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The Zurich-based fruit growers need to tremble

For Zurich, the fruit farmers are worried full days: The first weekend of may brought not only snow, but Frost widespread. In the night, the temperatures in the entire middle of the country fell below freezing, at the Zurich airport, the Thermometer showed, according to Meteonews just above the floor-minus of 4.9 degrees.

"The flowers and young fruits are sensitive and tolerate the cold poorly," says Hagen Thoss of the Department of pomology at the Strickhof, the agricultural centre of competence of the Canton of Zurich. "A maximum of two degrees below Zero they are, everything is awkward."

Vegetation in the tab

the damage caused in the night on today, Thoss say nothing. This could be in the coming days is estimated. The Situation was but in some ways, with the 2017 comparable, as the Zurich-based fruit farmers lost approximately half of their apricots, cherries and Plums. Because, as then the Vegetation got blooms this year due to the high temperatures in March, about two weeks earlier than average.

The danger is still not banned: Also in Tuesday night is expected even with freezing temperatures. "If there is no contactor in the cold blanket of clouds cushions, it could be even colder than last night," said Thoss. At the Moment it looks like this. Events such as 2017 should become more frequent, I'm afraid he's going to the economic efficiency of the fruit production in the Canton.

protection film and frost candle

most acute are currently at risk of the strawberries. They grow close to the ground, and thus where the cold is most. Thoss recommends the farmer, the strawberries with fleece cover, where necessary, with up to three layers. Thus, the plants can be protected from ground frost.

The Frost is not added but only the near-ground plants. If as of last night, the so-called air frost occurs, so sub-zero temperatures to two meters in height, it is also for fruit trees is critical.

Video: frost candle against the cold How to land Andres Wegmann 2017 host to protect his plants against the Frost. Video: Mario von Ow

Here there are, according to Thoss various measures. Probably the most spectacular is the frost candles from Paraffin wax, which should also protect this year, fruit trees in front of the cold, However, they had come a total of a little out of fashion. "You are, indeed, for some cultures, the only protection opportunity," said Thoss. "But they have two disadvantages: they are expensive and relatively inefficient. Where there is no protective foil can reflect the heat energy dissipated to the energy quickly."

Where available, could be more rain and anti - hail protection films are clamped. A certain heat-cushion is apparent. The most efficient measure was, finally, a sprinkling with water. The freezing process in plants, releases energy in the Form of heat. However, such irrigation systems are not very widespread in the Canton too.

The ice saints are still before

in 2017, the Zurich wine-growers had bitter losses, this year it looks like for you so far better: According to Michael Gölles, head of the specialist wine-growing place at the Strickhof, so far, occurred only in very rare cases of frost damage. Whether it is stick to it, depends on the temperatures in the coming night.

even Though it's supposed to be warmer, could soon get another adversity on the Zurich farmers: the formation of Frost occur until the beginning of June. And when the ice saints are your reputation, you need to worry about the peasants coming weekend, once again a cold snap. (Tages-Anzeiger)

Created: 06.05.2019, 17:33 PM

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