Abstract
The effect of sowing rate (10-110 kg/ha) on the grain yield of barley (Hordeum vulgare L.) was determined from a total of 20 field experiments conducted in northern New South Wales from 1983 to 1986. Effects of sowing rate on kernel weight and grain protein percentage were also determined from 12 experiments conducted in 1985 and 1986. Two barley varieties were tested each year. In all years fallow plus winter rainfall was equal to or greater than average. Grain yield increased with higher sowing rates in most experiments, with the response curve reaching a plateau above 60-70 kg/ha. For 13 of the 40 variety x year combinations, grain yield fell at the highest sowing rates. Only in an experiment where lodging increased substantially with higher sowing rates was there a reduction in yield at a sowing rate of 60 kg/ha. The average sowing rate for which 5 kg grain was produced per kg of seed sown was 63 kg/ha. Grain protein percentage usually fell, and kernel weight invariably fell, with increasing sowing rate. Increasing sowing rates from the normal commercial rate of 35 kg/ha to a rate of 60 kg/ha typically increased grain yields by 100-400 kg/ha, decreased kernel weight by 0.4-2.0 mg, and decreased grain protein by up to 0.5 percentage points. In no case was the grain weight reduced to below malting specifications. It was concluded that sowing rates for barley in northern New South Wales should be increased to about 60 kg/ha.
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Claims 11
Claim · model-written summary
Barley grain yield generally increased with sowing rate and plateaued above 60-70 kg/ha.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree1 - Treatment
- higher sowing ratese0
- Outcome
- Grain yielde0
- Direction
- increasede0
- Value
- 60-70 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Grain yield increased with higher sowing rates in most experiments, with the response curve reaching a plateau above 60-70 kg/ha.”
e1“barley (Hordeum vulgare L.)”
Claim · model-written summary
At the highest sowing rates barley grain yield fell in 13 of 40 variety-year combinations.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- highest sowing ratese0
- Outcome
- grain yielde0
- Direction
- felle0
- Value
- 13 of the 40 variety x year combinationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For 13 of the 40 variety x year combinations, grain yield fell at the highest sowing rates.”
t0“barley”
Claim · model-written summary
Yield declined at 60 kg/ha only in an experiment where lodging substantially increased with sowing rate.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- sowing rate of 60 kg/hae0
- Outcome
- yielde0
- Direction
- reductione0
- Qualifier
- lodging increased substantiallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only in an experiment where lodging increased substantially with higher sowing rates was there a reduction in yield at a sowing rate of 60 kg/ha.”
t0“barley”
Claim · model-written summary
The average barley sowing rate yielding 5 kg grain per kg seed was 63 kg/ha.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- sowing ratee0
- Value
- 63 kg/hae0
- Qualifier
- 5 kg grain was produced per kg of seed sowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average sowing rate for which 5 kg grain was produced per kg of seed sown was 63 kg/ha.”
t0“barley”
Claim · model-written summary
Barley grain protein percentage usually declined as sowing rate increased.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- increasing sowing ratee0
- Outcome
- Grain protein percentagee0
- Direction
- felle0
- Qualifier
- usuallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain protein percentage usually fell, and kernel weight invariably fell, with increasing sowing rate.”
t0“barley”
Claim · model-written summary
Barley kernel weight invariably declined as sowing rate increased.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- increasing sowing ratee0
- Outcome
- kernel weighte0
- Direction
- felle0
- Qualifier
- invariablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain protein percentage usually fell, and kernel weight invariably fell, with increasing sowing rate.”
t0“barley”
Claim · model-written summary
Raising barley sowing rate from 35 to 60 kg/ha typically raised grain yield by 100-400 kg/ha.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- 60 kg/hae0
- Outcome
- grain yieldse0
- Direction
- increasede0
- Value
- 100-400 kg/hae0
- Comparator
- 35 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing sowing rates from the normal commercial rate of 35 kg/ha to a rate of 60 kg/ha typically increased grain yields by 100-400 kg/ha”
t0“barley”
Claim · model-written summary
Raising barley sowing rate from 35 to 60 kg/ha typically reduced kernel weight by 0.4-2.0 mg.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- 60 kg/hae0
- Outcome
- kernel weighte0
- Direction
- decreasede0
- Value
- 0.4-2.0 mge0
- Comparator
- 35 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing sowing rates from the normal commercial rate of 35 kg/ha to a rate of 60 kg/ha typically increased grain yields by 100-400 kg/ha, decreased kernel weight by 0.4-2.0 mg”
t0“barley”
Claim · model-written summary
Raising barley sowing rate from 35 to 60 kg/ha typically reduced grain protein by up to 0.5 percentage points.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- 60 kg/hae0
- Outcome
- grain proteine0
- Direction
- decreasede0
- Value
- up to 0.5 percentage pointse0
- Comparator
- 35 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing sowing rates from the normal commercial rate of 35 kg/ha to a rate of 60 kg/ha typically increased grain yields by 100-400 kg/ha, decreased kernel weight by 0.4-2.0 mg, and decreased grain protein by up to 0.5 percentage points.”
t0“barley”
Claim · model-written summary
Barley grain weight never fell below malting specifications.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- grain weighte0
- Direction
- no casee0
- Comparator
- malting specificationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In no case was the grain weight reduced to below malting specifications.”
t0“barley”
Claim · model-written summary
The authors recommend increasing barley sowing rates in northern New South Wales to about 60 kg/ha.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- sowing rates for barley in northern New South Wales should be increased to about 60 kg/hae0
- Value
- about 60 kg/hae0
- Setting
- northern New South Walese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was concluded that sowing rates for barley in northern New South Wales should be increased to about 60 kg/ha.”
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72 papers in the same direction as this paper · 21 in the opposite direction · 3 reporting no difference from an alternative
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See all 97 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.