Abstract
Using cover crops in fallow periods of crop production is an important management tool for reducing nitrate leaching and therefore improving nitrogen availability for subsequent crops. We estimated the short-term effect of five cover crop species on the yield of successive spring barley (Hordeum vulgare L.) for two years in Estonia. The cover crop species used in the study were winter rye (Secale cereale L.), winter turnip rape (Brassica rapa spp. oleifera L.), forage radish (Raphanus sativus L. var. longipinnatus), hairy vetch (Vicia villosa Roth), and berseem clover (Trifolium alexandrinum L.). The results indicated that out of the five tested cover crops, forage radish and hairy vetch increased the yield of subsequent spring barley, whereas the other cover crops had no effect on barley yield. All cover crop species had low C:N ratios (11–17), suggesting that nitrogen (N) was available for barley early in the spring.
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Claims 4
Claim · model-written summary
Forage radish increased subsequent spring barley yield.
- Taxon
- spring barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- forage radishe0
- Outcome
- yield of subsequent spring barleye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“forage radish and hairy vetch increased the yield of subsequent spring barley”
Claim · model-written summary
Hairy vetch increased subsequent spring barley yield.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- hairy vetche0
- Outcome
- yield of subsequent spring barleye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“forage radish and hairy vetch increased the yield of subsequent spring barley”
Claim · model-written summary
The other tested cover crops had no effect on barley yield.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- the other cover cropse0
- Outcome
- barley yielde0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the other cover crops had no effect on barley yield”
Claim · model-written summary
All cover crop species had low C:N ratios of 11–17.
Verbatim
e0“All cover crop species had low C:N ratios (11–17)”
The same questions in other papers
Raphanus sativus · yield · Hordeum vulgare (barley)Results agree
1 paper in the same direction as this paper
- positive
cover crop · yield · Hordeum vulgare (barley)Results differ
7 papers in the same direction as this paper · 9 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.