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.
Raphanus sativus L. var. oleiformis Pers. · Oil radish
Ir. Hervé de Clercq c/o ILVO - Plant-Toegepaste Genetica en Veredeling
Trifolium incarnatum L. · Crimson clover
Carneau Freres SA Eurogazon (FR)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Barenbrug Holland BV, 6501 BH Nijmegen
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland B.V.
Festuca rubra L. · Red fescue
Barenbrug Holland BV (NL)
Festuca rubra L. · Red fescue
DLF Trifolium A-S, DK
Prunus domestica L. · European plum
Universitat Hohenheim, D
Festuca rubra L. · Red fescue
RAGT 2N S.A.S
Festuca rubra L. · Red fescue
RAGT 2N S.A.S
Allium cepa L. · Onion
WIJNKER THAAM
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
XINGPING ZHANG
Lolium perenne L. · Perennial ryegrass
Theodorus P.M. op den Kamp
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland BV (NL)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lantmannen SW Seed AB, SE-268 81 Svalof
Solanum melongena L. · Eggplant
Rene Khenkuet
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Zsolt Galli
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland B.V.
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
United Genetics Seeds, USA
Festuca trachyphylla (Hack.) Hack. · Hard fescue
Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey
Solanum lycopersicum L. · Tomato
PNOS
Lolium perenne L. · Perennial ryegrass
Theodorus P.M. op den Kamp
Raphanus sativus L. var. niger (Mill.) S. Kerner · Black radish
Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa w Ozarowie Mazowieckim Spolka z o.o.
Festuca rubra L. · Red fescue
Theodorus P.M. op den Kamp
Festuca rubra L. · Red fescue
Barenbrug Holland BV (NL)