Cospenza
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
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. · Lettuce
Enza Zaden Beheer B.V.
Impatiens New Guinea Group · New Guinea Impatiens
KIENTZLER| Ludwig Kientzler
Solanum lycopersicum L. · Tomato
Biogya SRL (IT)
Daucus carota L. · Carrot
Domaine Public (FR)
Raphanus sativus L. · Radish
SEMO a.s
Allium porrum L. · Leek
Sativa coop (IT)
Petroselinum crispum (Mill.) Nyman ex A. W. Hill · Parsley
SEMINIS VEGETABLE SEEDS, NL
Allium cepa L. · Onion
SEMO a.s
Lactuca sativa L. · Lettuce
YUKSEL TOHUM TARIM SAN. VE TIC A.S
Solanum lycopersicum L. · Tomato
Syngenta Seeds BV (NL)
Allium cepa L. · Onion
Martin Slot, John Pieter Schipper,
Lactuca sativa L. · Lettuce
RAMIRO ARNEDO, S.A.
Begonia x hiemalis Fotsch · Elatior Begonia
Gunnar PEDERSEN (DK)
Beta vulgaris Leaf Beet Group · Swiss chard
Graines Voltz (FR)
Beta vulgaris Leaf Beet Group · Swiss chard
GSN Semences (FR)
Lactuca sativa L. · Lettuce
Semenarna Ljubljana, SI
Cichorium intybus L. · Chicory
Semenarna Ljubljana, SI
Solanum lycopersicum L. · Tomato
Garden Seeds B.V.
Zea mays L. · Maize
HOLDEN'S FOUNDATION SEEDS INC.
Daucus carota L. · Carrot
TORSID
Crassula schmidtii Regel
Ole Olsen
Capsicum annuum L. · Bell pepper
INTERSEMILLAS SAU
Allium cepa L. var. cepa · Onion
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Raphanus sativus L. · Radish
PRZEDSIEBIORSTWO NASIENNICTWA OGRODNICZEGO I SZKOLKARSTWA