereals if to dig out a plant together with roots to which the prickly cone of a weed is attached.
In field conditions seeds sprout, when the soil will well get warm, at the end of April or at the beginning of May. Blossoms at the end of June – July, fructifies in August – September. According to the annual plan at us in the Razdolnensky area in 2008 is planned to survey 20ga. At identification of the small center cenxrusa manual weeding with the subsequent burning of plants of a weed, or processing by herbicide Raundap, 48 % of 3-6 l/hectares is carried out. Processings carry out on vegetiruyushchy plants of a weed – to a kushcheniye phase. Skashivaniye it is ineffective, as growth of new stalks from kushcheniye knot is possible.
N. COOPER,
state inspector of Razdolnensky regional quarantine point.