Responding to requests of readers, the newspaper gives the consultation, what means to fight with oidiumy which started to prove on vineyards in connection with hot weather.
Organic wine growing
At the desire of readers
amateur wine-growers during this hot time often report that leaves, escapes, crests and berries on bushes of grapes began to become covered by a gray raid.
Answers to their questions – that for an illness and as with it to fight – we found in the Dachnik weekly and decided to publish.
Oidium (mealy dew) rasprostranen in all zones of a vinogradaryostvo of Ukraine. Does big harm to a crop in years with the raised air temperature after warm winters. The illness affects all green bodies of grapes – leaves, escapes, short moustaches, crests, inflorescences, berries.
The struck leaves become covered from the top party grayish for a short while which is easily erased. Separate pyatna soon merge and take all veryokhny part of sheet plates. Porayozhennye leaves cease grow, stanovyatsya fragile, dry up and are showered.
Green escapes, inflorescences, short moustaches, grebni also become covered gray for a short while. On escapes under nayolety a mushroom there are dark gray spots neprayovilny formy. Growth pobegov priostanavlivaetsya. At a dozrevayoniya porazhenyony sites pobegov stanovyatsya the henna-red.
Defeat oidiyoumy berries is most dangerous. On them the mealy raid too is formed. On a porazhenyony thin skin there are the numerous grayish points, spots forming of a neprayovilny form. Struck tkani thin skins cease grow, and under nayotisky pulp fabrics they are broken off, baring grains. The fissured berries often lose juice, rot.
Development oidiuma and its vredonosyonost are closely connected with ecological usyoloviya. An illness intensively razvivaetsya in droughty years, on zagushchenny nayosazhdeniye, at introduction of nesbalansiroyovanny udobyoreniye on nutrients.
Mentioned preparaty sulfurs, as a whole, are effective protiv oidiuma, but aren’t applicable on some, chuvstviyotelny to sulfur, grades. Agyorotekhnichesky actions (landing on well aired and solar uchayostka, orientation of ranks, for optimization of these conditions, use of blown formirovka, etc.) can lower a vredoyonosnost oidiuma.
With oidiumy and other gribyony diseases of plants it is possible to apply baking soda to fight (bicarbonate of sodium, NaHCO3) and bicarbonate of potassium (KNSO3). The idea isn’t new. For example, as it is mentioned in literature, by means of solution of baking soda in razyolichny concentration (1/4-1 ounce (28,35 g) on gallon (3,785 l) waters) it is possible – to fight against mealy dew on curling roses, cucumbers, eggplants, wild strawberry, a pumpkin, a melon, a black spottiness of roses, antraknozy on vegetable marrows, a rust of wheat, etc. On grapes 1 % a rayostvor of baking soda with addition of a smayochivatel, for example, a laundry soap is used. According to the German data, three such obraboyotok was enough for control oidiuma on a neusyotoychivy grade Bakhus. It is necessary to avoid higher kontsenyotratsiya of soda, that not pozhech leaves.
Baking soda is harmless, it it is possible to carry out processings to any terms and its residual quantity in fruits not reglamentiruetsya. Appear new fungicidy on the basis of bicarbonates.
In protective measures primenyaetsya also biofungicid AQ10 (a proizvoyoditel of Esogen, in the form of water dispersnyx granules. Containing in the gribny parasite of Ampelomyces quisqualis zarazhaet oidium is mute and suppresses its dalneyyoshy distribution.
(On Dachnik newspaper materials).