Mammamia
ActiveLactuca sativa L. · Lettuce
MERIDIEM SEEDS S.L.
IT
2 records
Cultivation
Greenhouse Lettuce
Lactuca sativa L.
Growing lettuce in a protected environment requires strict control of salinity, pH levels, and a specific temperature regime, which is significantly lower than that of tomatoes or cucumbers.
In the reference 755 varieties crop Lettuce, where this is mentioned in the description.
Lettuce is extremely sensitive to soil salinity, responding to it with the development of marginal leaf burn. To prevent manganese toxicity, it is necessary to maintain a pH level of 6.5, which converts micronutrients into a poorly soluble form. In hydroponic cultivation, the ebb and flow method is more effective than the nutrient film technique, as it contributes to an increase in biomass and dry matter content.
Unlike thermophilic vegetable crops, lettuce requires a temperature maintained at 18–20 °C for growth and 12–14 °C for head formation. Disruptions to the microclimate and high temperatures in greenhouses during the summer period trigger premature bolting, which reduces the commercial quality of the produce.
General information about the subject — on the page Protected cultivation.
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.
Giannole
ActiveLactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
FR
3 records
Jannica
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
3 records
Saroga
Application submittedLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
3 records
Shotter
TerminatedLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Divisor
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Venegia
ActiveLactuca sativa L. · Lettuce
Petoseed Co INC (US)
FR
2 records
Rodanice
TerminatedLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Alburnus
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Araro
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Glorinice
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Soupirai
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
4 records
Perlinice
TerminatedLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Eventaï
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
4 records
Veladero
ActiveLactuca sativa L. · Lettuce
Monsanto Vegetable IP Management B.V.
FR
5 records
Chardonita
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
4 records
Crispyano
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Gaitera
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Subyana
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Celistra
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Delinice
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Fortiga
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Antivole
Application submittedLactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
FR
2 records
Cersa
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records