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.
Lolium perenne L. · Perennial ryegrass
DEUTSCHE SAATVEREDELUNG AG
Lolium perenne L. · Perennial ryegrass
DEUTSCHE SAATVEREDELUNG AG
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Lolium perenne L. · Perennial ryegrass
DEUTSCHE SAATVEREDELUNG AG
Lolium multiflorum Lam. · Italian ryegrass
INSTITUTO NACIONAL DE INVESTIGACION AGROPECUARIA (INIA)
Capsicum annuum L. · Bell pepper
HM.Clause S.A.S.
Lilium L. · Lily
PEACOK B.V.& IMANSE LELIEVEREDEL ING B.V.
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Lolium perenne L. · Perennial ryegrass
DLF Trifolium A-S, DK
Lolium perenne L. · Perennial ryegrass
TURF MERCHANTS INC (TMI)
Festuca rubra L. · Red fescue
Euro Grass Breeding GmbH Co. KG
Lolium perenne L. · Perennial ryegrass
Euro Grass Breeding GmbH Co. KG
Lolium perenne L. · Perennial ryegrass
PURE SEED TESTING
Lolium perenne L. · Perennial ryegrass
Teagasc
Triticum aestivum L. · Bread wheat
Saatzucht Edelhof
Lolium perenne L. · Perennial ryegrass
DLF Seeds A/S, 4000 Roskilde
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
United Genetics, I
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Poa pratensis L. · Kentucky bluegrass
PURE SEED TESTING
Lolium perenne L. · Perennial ryegrass
AFBI
Malus domestica (Suckow) Borkh. · Apple
Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Verbena L. · Vervain
Syngenta Seeds B.V.
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Rijk Zwaan Zaadteelt en Zaadhandel B.V.