Abstract
In a study with no supplemental nitrogen (N) fertilizer on apple (Malus dornestica) and pear (em communis L.) trees, tree growth, leaf N(%), and fruit production were greatly improved with nearly complete weed control from herbicide sprays in tree-row strips. Moderate or high rates of supplemental N fertilizer overcame interference (competition) from weeds and improved tree vigor in plots with no herbicidal treatments. Little or no gain in tree growth and fruit size was obtained with supplemental N in- plots where weeds were controlled. In most cases, supplemental N fertilizer increased fruit production and leaf N concentrations, but the incidence of bitter pit of apples was increased. Fruit quality was influenced by weed control and N fertilizer treatments.
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Claims 6
Claim · model-written summary
Nearly complete weed control improved tree growth, leaf nitrogen and fruit production in apple and pear without supplemental nitrogen.
- Taxon
- apple (Malus dornestica) and pear (em communis L.)
Malus domestica_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise0 - Treatment
- nearly complete weed control from herbicide sprays in tree-row stripse0
- Outcome
- tree growth, leaf N(%), and fruit productione0
- Direction
- greatly improvede0
- Qualifier
- no supplemental nitrogen (N) fertilizere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“no supplemental nitrogen (N) fertilizer on apple (Malus dornestica) and pear (em communis L.) trees, tree growth, leaf N(%), and fruit production were greatly improved with nearly complete weed control from herbicide sprays in tree-row strips”
Claim · model-written summary
Supplemental nitrogen overcame weed competition and improved tree vigor without herbicide.
- Taxon
- apple (Malus dornestica) and pear (em communis L.)Malus domesticaPyrus communise0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate or high rates of supplemental N fertilizer overcame interference (competition) from weeds and improved tree vigor in plots with no herbicidal treatments”
e1“apple (Malus dornestica) and pear (em communis L.) trees”
Claim · model-written summary
Supplemental nitrogen yielded little or no tree growth or fruit size gain when weeds were controlled.
- Taxon
- apple (Malus dornestica) and pear (em communis L.)Malus domesticaPyrus communise0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little or no gain in tree growth and fruit size was obtained with supplemental N in- plots where weeds were controlled”
e1“apple (Malus dornestica) and pear (em communis L.) trees”
Claim · model-written summary
Supplemental nitrogen generally increased fruit production and leaf nitrogen concentrations.
- Taxon
- apple (Malus dornestica) and pear (em communis L.)Malus domesticaPyrus communise0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In most cases, supplemental N fertilizer increased fruit production and leaf N concentrations”
e1“apple (Malus dornestica) and pear (em communis L.) trees”
Claim · model-written summary
Supplemental nitrogen increased apple bitter pit incidence.
- Taxon
- applesMalus domesticae0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“incidence of bitter pit of apples was increased”
e1“supplemental N fertilizer increased fruit production and leaf N concentrations”
Claim · model-written summary
Weed control and nitrogen treatments influenced fruit quality.
- Taxon
- apple (Malus dornestica) and pear (em communis L.)Malus domesticaPyrus communise0e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit quality was influenced by weed control and N fertilizer treatments”
e1“apple (Malus dornestica) and pear (em communis L.) trees”
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See all 178 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.