Grazer Krauthaeuptel 2
TerminatedLactuca sativa L. var. capitata L. · Head lettuce
QUEDLING| Saatzucht Quedlinburg GmbH
Cultivation
Cultivation in open field conditions requires the selection of varieties adapted to uncontrolled environmental factors and climatic fluctuations. Such varieties are characterized by genetic plasticity, stress tolerance, and a vegetation period consistent with local weather conditions.
Mentioned in descriptions 28 305 varieties reference book.
Varieties for open field cultivation are bred for adaptation to uncontrolled environmental conditions, unlike greenhouse varieties. Their key feature is the ability to provide a stable yield under fluctuations in temperature, humidity, and light intensity, as well as increased resistance to regional disease pressure.
The choice of variety for open field cultivation depends on the phenological characteristics of the plant, where the life cycle must fit within the frost-free period of a specific location. Morphology is an important factor: preference is often given to determinate forms, resistant to wind stress, and the crop's ability to mature uniformly to facilitate harvesting.
Cultivation technology in open field conditions requires taking into account the biological characteristics of the variety, such as the need for insect pollination. Varieties for field conditions possess higher plasticity, which allows them to maintain yield under less intensive care and nutrient management, while greenhouse counterparts often demonstrate reduced productivity and susceptibility to stress under such conditions.
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.
Lactuca sativa L. var. capitata L. · Head lettuce
QUEDLING| Saatzucht Quedlinburg GmbH
Lactuca sativa L. var. crispa L. · Leaf lettuce
Paul Degreef
Lactuca sativa L. · Lettuce
Domaine Public (FR)
Lactuca sativa L. · Lettuce
Syngenta Participations AG
Ocimum basilicum L. · Basil
PUBBLICO DOMINIO
Lilium L. · Lily
G.A. Verdegaal en Zn. Export B.V.
Cucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Tulipa L. · Tulip
C.W. van der Hulst Bloembollen B.V.
Bidens ferulifolia (Jacq.) DC. · Apache beggartick
MICHAEL HELMUT UNGER
Tulipa L. · Tulip
Holland Bolroy Markt B.V.
Cucumis sativus L. · Cucumber
Hari Besels
Cucumis melo L. · Melon
Robert Priieur
Brassica oleracea L. (White Cabbage Group) · White cabbage
Lim Sang Hwa
Fragaria L. · Strawberry
Marchetti Enrico, Danesi Lucilla,
Raphanus sativus L. var. sativus · Radish
Tyshkovs`kyi Volodymyr Mykhailovych, Liubosh Srbek,
Lilium L. · Lily
World Breeding B.V
Tulipa L. · Tulip
Fa. Gebr. Laan
Tulipa L. · Tulip
Maveridge Licensing B.V.
Chrysanthemum L. · Chrysanthemum
Dekker
Cichorium endivia L. · Endive
Domaine Public (FR)
Tulipa L. · Tulip
Rooyakkers/Ligthart
Tulipa L. · Tulip
Holland Bolroy Markt B.V.
Lactuca sativa L. · Lettuce
Seeds by Design (US)
Raphanus sativus L. var. sativus · Radish
Herrit Vlaar, Lipskyi Volodymyr Volodymyrovych,