Cultivation
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.
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
MINISTERO DELLE POLITICHE AGRICOLE E FORESTALI - DIREZIONE GENERALE DELLE POLITICHE AGRICOLE ED AGROINDUSTRIALI NAZIONALI
Lactuca sativa L. · Lettuce
Graines Gautier SA (FR)
Lactuca sativa L. · Lettuce
RAMIRO ARNEDO, S.A.
Lactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
Lactuca sativa L. · Lettuce
Nunhems B.V.
Lactuca sativa L. · Lettuce
keine Angabe
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Lactuca sativa L. · Lettuce
BLUMEN GROUP S.P.A
Lactuca sativa L. · Lettuce
HM.CLAUSE
Lactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
Lactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
Lactuca sativa L. · Lettuce
Nunhems B.V.
Lactuca sativa L. · Lettuce
Semenarna Ljubljana, SI
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Lactuca sativa L. · Lettuce
Seminis Vegetable Seeds
Lactuca sativa L. · Lettuce
Nunhems B.V.
Lactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Lactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
Lactuca sativa L. · Lettuce
Syngenta Crop Protection AG
Lactuca sativa L. · Lettuce
ReinSaat KG
Lactuca sativa L. · Lettuce
MERIDIEM SEEDS S.L.
Lactuca sativa L. · Lettuce
Domaine Public (FR)