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 tuberosum L. · Potato
Heinrich Böhm
Fragaria L. · Strawberry
Voth, Victor|Santa Ana, CA / Shaw, Douglas V.|Davis, CA / Bringhurst, Royce S.|Davis, CA
Malus domestica (Suckow) Borkh. · Apple
Wit Inge De / Eyssen Hendrik / Keulemans Johan / Nicolai Johan / Laer Paul Van
Pisum sativum L. · Pea
Syngenta Seeds B.V. (NL)
Solanum lycopersicum L. · Tomato
WESTERN SEED ESPAÑA, S.A.
Festuca rubra L. · Red fescue
Van Engelen Zaden BV (NL)
Rosa L. · Rose
Ruiter, Gijsbert De|AB Hazerswoude, Netherlands
Hordeum vulgare L. · Barley
Serasem, FR
Brassica oleracea L. (White Cabbage Group) · White cabbage
Yusuke KATO, JP
Brassica oleracea L. (White Cabbage Group) · White cabbage
Syngenta Seeds B.V. (NL)
Poa pratensis L. · Kentucky bluegrass
Theodorus P.M. op den Kamp
Lolium perenne L. · Perennial ryegrass
BARENBRUG RESEARCH WOLFHEZE
Trifolium repens L. · White clover
Oseva
Poa pratensis L. · Kentucky bluegrass
Francois van der Hee
Triticum aestivum L. · Bread wheat
WIERSUM PLANTBREEDING
Festuca rubra L. · Red fescue
Van Engelen Zaden BV (NL)
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Syngenta Seeds, NL
Malus Mill. · Apple
Morren-De Coster, J.
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
SOCIETE CIVILE DARBONNE
Lolium perenne L. · Perennial ryegrass
MOMMERSTEEG INTERNATIONAL
Malus domestica (Suckow) Borkh. · Apple
Olivier Grard, Alexandre Grard, France
Malus domestica (Suckow) Borkh. · Apple
Susan K. Brown, Kevin Maloney, Cornell University
Malus domestica (Suckow) Borkh. · Apple
THE MAWLEY FAMILY TRUST
Malus domestica (Suckow) Borkh. · Apple
Michelangelo Leis, Alessio Martinelli, Francesco Tagliani, Gianfranco Castagnoli (deceased)