Cultivation

Winter covering

Winter covering is an agrotechnical practice for plant protection, indicating a variety's insufficient adaptation to the local climate. The necessity of this procedure shifts crop cultivation into an intensive and labor-intensive format, requiring regular expenditures and strict adherence to work s…

Mentioned in descriptions 14 029 varieties reference book.

The need for winter covering manifests as mandatory annual plant preparation, including mulching, hilling, bending down shoots, or using protective frames and materials. This is a variety marker indicating its inability to independently withstand local climatic conditions, which compels the agronomist to create an artificial environment for protection against frost damage.

Protection effectiveness directly depends on adhering to timelines and the quality of materials used. Early covering at high temperatures can provoke rotting or the development of fungal diseases, while late covering will not protect against early frosts. The success of the operation is also determined by the general condition of the plants: weakened specimens or an excess of nitrogen nutrition in autumn increase the risk of death even when protective structures are present.

Assessing the feasibility of covering relies on economic profitability and agrotechnical capabilities. With the aging of woody and shrub crops, the complexity of installing structures increases, which reduces the scalability of plantings. When choosing a variety, it is recommended to consider frost resistance data and prioritize regionalized winter-hardy alternatives that do not require manual intervention during the winter period.

Sources10

Breakdown by crop

Found in these crops

Apple 613 Grapevine 393 Tomato 340 Peach 338 Melon 293 Cauliflower 270 Bell pepper 263 Perennial ryegrass 246 Rose 242 Cucumber 230 Watermelon 219 Bigleaf hydrangea 198

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Rosy Dream

Active

Allium L. · Ornamental Allium

W. van Lierop & Zonen B.V.

1 record

REGUEIRAL

Withdrawn

Agrostis capillaris L. · Common bent

CALFENSA PROYECTOS, S.L./JOSE ALBERTO OLIVEIRA PRENDES

1 record

Reeham

Active

Solanum lycopersicum L. · Tomato

Michael Edwin Kuehn

2 records

Red Szampion

Active

Malus domestica (Suckow) Borkh. · Apple

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

2 records

Romanov F1

Active

Brassica oleracea L. (Red Cabbage Group) · Red cabbage

Gerard Balder

1 record

Rokula

Terminated

Ribes uva-crispa L. var. sativum DC.

BAUER RUDOLF| Dr. Rudolf Bauer (+)

1 record

Regale

Application submitted

Lactuca sativa L. · Lettuce

Gautier Semences SAS (FR)

1 record

Reine Hortense

Terminated

Prunus x gondouinii (Poit. & Turpin) Rehder · Duke cherry

INCONNU (FR)

1 record

Red Chato

Active

Tulipa L. · Tulip

Savro B.V.

1 record

Red Reflex

Active

Sparaxis Ker Gawl.

Boltha B.V.

1 record

Red Sylvie

Active

Prunus armeniaca L. · Apricot

Benoit Escande (FR)

1 record

Red Elswout

Active

Malus domestica (Suckow) Borkh. · Apple

Information not available - Contact NL authorities

1 record

Red King Delicious ISK

Terminated

Malus domestica (Suckow) Borkh. · Apple

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

RATEM

Withdrawn

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

SEMILLAS FITO, S.A.

1 record

Redma F1

Active

Brassica oleracea L. (Red Cabbage Group) · Red cabbage

Nort Khadlier

2 records

Reberger

Active

Vitis vinifera L. · Common grape vine

Dr. Rudolf Eibach / Prof. Dr. Reinhard Töpfer

2 records

Rapid red 2

Active

Raphanus sativus L. · Radish

MINISTERO DELLE POLITICHE AGRICOLE E FORESTALI - DIREZIONE GENERALE DELLE POLITICHE AGRICOLE ED AGROINDUSTRIALI NAZIONALI

1 record

Reactor

Withdrawn

Raphanus sativus L. var. oleiformis Pers. · Oil radish

KWS| KWS SAAT AG

1 record

Rakoniewicka ISK

Active

Prunus persica (L.) Batsch · Peach

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

1 record

Reimonta

Withdrawn

Secale cereale x secale montanum

Gerda Reimann-Philipp

1 record

Raffybel

Application submitted

Solanum lycopersicum L. · Tomato

Gautier Semences SAS (FR)

1 record

Rea Cadis

Active

Malus domestica (Suckow) Borkh. · Apple

Andreas Peil, Crista Fischer,

6 records

Ran Hamburski ISK

Withdrawn

Vitis L. · Grapevine

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

Rablue

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Wädenswil

2 records

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Cultivation

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.