Abstract
Soil and climatic conditions in Newfoundland are on the margins of agricultural capability, and almost all feed grain is imported. The overall objective of this work was to develop guidelines for the production of barley in Newfoundland, with the goal of establishing modern cropping recommendations. We conducted a 4‐year study near St. John’s to examine the effect of seeding rate and topdress ammonium nitrate (N) fertilization rate on Chapais six‐row barley ( Hordeum vulgare L.) yield components and grain yield. Increasing seeding rate from 200 to 380 seeds m –2 did not alter grain yield in any year. Increasing topdress fertilization from 0 to 60 kg N ha –1 increased spike density m –2 at harvest, resulting in linear increases in grain yield in all years. Highest N rates had greatest lodging in two years. Based on our results, agronomic recommendations for eastern Newfoundland now include barley seeding rates of 250 ± 50 seeds m –2 , with topdress applications up to at least 30 kg N ha –1 .
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Claims 6
Claim · model-written summary
Increasing seeding rate from 200 to 380 seeds m –2 did not change grain yield in any year.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- Increasing seeding rate from 200 to 380 seeds m –2e0
- Outcome
- grain yielde0
- Direction
- did not altere0
- Qualifier
- in any yeare0
- Comparator
- 200e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Increasing seeding rate from 200 to 380 seeds m –2 did not alter grain yield in any year.”
t0“Barley”
Claim · model-written summary
Increasing nitrogen topdress rate increased spike density at harvest.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- topdress fertilization from 0 to 60 kg N ha –1e0
- Outcome
- spike density m –2 at harveste0
- Direction
- increasede0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing topdress fertilization from 0 to 60 kg N ha –1 increased spike density m –2 at harvest, resulting in linear increases in grain yield in all years.”
t0“Barley”
Claim · model-written summary
Increasing nitrogen topdress rate linearly increased grain yield in all years.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- topdress fertilization from 0 to 60 kg N ha –1e0
- Outcome
- grain yielde0
- Direction
- linear increasese0
- Qualifier
- in all yearse0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing topdress fertilization from 0 to 60 kg N ha –1 increased spike density m –2 at harvest, resulting in linear increases in grain yield in all years.”
t0“Barley”
Claim · model-written summary
Highest nitrogen rates had greatest lodging in two years.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Highest N ratese0
- Outcome
- lodginge0
- Direction
- greateste0
- Qualifier
- in two yearse0
- Comparator
- N ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest N rates had greatest lodging in two years.”
t0“Barley”
Claim · model-written summary
The authors recommend barley seeding rates of 250 ± 50 seeds m –2 in eastern Newfoundland.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- barley seeding rates of 250 ± 50 seeds m –2e0
- Setting
- eastern Newfoundlande0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic recommendations for eastern Newfoundland now include barley seeding rates of 250 ± 50 seeds m –2 , with topdress applications up to at least 30 kg N ha –1 .”
Claim · model-written summary
The authors recommend topdress nitrogen up to at least 30 kg N ha –1.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- topdress applications up to at least 30 kg N ha –1e0
- Setting
- eastern Newfoundlande0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic recommendations for eastern Newfoundland now include barley seeding rates of 250 ± 50 seeds m –2 , with topdress applications up to at least 30 kg N ha –1 .”
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