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.
Anethum graveolens L. · Dill
Krakowska Hodowla i Nasiennictwo Ogrodnicze POLAN sp. z o.o.
Beta vulgaris Sugar Beet Group · Sugar beet
KUTNOWSKA HODOWLA BURAKA CUKROWEGO Sp.z o.o.
Zea mays L. · Maize
KWS SAAT SE and CO KGAA
Lactuca sativa L. · Lettuce
BEJO ZADEN
Rosa L. · Rose
Poulsen Roser A/S
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
SAKATA SEED AMERICA INC US
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
SEMINIS INC
Zea mays L. subsp. mays (Maize Group) · Maize
Nordic Maize Breeding Vof
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Malopolska Hodowla Roslin Spolka z o.o.
Solanum lycopersicum L. · Tomato
Produkcja i Hodowla Roslin Ogrodniczych Krzeszowice sp. z o.o.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Petr Horal
Vaccinium vitis-idaea L. · Lingonberry
Swedish University of Balsgard Dept. of Horticultural Plant Breeding
Phaseolus vulgaris L. · Common bean
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Rosa L. · Rose
W.KORDES'SOHNE
Avena sativa L. · Oat
Oregro Seeds
Malus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
Fagopyrum esculentum Moench · Buckwheat
RESEARCH CENTER OF DEBRECEN (HU)
Avena strigosa Schreb. · Black oat
Lammers Seed Options B.V.
Triticum aestivum L. · Bread wheat
RAGT 2N S.A.S
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Escallonia laevis (Vell.) Sleumer · Escallonia
P.M. Moreau
Ribes uva-crispa L. · Gooseberry
Festuca trachyphylla (Hack.) Hack. · Hard fescue
Barenbrug Holland BV (NL)
Beta vulgaris Sugar Beet Group · Sugar beet
SESVANDERHAVE NV-SA, BE