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.
Prunus persica (L.) Batsch · Peach
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Quartier Neuf E.A.R.L.
Lolium perenne L. · Perennial ryegrass
BARENBRUG HOLLAND
Zea mays L. · Maize
Stan Jensen y David Benson
Lilium L. · Lily
Vletter, Floris|Rijnsburg, Netherlands
Festuca arundinacea Schreb. · Tall fescue
PURE SEED TESTING
Rubus L. subg. Rubus · Blackberry
University of Arkansas, USA
Lolium perenne L. · Perennial ryegrass
Oseco Inc., Bramton, Ontario, L6V 1A1
Lolium perenne L. · Perennial ryegrass
JACKLIN SEED
Festuca arundinacea Schreb. · Tall fescue
GIE Semunion Recherches (FR)
Vicia villosa Roth · Hairy vetch
Jouffray-Drillaud SA (FR)
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL BV, NL
Prunus persica (L.) Batsch · Peach
Maillard Laurence|Elne, FR / Maillard Arsene|Elne, FR
Lolium perenne L. · Perennial ryegrass
PURE SEED TESTING
Brassica oleracea L. (Cauliflower Group) · Cauliflower
MOSKOVSKOE OTDELENIE VNIIR (MOVIR)
Rosa L. · Rose
Meilland Alain A.
Lactuca sativa L. · Lettuce
Syngenta Seeds, NL
Malus domestica (Suckow) Borkh. · Apple
Rosa L. · Rose
Meilland International S.A.
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V.
Asparagus officinalis L. · Asparagus
Bejo Zaden B.V.
Festuca rubra L. · Red fescue
Dipl.Ing.agr. Heiner Busch in Fa. Deutsche Saatveredelung AG / Dipl.Ing. agr. Cord Schumann
Rubus idaeus L. · Red raspberry
Information not available - Contact NL authorities
Rosa L. · Rose
Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes
Solanum melongena L. · Eggplant
VILMORIN/INRA