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Variety traits

Winter hardiness of winter rapeseed

Brassica napus var. napus

The complex ability of winter rapeseed to withstand adverse overwintering conditions, including frosts, thaws, and temperature fluctuations. It determines crop survival and the necessity for spring reseeding.

In the reference 81 varieties crop Rapeseed, where this is mentioned in the description.

To assess the winter hardiness of rapeseed, a visual inspection of the root system is conducted; a healthy root should remain white without brown spots. In field conditions, a critical plant density threshold is considered to be 10 plants per square meter, below which crops must be reseeded, while the optimal density is 25–50 plants per square meter.

Rapeseed is capable of withstanding frosts down to –15…–20 °C without snow cover and down to –30…–35 °C with it. The optimal state for overwintering is considered to be a plant in the rosette phase with 6–8 leaves, a root collar diameter of 8–10 mm, and a growing point located at or below the soil surface.

The risk of crop failure increases when plants become overgrown, as the growing point is elevated above the soil surface, making them vulnerable to temperatures below –8…–10 °C. To increase resistance, hardening at temperatures near freezing is necessary, which promotes the accumulation of soluble substances in the cells.

General information about the subject — on the page Winter hardiness.

Sources8

Varieties of Rapeseed 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.

DK Exquisite

Active

Brassica napus var. napus · Rapeseed

MONSANTO TECHNOLOGY

CZ FR PL UA
10 records

Orkan

Terminated

Brassica napus var. napus · Rapeseed

Raps GbR Saatzucht Lundsgaard

CZ DK PL
11 records

Lohana

Protection expired

Brassica napus var. napus · Rapeseed

Nickerson International Research SNC (FR)

CZ DK FR PL
8 records

Dualis

Active

Brassica napus var. napus · Rapeseed

Norddeutsche Pflanzenzucht DE

CZ DK FR PL
7 records

LG Arrakis

Active

Brassica napus var. napus · Rapeseed

LIMAGRAIN EUROPE

DE DK FR PL UA
9 records

Crusador

Active

Brassica napus var. napus · Rapeseed

Deutsche Saatveredelung AG - DSV (DE)

DK FR PL
5 records

Mainstar

Active

Brassica napus var. napus · Rapeseed

Stuart Gowers, The New Zealand Institute for Plant and Food Research Limited

FR
7 records

Slogan

Terminated

Brassica napus var. napus · Rapeseed

RAPS Gbr Saatzucht Lundsgaard (DE)

CZ DE FR
6 records

Croissant

Active

Brassica napus var. napus · Rapeseed

Dieter Stelling

DK PL UA
6 records

ES Danube

Active

Brassica napus var. napus · Rapeseed

Euralis Semences FR

FR HR
6 records

NK Beamer

Terminated

Brassica napus var. napus · Rapeseed

Syngenta Crop Protection AG

DE DK PL
9 records

Keltor

Active

Brassica napus var. napus · Rapeseed

STELLING DIETER

CZ
6 records

Brentano

Active

Brassica napus var. napus · Rapeseed

Bayer, D

7 records

ES Navigo

Active

Brassica napus var. napus · Rapeseed

LIDEA FRANCE SAS

FR
6 records

DK Imminent CL

Active

Brassica napus var. napus · Rapeseed

Nelly Guguin, Jean-Pierre Despeghel,

FR UA
6 records

KWS Mikados

Active

Brassica napus var. napus · Rapeseed

KWS SAAT SE&CO.KGaA, DE

DE FR UA
8 records

Skater

Terminated

Brassica napus var. napus · Rapeseed

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

CZ DE PL
6 records

DK Exlibris

Active

Brassica napus var. napus · Rapeseed

Monsanto Technology LLC, US

CZ DK FR
6 records

KWS Vamos

Active

Brassica napus var. napus · Rapeseed

KWS SAAT SE & CO.KGAA

DE DK UA
10 records

Aquila

Active

Brassica napus var. napus · Rapeseed

Reinhard Hemker

CZ IE UA
6 records

SY Cornetta

Active

Brassica napus var. napus · Rapeseed

Syngenta Crop Protection AG

DE UA
5 records

Bojan

Active

Brassica napus var. napus · Rapeseed

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

CZ PL
7 records

Pirol

Active

Brassica napus var. napus · Rapeseed

SAATBAU LINZ EGEN

PL UA
6 records

Blackberry

Active

Brassica napus var. napus · Rapeseed

RAGT 2n, FR

DE DK FR
6 records