In this article wreckers and the diseases which emergence is expected in the second half of autumn of 2008 on crops of winter crops are marked out. Recommendations about fight methods are made.
Forecast
The lack of autumn moisture will affect adversely updating of a natural vegetative cover of the peninsula that will be reflected in reproduction and moving of myshevidny rodents. Their migration on crops of winter crops is expected in the second half of autumn of 2008. As a whole injuriousness and an area of moving of these rodents during the autumn-winter period of 2008-2009 is expected twice below, than in previous year. Because of a lack of a forage of reproduction no more than 25-30 % of females of the wrecker will participate.
In the peninsula territory population will be presented by a steppe, house, field mouse, that is zernoyadny types. And in Leninsk, the Black Sea, Saksky areas settlements of a kurganchikovy mouse will meet. The most intense situation is expected on the fields released after cleaning of rice and sunflower.
At achievement of threshold number of the wrecker 2-3 ¬½./hectare, 7-8 holes in a colony, it is necessary to carry out fight against myshevidny rodents the following preparations: Rodenfos, Ratindan, Storm, Mouse death , etc.
In the third decade of August the exit of the grain ground beetle after summer diapauzy was noted. Yaytsekladka isn’t revealed. The long autumn drought will promote later otkladka of eggs a phytophage.
In the conditions of dry autumn, we recommend carrying out a toksikatsiya of a seed material in fight against larvae of the grain ground beetle a preparation Rogor (Bi-58 New) to carry out only on the seeds sowed on irrigation sites. In a steppe zone to process crops against this wrecker expediently in a food of larvae on shoots of winter crops. Having rummaged in a food can proceed now about two months and come to an end in 1-2 days after loss of plentiful rains and increase of humidity of the soil in the arable horizon more than to 20 %.
During the autumn period ochazhny injuriousness podgryzayushchy a scoop (winter, wheaten), lozhnoprovolochnik is expected.
Destructive actions in fight against larvae of the grain ground beetle and podgryzayushchy scoops, a method of spraying should be carried out at economic thresholds of injuriousness for the grain ground beetle – 0,5-1 copies/sq.m, podgryzayushchy a scoop – 2-3 copies/sq.m, Diazinon’s preparations, century e. 1,5-1,8 l/hectares, Bi-58 of New, 40 % k.e. – 1,5 l/hectares, Dursban, k.e. 1-1,5 l/hectares, Pirineks, k.e. – 1,2 l/hectares, Paraclown, m.k.s. – 0,5-0,75 kg/hectares.
Crops winter in optimum and late terms for our zone, will allow to reduce in the autumn of the current year injuriousness of cereal flies.
Due to the sharp differences of a temperature mode in day and night hours during the autumn period it is necessary to pay attention to such diseases of winter crops as: mealy dew, root decayed, a rust. In case of manifestation of these diseases it is necessary to carry out processings by such preparations as: Fundazol – 0,5 kg/hectares (at air temperature + 7-14oS), or Bayleton 0,5¬ú/hectare, Impakt – 0,5½/hectare, Rex Duo – 0,4-0,6 l/hectares (at temperature above + 14oS).
V. Permyakov, chief of the State inspection of protection of plants, S. Kindruk, deputy chief, head of department of forecasts and fytosanitory diagnostics.