Cultivation
Lactuca sativa L.
Technology for protecting winter lettuce crops with non-woven materials to maintain the established rosette in a dormant state until spring growth resumption.
In the reference 141 varieties crop Lettuce, where this is mentioned in the description.
For winter lettuce sowing in open ground, air- and light-permeable non-woven materials are used, which are installed when temperatures drop to -5°C. When frosts below -10°C are forecasted, an additional layer of coniferous branches or dry leaves is used for thermal insulation of the root system. During winter thaws, the cover must be partially opened for ventilation to avoid rosette rot and prevent damping off.
The effectiveness of the method depends on the choice of winter-hardy varieties, such as 'Moskovskiy parnikoviy', 'Gladiator', or Romaine-type varieties, as well as on adhering to September sowing dates, which ensure rooting without excessive overgrowth. An important condition for successful overwintering is placing crops on well-drained elevated areas, as stagnant moisture under the cover leads to inevitable crop loss.
General information about the subject — on the page Winter covering.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Lactuca sativa L. · Lettuce
Nickerson Zwaan, NL
Lactuca sativa L. · Lettuce
ZONNEVELD OLAF
Lactuca sativa L. · Lettuce
Novartis Seeds BV (NL)
Lactuca sativa L. · Lettuce
Syngenta Seeds B.V.
Lactuca sativa L. · Lettuce
Enza Zaden BV (NL)
Lactuca sativa L. · Lettuce
NUNHEMS
Lactuca sativa L. · Lettuce
MORAVOSEED
Lactuca sativa L. · Lettuce
Syngenta Seeds, NL
Lactuca sativa L. · Lettuce
Syngenta Seeds B.V.
Lactuca sativa L. · Lettuce
Steven Mitchell, Daniel Trimboli, Enza Zaden Australia Pty Ltd
Lactuca sativa L. · Lettuce
Les Graines Caillard Sa (FR)
Lactuca sativa L. · Lettuce
Rijk Zwaan, NL
Lactuca sativa L. · Lettuce
Syngenta Crop Protection AG
Lactuca sativa L. · Lettuce
ENZA ZADEN
Lactuca sativa L. · Lettuce
Syngenta Seeds B.V.
Lactuca sativa L. · Lettuce
Syngenta Crop Protection AG
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Lactuca sativa L. · Lettuce
Vilmorin-Mikado S.A.S.
Lactuca sativa L. · Lettuce
Syngenta Seeds B.V.
Lactuca sativa L. · Lettuce
Domaine Public (FR)
Lactuca sativa L. · Lettuce
Lactuca sativa L. · Lettuce