Abstract
The goal of our research is to identify the role that specific essential nutrient elements play in the physiology of horticultural crops and then to apply the nutrient as a fertilizer to the foliage at key times in the phenology of the tree, i.e., a time when the demand for the nutrient is likely to be high, in order to stimulate a specific physiological process. This approach proved successful in the following completed studies. A single winter prebloom application of nitrogen as low-biuret urea made to the foliage of 30-year-old `Washington' navel orange ( Citrus sinensis L. Osbeck) trees at the time of irreversible commitment to flowering significantly increased yield and fruit number per tree for each of three consecutive years. In addition, the number of commercially valuable fruit with diameters of 6.1 to 8.0 cm significantly increased as yield increased ( r 2 =0.88). Applications of boron as sodium tetraborate to the foliage of a commercial orchard of `Hass' avocado ( Persea americana Mill.) trees at the cauliflower stage of inflorescence development (gametogenesis) increased the number of pollen tubes reaching the ovule, ovule viability and cumulative yield ( P ≤ 0.05). Additional examples from ongoing research also will be presented.
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Claims 3
Claim · model-written summary
A winter prebloom foliar urea application increased yield and fruit number per tree of Washington navel orange for three consecutive years.
- Taxon
- Citrus sinensis L. Osbeck
Citrus sinensise0 - Material
- Washingtone0
- Treatment
- winter prebloom application of nitrogen as low-biuret ureae3
- Outcome
- yield and fruit number per treee2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Washington' navel orange ( Citrus sinensis L. Osbeck)”
e3“A single winter prebloom application of nitrogen as low-biuret urea”
e2“significantly increased yield and fruit number per tree for each of three consecutive years”
Claim · model-written summary
The number of commercially valuable fruit of 6.1 to 8.0 cm diameter increased as yield increased.
- Taxon
- Citrus sinensis L. OsbeckCitrus sinensise0
- Organ / stage
- fruite4
- Outcome
- number of commercially valuable fruite4
- Direction
- increasede4
- Value
- r 2 =0.88e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Washington' navel orange ( Citrus sinensis L. Osbeck)”
e4“the number of commercially valuable fruit with diameters of 6.1 to 8.0 cm significantly increased as yield increased ( r 2 =0.88)”
Claim · model-written summary
Foliar boron as sodium tetraborate at the cauliflower stage increased pollen tubes reaching the ovule, ovule viability and cumulative yield of Hass avocado.
- Taxon
- Persea americana Mill.
Persea americanae5 - Organ / stage
- cauliflower stage of inflorescence developmente5
- Treatment
- boron as sodium tetraboratee5
- Outcome
- number of pollen tubes reaching the ovule, ovule viability and cumulative yielde5
- Direction
- increasede5
- Value
- P ≤ 0.05e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Applications of boron as sodium tetraborate to the foliage of a commercial orchard of `Hass' avocado ( Persea americana Mill.) trees at the cauliflower stage of inflorescence development (gametogenesis) increased the number of pollen tubes reaching the ovule, ovule viability and cumulative yield ( P ≤ 0.05)”
The same questions in other papers
boron atom · yield · Persea americana (avocado)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
nitrogen · yield · Citrus sinensis (sweet orange)Results differ
38 papers in the same direction as this paper · 8 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
44 papers more in this group
See all 48 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.