Frillred
ActiveLactuca sativa L. · Lettuce
FRANK FRANCIS
NL
3 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.
Octavius
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Chester
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
NL
3 records
Domiziane
Application submittedLactuca sativa L. · Lettuce
Bejo Zaden B.V.
NL
3 records
Brighton
ActiveLactuca sativa L. · Lettuce
ENZA ZADEN
NL
3 records
Acuario
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Yardena
Protection expiredLactuca sativa L. · Lettuce
The State of Israel - Ministry of Agriculture and Rural Development - Agricultural Research Organization (ARO)^^^Hazera (1939) Ltd.
NL
3 records
Bartimer
ActiveLactuca sativa L. · Lettuce
Nunhems B.V.
NL
6 records
Buckley
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
6 records
Kimeri
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
4 records
Xenabella
TerminatedLactuca sativa L. · Lettuce
Vilmorin-Mikado S.A.S.
FR
4 records
Carter
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
6 records
Lagarde
ActiveLactuca sativa L. · Lettuce
Nunhems B.V.
NL
5 records
Oleole
ActiveLactuca sativa L. · Lettuce
Syngenta Seeds B.V.
NL
5 records
Tambay
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Wiske
Application submittedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Alega
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
6 records
Jessica
ActiveLactuca sativa L. · Lettuce
Panora s.p.a.
FR
NL
5 records
Mathix
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
6 records
Kismy
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
5 records
Faramir
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer
NL
6 records
Treslia
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Kiteria
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
4 records
Ortigia
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
5 records