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.
Cucumis sativus L. · Cucumber
Royal Sluis BV (NL)
Allium cepa L. var. cepa · Onion
Bejo Zaden B.V., De Groot en Slot B.V.
Lactuca sativa L. var. capitata L. · Head lettuce
TORSEED - Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa S.A.
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Glycine max (L.) Merr. · Soybean
Semican INC (CA)
Cucurbita pepo L. · Field pumpkin
Enza Zaden Beheer B.V.
Cotoneaster Medik. · Cotoneaster
STROBEL & CO
Gerbera L. · Gerbera
EVELEENS JAN| Jan Eveleens
Lolium multiflorum Lam. · Italian ryegrass
Florida Foundation Seed Producers
Allium cepa L. · Onion
MARALDI DANIELE
Malus domestica (Suckow) Borkh. · Apple
APP Darzkopibas instituts
Malus Mill. · Apple
Reinhard Kaneppele - Termeno (IT)
Malus Mill. · Apple
Reinhard Kaneppele - Termeno (IT)
Zea mays L. · Maize
Mr. Pbero Karolo
Solanum lycopersicum L. · Tomato
Tezier SA (FR)
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Silke TIPPMANN (DE)
Cucumis melo L. · Melon
SEMINIS INC
Malus domestica (Suckow) Borkh. · Apple
Pepinieres et Roseraies Georges Delbard| FR
Brassica oleracea L. (White Cabbage Group) · White cabbage
Nickerson Zwaan B.V. (NL)
Daucus carota L. · Carrot
Domaine Public (FR)
Zea mays L. · Maize
MULLER| J.P. Muller c/o Maiszuchtstation Ciba-Geigy Semences
Vitis vinifera L. · Common grape vine
Mincho Kondarev, Nedyalka Matevska
Vitis vinifera L. · Common grape vine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Brassica oleracea L. (Kohlrabi Group) · Kohlrabi
HILD KARL UND WALTER| Karl und Walter Hild