Abstract
Early winter-sown Rongotea wheat on five sites was treated with urea, ammonium sulphate, lime/ammonium nitrate and potassium nitrate at rates which supplied 75 kg N/ha at crop emergence, early tillering, late tillering or late stem elongation. Applications of fertilizer nitrogen improved grain yields significantly at four sites. Improved grain yields were associated with higher numbers of heads/m', higher numbers of grains/head and lower mean grain weight. Applications of fertilizer nitrogen made at late stem elongation were less effective than earlier applications. This was associated with both fewer heads/m' and grains/head. The effects of the different forms of fertilizer nitrogen on grain yields and individual components of grain yield did not differ significantly.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Fertilizer nitrogen significantly improved grain yield at four sites.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- fertilizer nitrogene0
- Outcome
- grain yieldse0
- Direction
- improvede0
- Qualifier
- four sitese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of fertilizer nitrogen improved grain yields significantly at four sites”
t0“wheat”
Claim · model-written summary
Improved yield was associated with more heads and grains per head and lower mean grain weight.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- graine0
- Outcome
- grain yieldse0
- Direction
- Improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improved grain yields were associated with higher numbers of heads/m', higher numbers of grains/head and lower mean grain weight”
t0“wheat”
Claim · model-written summary
Nitrogen at late stem elongation was less effective than earlier applications.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- fertilizer nitrogen made at late stem elongatione0
- Outcome
- less effectivee0
- Direction
- less effectivee0
- Comparator
- earlier applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of fertilizer nitrogen made at late stem elongation were less effective than earlier applications”
t0“wheat”
Claim · model-written summary
Fertilizer forms did not significantly differ in yield or yield components.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- different forms of fertilizer nitrogene0
- Outcome
- grain yields and individual components of grain yielde0
- Direction
- did not differe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of the different forms of fertilizer nitrogen on grain yields and individual components of grain yield did not differ significantly”
t0“wheat”
The same questions in other papers
nitrogen · yield · Triticum aestivum (wheat)Positive and negative results
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3,114 papers in the same direction as this paper · 284 in the opposite direction · 39 reporting no difference from an alternative
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See all 3,438 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.