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.
Rosa L. · Rose
KORDES' SOEHNE| W. Kordes' Soehne Rosenschulen GmbH & Co KG
Cucumis melo L. · Melon
Ralf Kuijpers
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Cucumis melo L. · Melon
Syngenta Seeds B.V.
Malus domestica (Suckow) Borkh. · Apple
Stargrow Cultivar Development (ZA)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
HAZERA SEEDS B.V.
Sinapis alba L. · White mustard
Danisco Seed
Lilium L. · Lily
World Breeding B.V
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Syngenta Seeds B.V.
Cucumis melo L. · Melon
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Solanum lycopersicum L. · Tomato
Bayer Holland B.V.
Cucurbita pepo L. · Field pumpkin
Syngenta Seeds B.V.
Festuca arundinacea Schreb. · Tall fescue
Barenbrug Holland BV (NL)
Prunus armeniaca L. · Apricot
Marie-France Bois
Festuca arundinacea Schreb. · Tall fescue
Carneau Freres SA (FR)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Syngenta Seeds B.V.
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Syngenta Seeds B.V.
Allium porrum L. · Leek
Enza Zaden Beheer B.V.
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Syngenta Seeds B.V.
Festuca arundinacea Schreb. · Tall fescue
Rutgers University
Festuca ovina L. · Sheep's fescue
Landbruks- og matdepartementet, N - 0030 Oslo
Lactuca sativa L. · Lettuce
MERIDIEM SEEDS S.L.
Celosia L. · Cockscomb
H. & B.R. van den Bosch