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.
Poa pratensis L. · Kentucky bluegrass
SIMON| Prof. Dr. Uwe Simon Lehrstuhl fuer Gruenlandlehre der TU Muenchen
Raphanus sativus L. var. oleiformis Pers. · Oil radish
VANDIJKE| VANDIJKE RESEARCH B.V.
Berberis thunbergii DC. · Japanese barberry
Janusz Szewczyk
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Lilium L. · Lily
Testcentrum voor Siergewassen B.V.
Solanum lycopersicum L. · Tomato
Zeraim Gedera Ltd (IL)
Cichorium endivia L. · Endive
Vilmorin SA (FR)
Poa pratensis L. · Kentucky bluegrass
PICKSEED
Cucumis melo L. · Melon
Moshe Zalsman
Rhododendron L. · Azalea
Erbe/Erbengemeinschaft Hans Hachmann
Zea mays L. · Maize
Rich Janssen
Juglans regia L. · Persian walnut
Khokhlov Serhii IUriiovych
Cynodon dactylon (L.) Pers. · Bermuda grass
PURE SEED TESTING
Poa pratensis L. · Kentucky bluegrass
PURE SEED TESTING
Rheum rhabarbarum L. · Rhubarb
W. LEGUTKO PRZEDSIEBIORSTWO HODOWLANO NASIENNE SP.Z.O.O
Lolium perenne L. · Perennial ryegrass
ADVANTA SEEDS PACIFIC
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
AKIRA SEEDS S.L.
Vitis vinifera L. · Common grape vine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Cucumis sativus L. · Cucumber
Yan Kulstra
Cucurbita pepo L. · Field pumpkin
Domaine Public (FR)
Brassica oleracea L. (White Cabbage Group) · White cabbage
SJAAK VAN DER PLOEG
Lilium L. · Lily
Boltha van der Marel B.V.
Lilium L. · Lily
Vletter & Den Haan Beheer B.V