Yield variability trends of winter wheat and spring barley grown during 1932–2019 in the Askov Long-term Experiment
Type de document
journalArticle
Langue source
-- Langue source --
Titre
Yield variability trends of winter wheat and spring barley grown during 1932–2019 in the Askov Long-term Experiment
Titre français
Titre anglais
Auteur(s)
- MACHOLDT J.
- HADASCH S.
- PIEPHO H. -P.
- RECKLING M.
- TAGHIZADEH-TOOSI A.
- CHRISTENSEN B. T.
Editeur(s)
Autre(s)
Id
V5AQM5S4
Version
3448
Date ajout
22 avril 2021 16:18
Date modification
22 avril 2021 16:18
Résumé
Designing cropping systems with low yield variability (or high yield stability) is becoming increasingly important because of the ongoing climatic and agronomic challenges. The trends in yield variability under various agronomic managements can be evaluated by conducting long-term experiments. By using a novel statistical analysis method, we estimated the long-term yield variability trends for winter wheat and spring barley grown in the Askov Long-term Experiment (Denmark) with different rates of mineral fertilizers (½, 1, and 1½ NPK) and animal manure (½, 1, and 1½ AM). Yield data from 1932 to 2019 were analyzed using a mixed model approach with restricted maximum likelihood (REML)-based parameter estimates. Across all nutrient treatments, winter wheat showed lower temporal yield variability than spring barley in the first decade. However, particularly, since 2006, the wheat yield variability trend increased mainly under treatments with higher NPK rates (1 and 1½). Spring barley also showed an increasing trend in yield variability; however, compared to wheat, this trend was less pronounced. Therefore, wheat yields were less stable than barley yields during the last decade. Wheat and barley yields fluctuated more under higher NPK rates (1 and 1½) than under a reduced rate (½ NPK). In general, animal manure provided more stable yields than NPK for wheat as well as for barley. The long-term trends in yield variability of cropping systems with winter wheat and spring barley were affected by the choice of crop, nutrient source and application rate, and increasing climatic variability.
Note
None
CRAW tags
- AB - Utile à l'AB
- GEO Danemark
WEB tags
- cereals
- climate
- mixed model
- spring-sown crop
- winter-sown crop
- yield stability
Titre de la publication
Field Crops Research
Volume
264
Pages
108083
Date caractères
May 1, 2021
Date publication
1 mai 2021
Doi
10.1016/j.fcr.2021.108083
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Issn
0378-4290
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