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.
Alstroemeria L. · Alstroemeria
VAN ANDEL JACOB
Solanum tuberosum L. · Potato
SLOOTS| R.H. Sloots
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Syngenta Seeds B.V. (NL)
Festuca rubra L. · Red fescue
D J Van der Have BV (NL)
Brassica rapa L. subsp. campestris (L.) A. R. Clapham · Field mustard
FINNISH PLANT BREEDING INSTITUTE
Lactuca sativa L. · Lettuce
MORAVOSEED
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa w Ozarowie Mazowieckim Spolka z o.o.
Cucumis sativus L. · Cucumber
KUBICKI B. / ANGELUS W. / ZURADZKA I. / SEK S.
Malus Mill. · Apple
PURDUE RESEARCH FOUNDATION
Lolium perenne L. · Perennial ryegrass
Prof. Dr. ir. Dirk Reheul c/o Universität Gent - Afd. Planten- teelt en Plantenveredeling
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Yuksel Tohum, TR
Festuca rubra L. · Red fescue
Van Engelen Zaden BV (NL)
Prunus salicina Lindl. · Japanese plum
SHEPHARD P.MOUT.GR.FRUIT (US)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
MORAVOSEED
Lilium L. · Lily
Peacock B.V.& Imanse LelievereDEL ing B.V.
Hordeum vulgare L. · Barley
SAS FLORIMOND DESPREZ VEUVE and FILS
Cucumis melo L. · Melon
Syngenta Seeds BV (NL)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Syngenta Seeds BV (NL)
Lolium perenne L. · Perennial ryegrass
GAUE| Inge Gaue
Lolium perenne L. · Perennial ryegrass
Euro Grass Breeding GmbH Co. KG
Rosa L. · Rose
W. Kordes Sohne Rosenschulen GmbH & Co KG| DE
Helianthus annuus L. · Sunflower
Remy ROUANET
Apium graveolens L. var. rapaceum (Mill.) Gaud. · Celeriac
J. Wagner (DE)