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.

Sources8

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.

Toya

Active

Lactuca sativa L. · Lettuce

ReinSaat KG

2 records

Gayarda

Active

Lactuca sativa L. · Lettuce

LA SEMIORTO SEMENTI SRL

2 records

Gatsbi

Active

Lactuca sativa L. · Lettuce

Gautier Semences SAS (FR)

2 records

Fragola

Active

Lactuca sativa L. · Lettuce

Syngenta Crop Protection AG

4 records

SV1927LK

Terminated

Lactuca sativa L. · Lettuce

Monsanto Vegetable IP Management B.V.

3 records

Opal

Active

Lactuca sativa L. · Lettuce

HOMYaKOVA ELENA MIHAJLOVNA / ShEVChENKO YuRIJ PETROVICh / LUDILOV VYaChESLAV ALEKSEEVICh / MUHANOVA YuLIYa IVANOVNA / TREBUHINA KLAVDIYa AKIMOVNA / IVANOVA MARIYa IVANOVNA

3 records