YIELD POTENTIAL IN ORGANIC AND CONVENTIONAL
Type de document
report
Langue source
-- Langue source --
Titre
YIELD POTENTIAL IN ORGANIC AND CONVENTIONAL
Titre français
Titre anglais
Auteur(s)
- BORGEN Anders
- SARUP Pernille
- HALDRUP Hans
Editeur(s)
Autre(s)
Id
NQCFS46Q
Version
3307
Date ajout
13 avril 2021 16:53
Date modification
13 avril 2021 16:53
Résumé
According to the EU seed regulation, cereal seed need to be able to germinate at
least 85%, and in Denmark national standards requires a germination of 90-95%
depending on the crop species. However, even when seed meets these standards,
differences in germination vigour measured as germination speed exist. Pedersen
et al (1993) has shown that yield may differ up to 16% caused by differences in
seed vigour in winter sown cereals, and also in spring barley it is shown that
yield may differ up to 14% in seed lots that still meets the elevated Danish
requirements for certified seed under conventional growing conditions
(Emmeluth 1990, 1991). Under organic conditions, the effects is likely to be
even higher, since especially weed competition is affected by the speed of
emergence and early growth rate of the seedlings (Rasmussen and Rasmussen
2000). Müller (2013) showed that organic barley seed yielded 10-25% less
compared with conventional seed of the same variety.
Note
None
CRAW tags
- AB - Modalité bio
- FREDO semence
- FREDO étude des variétés
- GEO Danemark
- GEO Europe
- germination
- réglementation
- seed production
- trial
WEB tags
Pages
2
Date caractères
11/2020
Date publication
1 novembre 2020