Abstract
Replant soil fumigation with mixtures of methyl bromide (MeBr) and chloropicrin (trichloronitromethane) is a standard practice for pest and disease control in fruit crop nurseries in California. The proposed phase-out of MeBr by the year 2001 requires that alternative soil sterilants be studied for nursery use. Therefore, on 5 April, 1993, three preplant soil treatments were applied to new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha: 2) chloropicrin, a possible MeBr substitute. at 140 kg/ha: and 3) nonfumigation. The experimental design was a RCB: there were two plots (each 10′ × 15′) for each of two cultivars (`Chandler' and `Selva') for the 3 soil treatments in each of 3 blocks. Mother plants were planted 26 April, and plots were machine-harvested in October, 1993. All plants from each plot were uniformly graded, after which mean stolon yield per mother plant, mean crown diameters, and crown and root dry wts were determined. Cultivar effects and cultivar × treatment interactions were not observed, so data for the two cultivars were pooled. Stolon production per mother plant was greatest for trt 1 (18.56 stolons), intermediate for trt 2 (15.75 stolons), and least form 3 (7.89 stolons). For trt 3, crown dieters. and crown and root dry wts were reduced relative to those of trts 1 or 2. Stolons from all trts were planted in a fruit production field on 13 October, 1993. After two months, canopy diameters were greatest for plants from trt 1 (27.1 cm), intermediate for plants from trt 2 (26.2 cm) and least for plants from trt 3 (24.9 cm). The results indicate that, compared to standard soil fumigation with MeBr/chloropicrin. small, but significant, reductions in runner production and plant vigor can be expected following nursery soil fumigation with intermediate rates of chloropicrin.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Stolon production per mother plant was greatest with MeBr/chloropicrin fumigation.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae0 - Treatment
- MeBr/chloropicrin (67:33)e0
- Outcome
- Stolon production per mother plante3
- Direction
- greateste3
- Value
- 18.56 stolonse3
- Comparator
- nonfumigatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha”
e2“2) chloropicrin, a possible MeBr substitute. at 140 kg/ha: and 3) nonfumigation”
e3“Stolon production per mother plant was greatest for trt 1 (18.56 stolons), intermediate for trt 2 (15.75 stolons), and least form 3 (7.89 stolons)”
Claim · model-written summary
Stolon production per mother plant was intermediate with chloropicrin fumigation.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- chloropicrine2
- Outcome
- Stolon production per mother plante3
- Direction
- intermediatee3
- Value
- 15.75 stolonse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha”
e2“2) chloropicrin, a possible MeBr substitute. at 140 kg/ha: and 3) nonfumigation”
e3“Stolon production per mother plant was greatest for trt 1 (18.56 stolons), intermediate for trt 2 (15.75 stolons), and least form 3 (7.89 stolons)”
Claim · model-written summary
Stolon production per mother plant was least with nonfumigation.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- nonfumigatione2
- Outcome
- Stolon production per mother plante3
- Direction
- leaste3
- Value
- 7.89 stolonse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha”
e2“2) chloropicrin, a possible MeBr substitute. at 140 kg/ha: and 3) nonfumigation”
e3“Stolon production per mother plant was greatest for trt 1 (18.56 stolons), intermediate for trt 2 (15.75 stolons), and least form 3 (7.89 stolons)”
Claim · model-written summary
Canopy diameter after two months was greatest for plants from MeBr/chloropicrin fumigation.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- MeBr/chloropicrin (67:33)e0
- Outcome
- canopy diameterse4
- Direction
- greateste4
- Value
- 27.1 cme4
- Comparator
- nonfumigatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha”
e2“2) chloropicrin, a possible MeBr substitute. at 140 kg/ha: and 3) nonfumigation”
e4“After two months, canopy diameters were greatest for plants from trt 1 (27.1 cm), intermediate for plants from trt 2 (26.2 cm) and least for plants from trt 3 (24.9 cm)”
Claim · model-written summary
Canopy diameter after two months was intermediate for plants from chloropicrin fumigation.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- chloropicrine2
- Outcome
- canopy diameterse4
- Direction
- intermediatee4
- Value
- 26.2 cme4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha”
e2“2) chloropicrin, a possible MeBr substitute. at 140 kg/ha: and 3) nonfumigation”
e4“After two months, canopy diameters were greatest for plants from trt 1 (27.1 cm), intermediate for plants from trt 2 (26.2 cm) and least for plants from trt 3 (24.9 cm)”
Claim · model-written summary
Canopy diameter after two months was least for plants from nonfumigation.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- nonfumigatione2
- Outcome
- canopy diameterse4
- Direction
- leaste4
- Value
- 24.9 cme4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha”
e2“2) chloropicrin, a possible MeBr substitute. at 140 kg/ha: and 3) nonfumigation”
e4“After two months, canopy diameters were greatest for plants from trt 1 (27.1 cm), intermediate for plants from trt 2 (26.2 cm) and least for plants from trt 3 (24.9 cm)”
Claim · model-written summary
Crown and root dry weights were reduced for nonfumigation relative to MeBr/chloropicrin and chloropicrin.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- nonfumigatione2
- Outcome
- crown and root dry wtse5
- Direction
- reducede5
- Comparator
- trts 1 or 2e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha”
e2“2) chloropicrin, a possible MeBr substitute. at 140 kg/ha: and 3) nonfumigation”
e5“For trt 3, crown dieters. and crown and root dry wts were reduced relative to those of trts 1 or 2”
Claim · model-written summary
Cultivar effects and cultivar by treatment interactions were not observed.
- Taxon
- strawberryFragaria ×ananassae0
- Material
- cultivare1
- Outcome
- Cultivar effectse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha”
e1“Cultivar effects and cultivar × treatment interactions were not observed”
Claim · model-written summary
Intermediate rates of chloropicrin may cause small but significant reductions in runner production and plant vigor relative to MeBr/chloropicrin.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- intermediate rates of chloropicrine6
- Outcome
- runner production and plant vigore6
- Direction
- reductionse6
- Qualifier
- smalle6
- Comparator
- MeBr/chloropicrine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new strawberry ground: 1) MeBr/chloropicrin (67:33) at 392 kg/ha”
e6“small, but significant, reductions in runner production and plant vigor can be expected following nursery soil fumigation with intermediate rates of chloropicrin”
The same questions in other papers
chloropicrin · yield · Fragaria x ananassa (strawberry)Results differ
10 papers in the same direction as this paper · 1 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- no effect
- no effect
11 papers more in this group
See all 15 papers →bromomethane · growth · Fragaria x ananassa (strawberry)Results agree
1 paper in the same direction as this paper
- positive
chloropicrin · growth · Fragaria x ananassa (strawberry)Results agree
1 paper in the same direction as this paper
- positive
bromomethane · yield · Fragaria x ananassa (strawberry)Results agree
12 papers in the same direction as this paper
- positive
- positive
- positive
9 papers more in this group
See all 13 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.