Authors write that almost all crops of grain grains of cultures are to a greater or lesser extent littered with such weeds as a sow-thistle field, a bindweed field, a wheat grass creeping, mar white, quarantine objects.
How to define contamination level in points, to carry out the combined processings fungicidami and herbicides – to prepare lateral mixes, terms of processings are told by article.
Article in the newspaper
Today all crops of grain grains of cultures, and more than a half – in average and strong degree are littered practically. The contamination of fields such weeds as a sow-thistle field, a bindweed field, a wheat grass creeping, mar white, shchetinnik, and also the plants included in the list of quarantine objects for our region amplified.
Weed plants reduce not only a crop, but also its qualitative characteristics. The contamination of the grain collected from littered crops, reaches 20-30 %, at an admissible limit of 4 %. Grain thus depreciates, as impurity of seeds of weeds gives to a flour dark color, weeds are rezervator of wreckers and causative agents of diseases.
The complex assessment of a contamination is the first stage of planning and implementation of protective measures contamination Level in points is determined by a five-point scale:
1 point (weak degree) – 1-5 copies of all vegetiruyushchy types of weeds on sq.m.
2 points (weak degree) - 6-15 copies of weeds on sq.m.
3 points (average degree) – 16-50 copies on sq.m.
4 points (strong degree) – 51-100 copies on sq.m.
5 points (very strong degree) – more than 100 copies on sq.m.
To apply herbicides it is necessary on the basis of cards of an operative contamination of fields. In case of prevalence in crop rotations of two-submultiple weed plants it is necessary to give preference to poslevskhodovy herbicides. If in crops more than annual and long-term cereal weeds, choose anticereal herbicides.
The group of herbicides of continuous action on a basis glifosata can be used on steam fields, in system of zyablevy processing of fields, and also is perspective for fight against weeds on waste and laylands. Weeds in an early phase of development when their suppression needs the minimum dose of a preparation are most sensitive to herbicides.
Due to the strong mixed contamination of crops, and also it is necessary to apply preparations to depreciation of processing, improvement of quality of chemical weeding on the basis of two active ingredients or lateral mixes of herbicides.
Weather climatic conditions of this period promote further manifestation of such diseases as: the root decayed, mealy dew, septorioz, a brown sheet rust. Therefore, to agricultural producers of all forms of ownership to be ready, after vegetation renewal, on crops infected with diseases to carry out the combined processings fungicidov with herbicides (lateral mixes), taking into account a temperature mode. Introduction of herbicides together with fungicidami is necessary for carrying out, since more developed crops grain and to an exit in a tube.
We recommend for application the following lateral mixes: Cowboy of 40 % of century of river (60 ml/hectares + Granstar of 75 %. (10 ml/hectares) + Alto 400SC Century. To. (0,15-0,2 l/hectares); Cross-country of 16,4 %, century of (50 ml/hectares) + Granstar 75 %v.g. (10 ml/hectares) + Impakt of 25 % of page of the item (0,5-¬ú/hectare); Lintur of 70 %, century of (75 g/hectares) + Mercury of century of (10 úÓ/hectare) + Fundazol of 50 % for item page (0,5 kg/hectares); Logran of 75 %, century of (6 g/hectares) + Banvel 4S 480SL, v.r.k. (0,15 l/hectares) + Rex of T since page (0,5-0,75¬ú/hectare); Banvel 4S 480SL, v.r.k. (0,15 l/hectares) + Laren of 60 % for item page (5 úÓ/hectare) + Topsin of M of page of the item (1,0 kg/hectares).
It is necessary to prepare lateral mixes directly ahead of processing, strictly observing safety measures. Besides, compound of different herbicides (active ingredients) doesn’t cause emergence of stability of weeds to herbicide.
V. Permyakov, chief of the State station of protection of plants of ARK, L.Alekseev, main agriculturist, S. Kindruk, head of laboratory of forecasts and diagnostics of plants.