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
Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes
Lactuca sativa L. · Lettuce
Syngenta Seeds B.V.
Trifolium repens L. · White clover
KENT N.F.V.
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
May Agro Seed Corp.(TR)
Capsicum annuum L. · Bell pepper
Monsanto Vegetable, NL
Lolium perenne L. · Perennial ryegrass
Malopolska Hodowla Roslin Spolka z o.o.
Festuca rubra L. · Red fescue
DLF SEEDS A/S
Poa pratensis L. · Kentucky bluegrass
Euro Grass Breeding GmbH Co. KG
Cucurbita pepo L. · Field pumpkin
Syngenta Seeds B.V.
Raphanus sativus L. var. oleiformis Pers. · Oil radish
SEMENCES DE FRANCE
Capsicum annuum L. · Bell pepper
Syngenta Seeds, NL
Festuca rubra L. · Red fescue
DLF Seeds A/S
Poa pratensis L. · Kentucky bluegrass
DLF Seeds A/S
Lolium perenne L. · Perennial ryegrass
J.R. Simplot Company - a Nevada - USA Corporation
Festuca rubra L. · Red fescue
DEUTSCHE SAATVEREDELUNG AG
Lactuca sativa L. · Lettuce
Syngenta Crop Protection AG
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Jacobus Gerardus Hofstede|Wilhelmus Jacobus Gerardus Hofstede
Prunus armeniaca L. · Apricot
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , CEP Innovation S.A.R.L.
Festuca arundinacea Schreb. · Tall fescue
RAGT 2N S.A.S
Poa pratensis L. · Kentucky bluegrass
Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey
Trifolium incarnatum L. · Crimson clover
ROBERTO GUARNIERI
Lolium multiflorum Lam. · Italian ryegrass
INSTITUTO NACIONAL DE INVESTIGACION AGROPECUARIA (INIA)
Lolium multiflorum Lam. · Italian ryegrass
SAATZUCHT STEINACH GMBH and CO KG
Triticum aestivum L. · Bread wheat
Agri-Obtentions S.A., Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)