Abstract
Within-row weed management of highbush blueberry ( Vaccinium corymbosum L.) is reliant upon herbicide applications. However, in organic production, herbicides are typically not permitted and alternative methods must be used. The impact of thick (25-cm) mulch applications on weed pressure in an organic production system was initiated at a commercial operation in Nova Scotia, Canada, during 2005. A split-plot experimental design was used with five blocks (replications), six treatments, and five plants per split plot (cv. Duke). The whole-plot factor consisted of mulch/fertility treatments and included: i) control (no amendment); ii) ammonium sulphate fertilizer (30 kg·ha -1 N); iii) pelletized poultry manure (60 kg·ha -1 N); iv) pine needles (80 t·ha -1 ); v) horse manure and sawdust compost (550 t·ha -1 ); and vi) seafood waste compost (360 t·ha -1 ). The split-plot factor consisted of level of hand weeding (–/+). Weed control was assessed by sampling percent ground cover and weed shoot biomass in three 0.25-m 2 quadrats in nonweeded subplots. Blueberry leaf N content, plant canopy volume, and berry yield (fresh weight and number) were recorded. The manure/sawdust compost and pine needle treatments had the lowest weed biomass and percent ground cover values, thereby providing the best weed control. Weed shoot biomass, blueberry leaf N, plant canopy volume, and berry yield were greatest in the seafood waste compost treatment. Results from this preliminary study indicate the potential of using these groundcover treatments to improve organic cultural management practices.
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Claims 5
Claim · model-written summary
Manure and sawdust compost gave among the lowest weed biomass and ground cover values.
- Taxon
- Highbush Blueberry
Vaccinium corymbosumt0 - Treatment
- manure/sawdust composte0
- Interactor
- weede0weed
- Outcome
- weed biomass and percent ground covere0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The manure/sawdust compost and pine needle treatments had the lowest weed biomass and percent ground cover values”
t0“Highbush Blueberry”
Claim · model-written summary
Pine needles gave among the lowest weed biomass and ground cover values.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- pine needle treatmentse0
- Interactor
- weede0weed
- Outcome
- weed biomass and percent ground covere0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The manure/sawdust compost and pine needle treatments had the lowest weed biomass and percent ground cover values”
t0“Highbush Blueberry”
Claim · model-written summary
Seafood waste compost had the greatest blueberry leaf nitrogen.
- Taxon
- blueberrye0
- Organ / stage
- leafe0
- Treatment
- seafood waste compost treatmente0
- Outcome
- blueberry leaf Ne0
- Direction
- greateste0
Not reportedComparator
Verbatim
e0“Weed shoot biomass, blueberry leaf N, plant canopy volume, and berry yield were greatest in the seafood waste compost treatment”
Claim · model-written summary
Seafood waste compost had the greatest plant canopy volume.
- Taxon
- blueberrye0
- Treatment
- seafood waste compost treatmente0
- Outcome
- plant canopy volumee0
- Direction
- greateste0
Not reportedComparator
Verbatim
e0“Weed shoot biomass, blueberry leaf N, plant canopy volume, and berry yield were greatest in the seafood waste compost treatment”
Claim · model-written summary
Seafood waste compost had the greatest berry yield.
Not reportedComparator
Verbatim
e0“Weed shoot biomass, blueberry leaf N, plant canopy volume, and berry yield were greatest in the seafood waste compost treatment”
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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.