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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.

Lactuca sativa L. · Lettuce

Vilmorin-Mikado S.A.S.

FR
4 records

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)

FR
4 records

Jolito

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
6 records

Exmoss

Application submitted

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
5 records

Stamir

Active

Lactuca sativa L. · Lettuce

MORAVOSEED

CZ
3 records

Aqualie

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)

FR
4 records

LS16748

Active

Lactuca sativa L. · Lettuce

Syngenta Crop Protection AG

NL
5 records

Antaine

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)

FR
4 records

Thea

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

NL
6 records

Bonalisa

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

NL
5 records

Frillred

Active

Lactuca sativa L. · Lettuce

FRANK FRANCIS

NL
3 records

Melitona

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
7 records

Carasco

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
5 records

Redina

Application submitted

Lactuca sativa L. · Lettuce

ENZA ZADEN - DE ENKHUIZER ZAADHANDEL BV

NL
4 records

Voltron

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)

FR
4 records

Dynamite

Active

Lactuca sativa L. · Lettuce

Nunhems BV (NL)

HR NL
5 records

Colai

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
5 records

Tercius

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
5 records

Bartimer

Active

Lactuca sativa L. · Lettuce

Nunhems B.V.

NL
6 records

Buckley

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

NL
6 records

Xenabella

Terminated

Lactuca sativa L. · Lettuce

Vilmorin-Mikado S.A.S.

FR
4 records

Follomy

Terminated

Lactuca sativa L. · Lettuce

Enza Zaden (NL)

HR NL
3 records

Oleole

Active

Lactuca sativa L. · Lettuce

Syngenta Seeds B.V.

NL
5 records

Roselita

Active

Lactuca sativa L. · Lettuce

Syngenta Crop Protection AG

NL
5 records

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