Abstract
Field experiments were conducted at two locations (Clayton and Jackson Springs, NC) to determine the influence of vegetation-free strip width (VFSW) and irrigation on newly planted peach growth and yield in a low-density orchard with a volunteer weedy ground cover. The experiments included VFSW of 0, 0.6, 1.2, 2.4, 3, or 3.6 m under irrigated or nonirrigated conditions. Seasonal variation in the orchard floor vegetation was observed as different weed species reported in summer and winter. However, this difference was not apparent with respect to VFSF and irrigation. At Jackson Springs, NC, the predicted irrigated VFSW which would produce the same trunk cross-sectional area (TCSA) as the grower standard (3-m nonirrigated) was 1.5, 1.3, and 0.8 m for one-, two-, and three-year-old trees, respectively. The predicted irrigated VFSW which would produce the same yield as the grower standard was 1.16 m. At Clayton, TCSA and fruit yield were not different by irrigation, but did increase linearly with VFSW. At both locations, leaf nitrogen (N) concentration was lower in irrigated trees than nonirrigated trees. Leaf N, leaf area, and SPAD were positively related to VFSW at Jackson Springs. In contrast, leaf N concentration was not different by VFSW at Clayton. However, leaf area and SPAD were positively related to VFSW at Clayton. These results suggest that a 1.5 m VFSW combined with proper irrigation and fertilization will produce tree growth and yield in newly planted orchard with volunteer weedy vegetation similar to the current grower standard in the southeastern USA.
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Claims 11
Claim · model-written summary
Orchard weed species differed between summer and winter.
Verbatim
e0“Seasonal variation in the orchard floor vegetation was observed as different weed species reported in summer and winter”
Claim · model-written summary
The seasonal vegetation difference was not apparent by strip width or irrigation.
Verbatim
e0“this difference was not apparent with respect to VFSF and irrigation”
e1“different weed species”
Claim · model-written summary
At Jackson Springs, predicted irrigated strip widths matching the grower standard trunk area were 1.5, 1.3 and 0.8 m for trees aged one, two and three years.
- Taxon
- Peach
Prunus persicat0 - Outcome
- trunk cross-sectional area (TCSA)e0
- Value
- 1.5, 1.3, and 0.8 me0
- Comparator
- grower standarde0
- Setting
- Jackson Springs, NCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Jackson Springs, NC, the predicted irrigated VFSW which would produce the same trunk cross-sectional area (TCSA) as the grower standard (3-m nonirrigated) was 1.5, 1.3, and 0.8 m for one-, two-, and three-year-old trees, respectively”
t0“Peach”
Claim · model-written summary
At Jackson Springs, a predicted irrigated strip width of 1.16 m matched grower-standard yield.
- Taxon
- PeachPrunus persicat0
- Outcome
- yielde0
- Value
- 1.16 me0
- Comparator
- grower standarde0
- Setting
- Jackson Springs, NCe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The predicted irrigated VFSW which would produce the same yield as the grower standard was 1.16 m”
t0“Peach”
e1“At Jackson Springs, NC”
Claim · model-written summary
At Clayton, irrigation did not alter trunk cross-sectional area or fruit yield.
- Taxon
- PeachPrunus persicat0
- Treatment
- irrigatione0
- Outcome
- TCSA and fruit yielde0
- Direction
- not differente0
- Setting
- Claytone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Clayton, TCSA and fruit yield were not different by irrigation”
t0“Peach”
Claim · model-written summary
At Clayton, trunk area and fruit yield rose linearly with vegetation-free strip width.
- Taxon
- PeachPrunus persicat0
- Treatment
- VFSWe0
- Outcome
- TCSA and fruit yielde0
- Direction
- increase linearlye0
- Setting
- Claytone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TCSA and fruit yield were not different by irrigation, but did increase linearly with VFSW”
t0“Peach”
e1“At Clayton”
Claim · model-written summary
Irrigated trees had lower leaf nitrogen than nonirrigated trees at both locations.
- Taxon
- PeachPrunus persicat0
- Treatment
- irrigated treese0
- Outcome
- leaf nitrogen (N) concentratione0
- Direction
- lowere0
- Comparator
- nonirrigated treese0
- Setting
- both locationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At both locations, leaf nitrogen (N) concentration was lower in irrigated trees than nonirrigated trees”
t0“Peach”
Claim · model-written summary
At Jackson Springs, leaf nitrogen, leaf area and SPAD were positively related to strip width.
- Taxon
- PeachPrunus persicat0
- Treatment
- VFSWe0
- Outcome
- Leaf N, leaf area, and SPADe0
- Direction
- positively relatede0
- Setting
- Jackson Springse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf N, leaf area, and SPAD were positively related to VFSW at Jackson Springs”
t0“Peach”
Claim · model-written summary
At Clayton, leaf nitrogen concentration did not differ by strip width.
- Taxon
- PeachPrunus persicat0
- Treatment
- VFSWe0
- Outcome
- leaf N concentratione0
- Direction
- not differente0
- Setting
- Claytone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf N concentration was not different by VFSW at Clayton”
t0“Peach”
Claim · model-written summary
At Clayton, leaf area and SPAD were positively related to strip width.
- Taxon
- PeachPrunus persicat0
- Treatment
- VFSWe0
- Outcome
- leaf area and SPADe0
- Direction
- positively relatede0
- Setting
- Claytone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area and SPAD were positively related to VFSW at Clayton”
t0“Peach”
Claim · model-written summary
The authors suggest a 1.5 m strip with irrigation and fertilization for growth and yield comparable to the grower standard.
- Taxon
- PeachPrunus persicat0
- Treatment
- 1.5 m VFSW combined with proper irrigation and fertilizatione0
- Outcome
- tree growth and yielde0
- Comparator
- current grower standarde0
- Setting
- southeastern USAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 1.5 m VFSW combined with proper irrigation and fertilization will produce tree growth and yield in newly planted orchard with volunteer weedy vegetation similar to the current grower standard in the southeastern USA”
t0“Peach”
The same questions in other papers
irrigation · yield · Prunus persica (peach)Results differ
23 papers in the same direction as this paper · 31 in the opposite direction
- positive
- positive
- positive
51 papers more in this group
See all 55 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.