Rumours
ActiveLactuca sativa L. · Lettuce
BEJO ZADEN
NL
5 records
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.
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.
Nomugi
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Zeus
ActiveLactuca sativa L. · Lettuce
SEVA-FLORA s.r.o. (CZ)
BG
CZ
SK
4 records
Lusia
ActiveLactuca sativa L. · Lettuce
Clause Semences SA (FR)
FR
IT
5 records
Farrio
Application submittedLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
5 records
Skyphos
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Speedway
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
6 records
Limassol
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan, NL
NL
8 records
Celedona
ActiveLactuca sativa L. · Lettuce
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V.
NL
8 records
Jaylin
Application submittedLactuca sativa L. · Lettuce
Nunhems Netherlands B.V.
NL
6 records
Duende
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
ES
NL
5 records
Lennita II
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
7 records
Nordice
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
9 records
Ezflor
ActiveLactuca sativa L. · Lettuce
Lemont
NL
7 records
Cavendish
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
6 records
Mafalda
ActiveLactuca sativa L. · Lettuce
Panora s.p.a.
NL
7 records
Excuria
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
8 records
Iceduke
ActiveLactuca sativa L. · Lettuce
Syngenta Seeds B.V.
NL
8 records
Xiomara
ActiveLactuca sativa L. · Lettuce
NANNES JEROEN
NL
8 records
Nordicstar
ActiveLactuca sativa L. · Lettuce
Nunhems B.V., 6083 AB Nunhem
NL
6 records
Mineral
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan, NL
FR
6 records
Armada
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
NL
5 records
Luberon
ActiveLactuca sativa L. · Lettuce
Royal Sluis Vegetables BV (NL)
FR
NL
5 records
Altozanas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records