Abstract
ABSTRACT There is a need to test the efficacy of weed control technologies on a commercial scale. Therefore, large-plot field studies were conducted on tomato (Lycopersicon esculentum Mill.) farms during 1999 and 2000 to compare the effect of 1,3-dichloropropene + chloropicrin (1,3-D + Pic) application methods on rootknot nematode (Meloidogyne spp.), nutsedge (Cyperus spp.) populations, and tomato growth and fruit yield. Treatments were 1,3-D + Pic (65:35 v/v) applied broadcast at 250 L.ha−1; 1,3-D + Pic (65:35 v/v) applied in-bed at 330 L.ha−1; and methyl bromide (MBr) + Pic (67:33 v/v) applied in-bed at 350 kg.ha−1. Both 1,3-D + Pic treatments received a broadcast application of the herbicide pebulate at a rate of 4 kg.ha−1 before fumigant injection. The results indicated that MBr + Pic and 1,3-D + Pic applied in-bed + pebulate resulted in the lowest rootknot counts, with nearly three times less nematodes than treatment with 1,3-D + Pic applied broadcast + pebulate. However, there were no differences among the treatments for nutsedge density, tomato plant height and vigor, and marketable and non-marketable fruit weight. This finding indicated that by applying 1,3-D + Pic broadcast, it is possible to reduce fumigant rates and personnel poisoning risks and maintain the same tomato yield, and nutsedge and rootknot nematode control as with MBr + Pic.
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Claims 6
Claim · model-written summary
In-bed 1,3-D + Pic with pebulate gave the lowest root-knot nematode counts, nearly three times fewer than broadcast 1,3-D + Pic with pebulate.
- Taxon
- tomato
Solanum lycopersicume2 - Treatment
- 1,3-D + Pic applied in-bed + pebulatee1
- Outcome
- rootknot countse1
- Direction
- loweste1
- Value
- nearly three times lesse1
- Comparator
- 1,3-D + Pic applied broadcast + pebulatee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“MBr + Pic and 1,3-D + Pic applied in-bed + pebulate resulted in the lowest rootknot counts, with nearly three times less nematodes than treatment with 1,3-D + Pic applied broadcast + pebulate”
e2“large-plot field studies were conducted on tomato (Lycopersicon esculentum Mill.) farms”
Claim · model-written summary
MBr + Pic gave the lowest root-knot nematode counts, nearly three times fewer than broadcast 1,3-D + Pic with pebulate.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- MBr + Pice1
- Outcome
- rootknot countse1
- Direction
- loweste1
- Value
- nearly three times lesse1
- Comparator
- 1,3-D + Pic applied broadcast + pebulatee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“MBr + Pic and 1,3-D + Pic applied in-bed + pebulate resulted in the lowest rootknot counts, with nearly three times less nematodes than treatment with 1,3-D + Pic applied broadcast + pebulate”
e2“large-plot field studies were conducted on tomato (Lycopersicon esculentum Mill.) farms”
Claim · model-written summary
The treatments did not differ in nutsedge density.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- the treatmentse3
- Interactor
- nutsedgee3weed
- Outcome
- nutsedge densitye3
- Direction
- no differencese3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“large-plot field studies were conducted on tomato (Lycopersicon esculentum Mill.) farms”
e3“there were no differences among the treatments for nutsedge density”
Claim · model-written summary
The treatments did not differ in tomato plant height and vigor.
- Taxon
- tomatoSolanum lycopersicume4
- Treatment
- the treatmentse4
- Outcome
- plant height and vigore4
- Direction
- no differencese4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“there were no differences among the treatments for nutsedge density, tomato plant height and vigor”
Claim · model-written summary
The treatments did not differ in marketable and non-marketable fruit weight.
- Taxon
- tomatoSolanum lycopersicume5
- Treatment
- the treatmentse5
- Outcome
- marketable and non-marketable fruit weighte5
- Direction
- no differencese5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“there were no differences among the treatments for nutsedge density, tomato plant height and vigor, and marketable and non-marketable fruit weight”
Claim · model-written summary
Broadcast 1,3-D + Pic application could reduce fumigant rates and maintain tomato yield.
- Taxon
- tomatoSolanum lycopersicume6
- Treatment
- 1,3-D + Pic broadcaste6
- Outcome
- reduce fumigant ratese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“by applying 1,3-D + Pic broadcast, it is possible to reduce fumigant rates and personnel poisoning risks and maintain the same tomato yield”
The same questions in other papers
bromomethane · Nematoda · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
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.