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.

Orlando

Terminated

Chrysanthemum L. · Chrysanthemum

Johan David

2 records

Overdrive

Active

Lolium perenne L. · Perennial ryegrass

Rutgers, the State University of New Jersey and Novel AG, Inc.

2 records

Norfolk Pippin

Active

Malus domestica (Suckow) Borkh. · Apple

Information not available - Contact NL authorities

2 records

Onyks

Active

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

PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.

3 records

NS H 195

Active

Helianthus annuus L. · Sunflower

Radic Velimir, Dusanic Nenad, Miklic Vladimir, Miladinovic Dragana, Tsveich Sandra, Jocic Sinisa,

3 records

Noir gros long d'hiver

Active

Raphanus sativus L. var. niger (Mill.) S. Kerner · Black radish

Domaine Public (FR)

2 records

NEGRAL_DE_SABIÑAN

Active

Olea europaea L. · Olive

3 records

Nives

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

CORA SEEDS S.R.L

2 records

Ohara

Terminated

Lolium perenne L. · Perennial ryegrass

EIGEN VERMOGEN VH INSTITUUT VOOR LANDBOUW- EN VISSERIJONDERZOEK

3 records

Odin

Active

Spinacia oleracea L. · Spinach

Vilmorin-Mikado Denmark

2 records

Noir Long Pardailhan

Active

Brassica rapa L. var. rapa (L.) Thell. · Turnip

INCONNU (FR)

2 records

Neffiac

Terminated

Cucumis melo L. · Melon

Gautier Semences SAS (FR)

4 records

Numex Sahara

Active

Cynodon dactylon (L.) Pers. · Bermuda grass

DEPARTMENT OF AGRONOMY AND HORTICULTURE

4 records

New Orleans

Active

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

2 records

Nagai

Active

Capsicum annuum L. · Bell pepper

Syngenta Seeds B.V.

2 records

Niçaise

Terminated

Cucurbita maxima Duchesne · Giant pumpkin

Domaine Public (FR)

2 records

N 6404

Active

Solanum lycopersicum L. · Tomato

Nunhems B.V.

3 records

Nawojka

Active

Rubus idaeus L. · Red raspberry

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

4 records

Nurra

Active

Lolium rigidum Gaudin · Wimmera ryegrass

CNR ISPAAM

2 records

Noir long maraîcher

Active

Raphanus sativus L. var. niger (Mill.) S. Kerner · Black radish

Domaine Public (FR)

2 records

Novowak

Withdrawn

Solanum lycopersicum L. · Tomato

Syngenta Crop Protection AG

3 records

NOBEL

Terminated

Spinacia oleracea L. · Spinach

Nickerson Zwaan

2 records

N 4307

Active

Solanum lycopersicum L. · Tomato

Nunhems B.V.

4 records

Mosak

Active

Cucumis sativus L. · Cucumber

Yuksel Tohumculuk Tarim San. ve Tic. Ltd. Sti.

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.