Abstract
Yellow nutsedge is a problematic weed in plasticulture strawberry because herbicides and fumigants currently used in California provide little to no control and because nutsedge shoots easily penetrate standard low-density polyethylene (LDPE) mulch to rapidly establish and compete with the crop. Field studies were conducted at two California locations near Oxnard and Camarillo from 2007 to 2009 to evaluate yellow nutsedge control with physical barriers. Nutsedge germinated in both autumn and spring through LDPE mulch alone, but paper placed between two layers of standard 0.15-mm black LDPE mulch, weed barrier fabric commonly used in landscapes placed under LDPE mulch, and Tyvek Home Wrap placed under LDPE mulch suppressed nutsedge emergence. In 1 yr, the size of strawberry plants grown with weed barrier fabric was reduced 23% compared with the other treatments and the number of marketable fruit in the third month of harvest was reduced 20% compared with LDPE mulch alone, likely because inadequately cut planting holes in this barrier restricted plant growth. Estimated costs for barrier treatments ranged from $5,000 to $12,000 ha −1 compared with estimated hand-weeding costs of up to $24,000 ha −1 . In 2007 to 2008 barrier treatments reduced the number of wind-dispersed weeds that commonly land and germinate in strawberry planting holes 67% compared with LDPE mulch alone. Removing the barriers at the end of the two seasons revealed that nutsedge plants sprouted but failed to grow and produce new tubers under the barriers. This observation suggests that nutsedge-impermeable barriers may aid in depletion of the soil tuber bank and therefore can be an effective tool in managing nutsedge for the length of the growing season.
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Claims 6
Claim · model-written summary
Paper placed between LDPE mulch layers suppressed yellow nutsedge emergence compared with LDPE mulch alone
- Taxon
- Fragaria × ananassa
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- paper placed between two layers of standard 0.15-mm black LDPE mulche1
- Interactor
- Cyperus esculentus
Cyperus esculentust0weed - Outcome
- nutsedge emergencee1
- Direction
- suppressede1
- Comparator
- LDPE mulch alonee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e1“Nutsedge germinated in both autumn and spring through LDPE mulch alone, but paper placed between two layers of standard 0.15-mm black LDPE mulch, weed barrier fabric commonly used in landscapes placed under LDPE mulch, and Tyvek Home Wrap placed under LDPE mulch suppressed nutsedge emergence”
t0“Barriers Prevent Emergence of Yellow Nutsedge (Cyperus esculentus) in Annual Plasticulture Strawberry (Fragaria × ananassa)”
Claim · model-written summary
Weed barrier fabric reduced strawberry plant size by 23% compared with the other treatments
- Taxon
- Fragaria × ananassaFragaria ×ananassat0
- Treatment
- weed barrier fabrice2
- Outcome
- size of strawberry plantse2
- Direction
- reducede2
- Value
- 23%e2
- Comparator
- the other treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In 1 yr, the size of strawberry plants grown with weed barrier fabric was reduced 23% compared with the other treatments and the number of marketable fruit in the third month of harvest was reduced 20% compared with LDPE mulch alone”
t0“Barriers Prevent Emergence of Yellow Nutsedge (Cyperus esculentus) in Annual Plasticulture Strawberry (Fragaria × ananassa)”
Claim · model-written summary
Barrier treatments reduced marketable fruit number by 20% compared with LDPE mulch alone
- Taxon
- Fragaria × ananassaFragaria ×ananassat0
- Outcome
- number of marketable fruite2
- Direction
- reducede2
- Value
- 20%e2
- Comparator
- LDPE mulch alonee2
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In 1 yr, the size of strawberry plants grown with weed barrier fabric was reduced 23% compared with the other treatments and the number of marketable fruit in the third month of harvest was reduced 20% compared with LDPE mulch alone”
t0“Barriers Prevent Emergence of Yellow Nutsedge (Cyperus esculentus) in Annual Plasticulture Strawberry (Fragaria × ananassa)”
Claim · model-written summary
Barrier treatments reduced wind-dispersed weed germination in planting holes by 67% compared with LDPE mulch alone
- Taxon
- strawberryFragaria ×ananassae4
- Treatment
- barrier treatmentse4
- Outcome
- number of wind-dispersed weedse4
- Direction
- reducede4
- Value
- 67%e4
- Comparator
- LDPE mulch alonee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In 2007 to 2008 barrier treatments reduced the number of wind-dispersed weeds that commonly land and germinate in strawberry planting holes 67% compared with LDPE mulch alone”
Claim · model-written summary
Under the barriers nutsedge sprouted but failed to grow and produce new tubers
- Taxon
- Fragaria × ananassaFragaria ×ananassat0
- Interactor
- Cyperus esculentusCyperus esculentust0weed
- Outcome
- failed to grow and produce new tuberse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Removing the barriers at the end of the two seasons revealed that nutsedge plants sprouted but failed to grow and produce new tubers under the barriers”
t0“Barriers Prevent Emergence of Yellow Nutsedge (Cyperus esculentus) in Annual Plasticulture Strawberry (Fragaria × ananassa)”
Claim · model-written summary
Nutsedge-impermeable barriers may be an effective tool for managing nutsedge
- Taxon
- Fragaria × ananassaFragaria ×ananassat0
- Outcome
- effective tool in managing nutsedgee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“This observation suggests that nutsedge-impermeable barriers may aid in depletion of the soil tuber bank and therefore can be an effective tool in managing nutsedge for the length of the growing season”
t0“Barriers Prevent Emergence of Yellow Nutsedge (Cyperus esculentus) in Annual Plasticulture Strawberry (Fragaria × ananassa)”
The same questions in other papers
trap barrier · growth · Fragaria x ananassa (strawberry)Positive and negative results
8 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.