Cultivation
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.
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.
Solanum melongena L. · Eggplant
RAMIRO ARNEDO, S.A.
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Oseva Uni a.s., CZ
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Cucumis sativus L. · Cucumber
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Lolium perenne L. · Perennial ryegrass
Top Green (FR)
Asparagus officinalis L. · Asparagus
UNIVERSITY OF GUELPH
Cucumis melo L. · Melon
Ralf Kuijpers
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Syngenta Crop Protection AG
Zea mays L. subsp. mays (Maize Group) · Maize
Verneuil Recherche SA (FR)
Allium cepa L. · Onion
AUSTROSAAT| AUSTROSAAT Oesterreichische Samenzucht- und Handels-Aktiengesellschaft
Solanum lycopersicum L. · Tomato
Seminis Vegetable Seeds
Allium cepa L. var. cepa · Onion
Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa w Ozarowie Mazowieckim Spolka z o.o.
Rosa L. · Rose
MATHIAS TANTAU
Gerbera L. · Gerbera
EVELEENS JAN| Jan Eveleens
Dianthus L. · Carnation
NOBBIO GIACOMO
Raphanus sativus L. var. sativus · Radish
Domaine Public (FR)
Cucurbita pepo L. · Field pumpkin
Petoseed, US
Allium cepa L. var. cepa · Onion
Bayer Holland B.V. (NL)
Lolium multiflorum Lam. · Italian ryegrass
DLF SEEDS A/S| DLF Seeds A/S
Rosa L. · Rose
W. Kordes Sohne Rosenschulen GmbH & Co KG| DE
Allium cepa L. var. cepa · Onion
Bejo Zaden BV (NL)
Cichorium endivia L. · Endive
Service Officiel de Controle (FR)
Zea mays L. subsp. mays (Maize Group) · Maize
Euralis Semences FR
Prunus persica (L.) Batsch · Peach
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR