Abstract
Abstract Conservation practices, such as reduced tillage and improved fertilizer use, are desirable from an environmental perspective and may yield economic benefits if production and quality are not impaired. This study was conducted to determine the effects of two N fertilization levels, 45 and 90 kg ha −1 (50 and 100% of normal grower rates), on yield and malting quality of spring barley ( Hordeum vulgare L.) under no‐till management. The study was conducted in 1986 and 1987 on a Palouse silt loam (fine‐silty, mixed mesic Pachic Ultic Haploxeroll). Seven Nordic (Europe) genotypes were compared with four U.S. Pacific Northwest (PNW) cultivars. The higher N level increased grain yield across genotypes in both years (17% in 1986, 5% in 1987), reduced the percentage of plump kernels (4%) in 1987, and did not affect test weight, 1000‐kernel weight, or percentage of thin kernels. All Nordic genotypes yielded less than the PNW cultivars except the Danish cultivar Nordal. Higher N increased total malt protein (7%) in both years and soluble malt protein (7%) in 1986. Higher N also significantly increased a ‐amylase (25%) and diastatic power (15%) in the malt, while malt extract was unaffected. Significant genotypic differences existed for all agronomic and malting parameters examined. Under no‐till, HJA 78003 was the only Nordic genotype that produced good quality malt, equaling the three PNW malting cutlivars under no‐till. The higher N rate produced slightly better yield and quality than the reduced rate. Therefore, reducing the N rate to half the normal grower rate (90‐45 kg ha −1 ) would probably not be recommended under these test conditions. Overall, the PNW cultivars tested outperformed the Nordic genotypes both in yield and malting quality. However, Nordal and HJA 78003 could prove useful in PNW barley breeding programs.
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Claims 14
Claim · model-written summary
The higher N level increased barley grain yield across genotypes by 17% in 1986 and 5% in 1987.
- Taxon
- spring barley
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Hordeum vulgaree0 - Treatment
- higher N levele1
- Outcome
- grain yielde1
- Direction
- increasede1
- Value
- 17% in 1986, 5% in 1987e1
- Setting
- Palouse silt loame2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“The higher N level increased grain yield across genotypes in both years (17% in 1986, 5% in 1987)”
e2“The study was conducted in 1986 and 1987 on a Palouse silt loam”
Claim · model-written summary
The higher N level reduced the percentage of plump kernels by 4% in 1987.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- higher N levele1
- Outcome
- percentage of plump kernelse2
- Direction
- reducede2
- Value
- 4%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“The higher N level increased grain yield across genotypes in both years (17% in 1986, 5% in 1987)”
e2“reduced the percentage of plump kernels (4%) in 1987”
Claim · model-written summary
The higher N level did not affect test weight, 1000-kernel weight or percentage of thin kernels.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- higher N levele1
- Outcome
- test weighte2
- Direction
- did not affecte2
- Qualifier
- 1000‐kernel weight, or percentage of thin kernelse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“The higher N level increased grain yield across genotypes in both years (17% in 1986, 5% in 1987)”
e2“did not affect test weight, 1000‐kernel weight, or percentage of thin kernels”
Claim · model-written summary
All Nordic barley genotypes yielded less than the PNW cultivars, except Nordal.
- Taxon
- spring barleyHordeum vulgaree0
- Material
- Nordic genotypese1
- Outcome
- yielde1
- Direction
- yielded lesse1
- Qualifier
- except the Danish cultivar Nordale1
- Comparator
- PNW cultivarse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“All Nordic genotypes yielded less than the PNW cultivars except the Danish cultivar Nordal”
Claim · model-written summary
The higher N level increased total malt protein by 7% in both years.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- Higher Ne1
- Outcome
- total malt proteine1
- Direction
- increasede1
- Value
- 7%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“Higher N increased total malt protein (7%) in both years”
Claim · model-written summary
The higher N level increased soluble malt protein by 7% in 1986.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- Higher Ne1
- Outcome
- soluble malt proteine2
- Direction
- increasede1
- Value
- 7%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“Higher N increased total malt protein (7%) in both years”
e2“soluble malt protein (7%) in 1986”
Claim · model-written summary
The higher N level significantly increased alpha-amylase activity by 25% in the malt.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- Higher Ne1
- Outcome
- amylasee2
- Direction
- increasede1
- Value
- 25%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“Higher N also significantly increased”
e2“amylase (25%)”
Claim · model-written summary
The higher N level significantly increased diastatic power by 15% in the malt.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- Higher Ne1
- Outcome
- diastatic powere2
- Direction
- increasede1
- Value
- 15%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“Higher N also significantly increased”
e2“diastatic power (15%) in the malt”
Claim · model-written summary
The higher N level left malt extract unaffected.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- Higher Ne1
- Outcome
- malt extracte2
- Direction
- unaffectede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“Higher N also significantly increased”
e2“malt extract was unaffected”
Claim · model-written summary
Barley genotypes differed significantly in all agronomic and malting parameters examined.
- Taxon
- spring barleyHordeum vulgaree0
- Outcome
- agronomic and malting parameterse1
- Qualifier
- Significant genotypic differencese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“Significant genotypic differences existed for all agronomic and malting parameters examined”
Claim · model-written summary
HJA 78003 was the only Nordic genotype to produce good quality malt, equaling the three PNW malting cultivars.
- Taxon
- spring barleyHordeum vulgaree0
- Material
- HJA 78003e1
- Outcome
- good quality malte1
- Direction
- equalinge2
- Comparator
- the three PNW malting cutlivarse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“HJA 78003 was the only Nordic genotype that produced good quality malt”
e2“equaling the three PNW malting cutlivars”
Claim · model-written summary
Nordal and HJA 78003 could be useful in PNW barley breeding programs.
- Taxon
- barleyHordeum vulgaree0
- Material
- Nordal and HJA 78003e0
- Outcome
- useful in PNW barley breeding programse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nordal and HJA 78003 could prove useful in PNW barley breeding programs”
Claim · model-written summary
Reducing the N rate to half the normal grower rate would probably not be recommended for barley under these test conditions.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- reducing the N rate to half the normal grower ratee1
- Qualifier
- would probably not be recommended under these test conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nordal and HJA 78003 could prove useful in PNW barley breeding programs”
e1“reducing the N rate to half the normal grower rate”
e2“would probably not be recommended under these test conditions”
Claim · model-written summary
PNW barley cultivars outperformed Nordic genotypes in both yield and malting quality.
- Taxon
- spring barleyHordeum vulgaree0
- Material
- PNW cultivarse1
- Outcome
- yield and malting qualitye1
- Direction
- outperformede1
- Comparator
- Nordic genotypese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring barley ( Hordeum vulgare L.)”
e1“the PNW cultivars tested outperformed the Nordic genotypes both in yield and malting quality”
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See all 299 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.