Abstract
Undersowing catch crops (CCs) in cereals provides many environmental benefits and potentially contributes to building agricultural resilience to climate change. The increasing soil water deficit due to global warming is becoming a challenge for the sustainability of Central European agriculture. Some of the multiple functions of CCs may be altered under water shortage. Two pot experiments were conducted in Poland to assess the effect of water deficit on N, P, K, and Mg accumulated in post-harvest residues left by spring barley undersown with Italian ryegrass or red clover, and in the soil under these crops. In both experiments, barley grown alone provided a reference, and two levels of water supply were adopted: higher (sufficient for barley) and lower (reduced by 50%). Under water deficit, CCs undersown in spring barley maintained their function of capturing and storing nutrients. Post-harvest residues of barley undersown with CC and stressed with water shortage accumulated the same or higher amounts of N, P, K, and Mg than residues of barley grown alone under sufficient water supply. Soil nutrient contents were negatively correlated with crop biomass. Further research with other CC species and studies based on field experiments under rainout shelters are recommended.
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Claims 4
Claim · model-written summary
Under water deficit, catch crops undersown in barley retained their nutrient capture and storage function.
- Taxon
- spring barley
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Hordeum vulgaree0 - Outcome
- function of capturing and storing nutrientse0
- Qualifier
- Under water deficite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Under water deficit, CCs undersown in spring barley maintained their function of capturing and storing nutrients”
Claim · model-written summary
Under water shortage, barley residues with catch crops accumulated the same or higher amounts of N, P, K and Mg than residues from barley alone with sufficient water.
- Taxon
- barleyHordeum vulgaree0
- Organ / stage
- Post-harvest residuese0
- Treatment
- undersown with CC and stressed with water shortagee0
- Outcome
- amounts of N, P, K, and Mge0
- Direction
- same or highere0
- Comparator
- barley grown alone under sufficient water supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Post-harvest residues of barley undersown with CC and stressed with water shortage accumulated the same or higher amounts of N, P, K, and Mg than residues of barley grown alone under sufficient water supply”
Claim · model-written summary
Soil nutrient contents were negatively correlated with crop biomass.
- Taxon
- spring barleyHordeum vulgaree1
- Organ / stage
- crop biomasse0
- Outcome
- Soil nutrient contentse0
- Direction
- negatively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil nutrient contents were negatively correlated with crop biomass”
e1“spring barley undersown with Italian ryegrass or red clover”
Claim · model-written summary
The authors recommend field experiments under rainout shelters with other catch crop species.
- Taxon
- spring barleyHordeum vulgaree1
- Outcome
- field experiments under rainout shelterse0
- Qualifier
- other CC speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further research with other CC species and studies based on field experiments under rainout shelters are recommended”
e1“spring barley undersown with Italian ryegrass or red clover”
The same questions in other papers
drought · nutrient: content · Hordeum vulgare (barley)Positive and negative results
2 papers in the same direction as this paper · 17 in the opposite direction
- no effect
- negative
- negative
16 papers more in this group
See all 20 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.