Whisper
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Cultivation
Winter protection for lettuce
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.
Varieties of Lettuce mentioned in the description
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.
Liboga
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Ivernice
TerminatedLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
3 records
Mareika
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
6 records
Calaflor
Application submittedLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
5 records
Etincel
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Icebeat
ActiveLactuca sativa L. · Lettuce
MARALDI SEMENTI S.r.l.
FR
3 records
Laitue Express
ActiveLactuca sativa L. · Lettuce
Domaine Public (FR)
FR
2 records
Valea
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
De Verrières
TerminatedLactuca sativa L. · Lettuce
Vilmorin SA (FR)
FR
2 records
Lovanice
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Cavale
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Lactuca sativa L. · Lettuce
Domaine Public (FR)
FR
2 records
Batavia goutte de sang
ActiveLactuca sativa L. · Lettuce
Domaine Public (FR)
FR
2 records
Blonde à couper améliorée
ActiveLactuca sativa L. · Lettuce
Domaine Public (FR)
FR
2 records
Giannole
ActiveLactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
FR
3 records
Alburnus
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Blonde lente à monter 2
ActiveLactuca sativa L. · Lettuce
Domaine Public (FR)
FR
2 records
Antivole
Application submittedLactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
FR
2 records
Morinas
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Królowa Lata
ActiveLactuca sativa L. · Lettuce
PRZEDSIEBIORSTWO NASIENNICTWA
PL
2 records
Fragola
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
4 records
Rafale
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Egery
TerminatedLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records