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Cultivation

Field-grown lettuce

Lactuca sativa L.

Growing lettuce in open fields requires the selection of varieties resistant to bolting under long-day conditions and the management of downy mildew. The crop is characterized by high earliness, which allows for succession planting, and the ability to tolerate frosts down to -2 °C.

In the reference 1 060 varieties crop Lettuce, where this is mentioned in the description.

When cultivating lettuce in open fields, sensitivity to photoperiodism and temperature is a critical factor. Summer varieties must possess bolting resistance, as excessive light and heat trigger premature transition to flowering. The plant's shallow root system requires consistent soil moisture maintenance, and non-woven row covers are often used to protect against heat stress.

Open-field technology involves using lettuce as an intercrop, which is feasible due to its short growing period of 25–40 days. Soil requirements are limited to a pH range of 6.0–6.8, and the quality of seedbed preparation must exclude large clods due to the small size of the seeds. Cold hardiness allows for winter and early spring sowing, while considering the necessity of protection against downy mildew, caused by the pathogen Bremia lactucae.

General information about the subject — on the page Open field.

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.

Rosplus

Active

Lactuca sativa L. · Lettuce

BLUMEN GROUP S.P.A

IT
2 records

Lactuca sativa L. · Lettuce

MINISTERO DELLE POLITICHE AGRICOLE E FORESTALI - DIREZIONE GENERALE DELLE POLITICHE AGRICOLE ED AGROINDUSTRIALI NAZIONALI

IT
2 records

Felicie

Active

Lactuca sativa L. · Lettuce

Gautier Semences SAS (FR)

FR
2 records

Planet

Active

Lactuca sativa L. · Lettuce

BLUMEN GROUP S.P.A

IT
2 records

Sorenza

Terminated

Lactuca sativa L. · Lettuce

Graines Gautier SA (FR)

FR
3 records

Lactuca sativa L. · Lettuce

Domaine Public (FR)

FR
3 records

Marzial

Terminated

Lactuca sativa L. · Lettuce

Syngenta Crop Protection AG

NL
4 records

Parinice

Active

Lactuca sativa L. · Lettuce

Gautier Semences SAS (FR)

FR
3 records

Socca

Active

Lactuca sativa L. · Lettuce

Gautier Semences SAS (FR)

FR
2 records

Lactuca sativa L. · Lettuce

Gautier Semences SAS (FR)

FR
2 records

Lagatta

Terminated

Lactuca sativa L. · Lettuce

Nunhems B.V.

NL
4 records

Lactuca sativa L. · Lettuce

keine Angabe

AT
2 records

Konzugo

Active

Lactuca sativa L. · Lettuce

Syngenta Crop Protection AG

NL
4 records

Lagave

Terminated

Lactuca sativa L. · Lettuce

Nunhems B.V.

NL
4 records

Lirina

Active

Lactuca sativa L. · Lettuce

Syngenta Crop Protection AG

NL
7 records

Liboga

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

NL
4 records

Senorita

Active

Lactuca sativa L. · Lettuce

Nunhems Germany GmbH

DE
4 records

Lactuca sativa L. · Lettuce

BLUMEN GROUP S.P.A

IT
2 records

Belappia

Active

Lactuca sativa L. · Lettuce

HM.CLAUSE

FR
2 records

Americana bruna

Protection expired

Lactuca sativa L. · Lettuce

Semenarna Ljubljana, SI

IT SI
2 records

Linfa

Active

Lactuca sativa L. · Lettuce

BLUMEN GROUP S.P.A

IT
2 records

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