Abstract
Young, fully expanded leaves of 'Hass' avocado on clonal 'Duke 7' rootstock, 2 years from budding, were used to assess changes in leaf NH3-NH4 content. Foliar application of 1.5 g low biuret urea per tree failed to increase the leaf NH3-NH4 content: compare 23.6 ± 5.8 versus 20.1 ± 5.7 μg NH3-NH4 per g fr. wt. leaf tissue (x ± STD. DEV., N = 3 trees per treatment) from trees treated with and without urea, respectively (Nevin and Lovatt, 1989). Foliar application of 1.5 g of low biuret urea per tree to 5-yearold rooted cuttings of the 'Washington' navel orange of comparable size increased the leaf NH3-NH4 content of the trees subjected to 4, 6, or 8 weeks of low temperature 1.7-, 2.2-, and 1.2-fold, respectively.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
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
Foliar low biuret urea did not increase leaf NH3-NH4 content in Hass avocado, as reported from earlier work.
- Taxon
- avocado
Persea americanae2 - Treatment
- Foliar application of 1.5 g low biuret urea per treee0
- Outcome
- leaf NH3-NH4 contente0
- Direction
- failed to increasee0
- Comparator
- without ureae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of 1.5 g low biuret urea per tree failed to increase the leaf NH3-NH4 content”
e1“from trees treated with and without urea, respectively (Nevin and Lovatt, 1989)”
e2“Young, fully expanded leaves of 'Hass' avocado on clonal 'Duke 7' rootstock”
Claim · model-written summary
Foliar low biuret urea increased leaf NH3-NH4 content of navel orange 1.7-fold after 4 weeks of low temperature.
- Taxon
- navel orange
Citrus sinensise3 - Treatment
- Foliar application of 1.5 g of low biuret urea per treee3
- Outcome
- leaf NH3-NH4 contente3
- Direction
- increasede3
- Value
- 1.7-e3
- Qualifier
- 4, 6, or 8 weeks of low temperaturee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Foliar application of 1.5 g of low biuret urea per tree to 5-yearold rooted cuttings of the 'Washington' navel orange of comparable size increased the leaf NH3-NH4 content of the trees subjected to 4, 6, or 8 weeks of low temperature 1.7-, 2.2-, and 1.2-fold”
Claim · model-written summary
Foliar low biuret urea increased leaf NH3-NH4 content of navel orange 2.2-fold after 6 weeks of low temperature.
- Taxon
- navel orangeCitrus sinensise3
- Treatment
- Foliar application of 1.5 g of low biuret urea per treee3
- Outcome
- leaf NH3-NH4 contente3
- Direction
- increasede3
- Value
- 2.2-e3
- Qualifier
- 4, 6, or 8 weeks of low temperaturee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Foliar application of 1.5 g of low biuret urea per tree to 5-yearold rooted cuttings of the 'Washington' navel orange of comparable size increased the leaf NH3-NH4 content of the trees subjected to 4, 6, or 8 weeks of low temperature 1.7-, 2.2-, and 1.2-fold”
Claim · model-written summary
Foliar low biuret urea increased leaf NH3-NH4 content of navel orange 1.2-fold after 8 weeks of low temperature.
- Taxon
- navel orangeCitrus sinensise3
- Treatment
- Foliar application of 1.5 g of low biuret urea per treee3
- Outcome
- leaf NH3-NH4 contente3
- Direction
- increasede3
- Value
- 1.2-folde3
- Qualifier
- 4, 6, or 8 weeks of low temperaturee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Foliar application of 1.5 g of low biuret urea per tree to 5-yearold rooted cuttings of the 'Washington' navel orange of comparable size increased the leaf NH3-NH4 content of the trees subjected to 4, 6, or 8 weeks of low temperature 1.7-, 2.2-, and 1.2-fold”
The same questions in other papers
nitrogen · molecular: metabolites · Citrus sinensis (sweet orange)Positive and negative results
2 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- no effect
3 papers more in this group
See all 7 papers →application · molecular: metabolites · Citrus sinensis (sweet orange)Positive and negative results
12 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
11 papers more in this group
See all 15 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.