home    about    browse    search    latest    help 
Login | Create Account

Will growth characteristics describe yield differently in different environments?

Kristensen, Kristian and Ericson, Lars (2007) Will growth characteristics describe yield differently in different environments? In: Østergård, Hanne; Backes, Gunter and Kovacs, Geza (Eds.) Procedings of the COST SUSVAR workshop on Varietal characteristics of cereals in different growing systems with special emphasis on below ground traits, pp. 45-48.

[img]
Preview
PDF - Published Version
2436Kb

Summary

The growing interest in organic farming has increased the interest in examining if different growing characteristics among varieties would explain differences in yield differently in conventional compared to organic systems. This work will focus on that question. The analyses are performed using data from trials with spring barley in Denmark and Sweden. Growing characteristics on diseases, volume weight, grain weight, and lodging will be included in the work.
The growing characteristics are included as covariates to see how much of the variation caused by varieties and interaction with varieties that can be explained by the growing characteristic. The model is setup in order to estimate simultaneously the effect of the growing characteristics and the possible interactions between those that can be expected to interact.
The analyses showed that the relation between yield and the growth characteristics volume weight or grain weight depended on the growing system but in different ways in the two countries. The relation between yield and the disease powdery mildew were stronger in the conventional grown trials than in the organic grown trials. There was a tendency for the same difference to apply for the diseases leaf rust, net blotch and scald in Danish trials and net blotch in Northern Sweden, but not for scald in Northern Sweden. None of the tendencies were significant at the 5% level.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Subjects: Farming Systems
Crop husbandry
Research affiliation: Denmark > DARCOF II (2000-2005) > VI.2 (BAR_OF) Characteristics of spring barley varieties for organic farming
Denmark > AU - Aarhus University > AU, DJF - Faculty of Agricultural Sciences
ISBN:978-87-550-3648-2
Deposited By: Kristensen, Senior scientist Kristian
ID Code:20888
Deposited On:13 Jun 2012 14:25
Last Modified:13 Jun 2012 14:25
Document Language:English
Status:Published
Refereed:Not peer-reviewed

Repository Staff Only: item control page