7863: A suppressive index for spring barley varieties
(2006) A suppressive index for spring barley varieties. [preprint]
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Summary
Several studies have shown marked differences among varieties in their ability to suppress weed growth. Many of these studies have concluded that crop competitiveness cannot be measured with just a single growth trait, due to the complex interactions between crop and weeds during the dynamic development of canopy and root architecture. However, in a regular screening programme for variety competitiveness only a few, preferentially non-destructive, measurements of the most important growth traits can be afforded. In this study we measured the weed suppressive ability of 79 varieties in two ways: 1) directly, by weed cover assessments under weedy conditions, and 2) indirectly, by sensor measurements of varietal growth traits (early growth rate, leaf angle, and culm length) under weed-free conditions. Based on the growth trait measurements, we were successful at indexing the spring barley varieties, which ranged between 12% and 55% reduction of the maximal weed cover; the index was highly correlated with the observed weed suppressive ability of the varieties.
| Document Language: | English |
|---|---|
| Keywords: | Varieties; crop-weed interaction; competitive ability; variety testing; non-linear mixed modelling; weed suppression; sensor-based measurements; spring barley; Hordeum vulgare L. |
| Subject Areas: | Crop husbandry > Crop combinations and interactions Crop husbandry > Weed management Crop husbandry > Breeding, genetics and propagation |
| Research affiliation: | Denmark > DARCOF II (2000-2005) > VI.2 (BAR_OF) Characteristics of spring barley varieties for organic farming Denmark > AU - Faculty of Agricultural Sciences Denmark > SOAR - Research School for Organic Agriculture and Food Systems |
| Funding Part: | 75-100% |
| Total budget (Euro): | 0 |
| Orgprints ID Number: | 7863 |
| Contact: | Hansen, Preben Klarskov |
| Deposited On: | 04 April 2006 |
| EPrint Type: | Preprint |
| Peer Review Status: | Submitted for peer-review but not yet accepted |
Available Versions of this Item
- A suppressive index for spring barley varieties (deposited 04 April 2006) [Currently Displayed]
- A weed suppressive index for spring barley (Hordeum vulgare L.) varieties (deposited 01 October 2007)
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