Lotus
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 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.
Diamond
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
5 records
Michelagio
ActiveLactuca sativa L. · Lettuce
Syngenta Seeds B.V.
NL
9 records
Red Crispita II
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
10 records
Annisole
ActiveLactuca sativa L. · Lettuce
SYNGENTA SEEDS B.V.
NL
7 records
Garone
ActiveLactuca sativa L. · Lettuce
Vilmorin, F
FR
7 records
Pedrola
ActiveLactuca sativa L. · Lettuce
JONATHAN SINCLAIR (ENZA ZADEN BEHEER B.V.)
NL
7 records
Themes
ActiveLactuca sativa L. · Lettuce
NUNHEMS
NL
8 records
Aquino
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
8 records
Umbrinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Ezabel
ActiveLactuca sativa L. · Lettuce
Magali Lemont
NL
7 records
Crufia
TerminatedLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
BG
HU
NL
SK
6 records
Binex
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Bateira
ActiveLactuca sativa L. · Lettuce
Nunhems B.V.
NL
8 records
Landau
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
10 records
Presidential
ActiveLactuca sativa L. · Lettuce
SYNGENTA SEEDS B.V.
ES
NL
7 records
Santarinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Tarzan
ActiveLactuca sativa L. · Lettuce
MORAVOSEED
CZ
SK
5 records
Névada
Protection expiredLactuca sativa L. · Lettuce
VILMORIN, S.A.
ES
FR
IT
NL
6 records
Juniper
ActiveLactuca sativa L. · Lettuce
Nunhems B.V., Nunhems B.V.
NL
8 records
Green Towers
ActiveLactuca sativa L. · Lettuce
Harris Moran Seed Company (USA) (US)
FR
NL
5 records
Outbex
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Jasperinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Filipus
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
ES
NL
6 records