Abstract
Studies were conducted in 2006 at Clinton and Kinston, NC, to determine the influence of halosulfuron POST (over the crop plant) or POST-directed (to the crop) on growth and yield of transplanted ‘Precious Petite’ and ‘Tri-X-313’ triploid watermelon. Treatments included a nontreated control, 39 g/ha halosulfuron applied POST-directed to 25% of the plant (distal or proximal region), POST-directed to 50% of the plant (distal or proximal; Precious Petite only), and POST. Watermelon treated with halosulfuron displayed chlorotic leaves, shortened internodes, and increased stem splitting. Vines were longest in the nontreated control (Tri-X-313 = 146 cm, Precious Petite = 206 cm) but were shortest in the POST treatment (Tri-X-313 = 88 cm, Precious Petite = 77 cm). Halosulfuron POST to watermelon caused the greatest injury (Tri-X-313 = 64%, Precious Petite = 67%). Halosulfuron directed to 25 or 50% (distal or proximal) of the plant caused less injury than halosulfuron applied POST. Stem splitting was greatest when halosulfuron was applied to the proximal area of the stem compared with POST-directed distal or POST. Internode shortening was greatest in treatments where halosulfuron was applied to the distal region of the stem. However, Tri-X-313 in the POST-directed 25% distal treatment produced similar total and marketable fruit weight as the nontreated control at Clinton. Fruit number did not differ among treatments for either cultivar. At Kinston, Precious Petite nontreated control and POST-directed 25% distal end treatment had greater marketable fruit weight than the POST-directed 50% proximal and POST treatments. The current halosulfuron registration allows POST application between rows or PRE. Limiting halosulfuron contact to no more than 25% of the watermelon plant will likely improve crop tolerance.
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Claims 13
Claim · model-written summary
Halosulfuron caused chlorotic leaves, shortened internodes and increased stem splitting in watermelon.
- Taxon
- Watermelon
Citrullus lanatuse0 - Treatment
- halosulfurone0
- Outcome
- chlorotic leaves, shortened internodes, and increased stem splittinge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Watermelon treated with halosulfuron displayed chlorotic leaves, shortened internodes, and increased stem splitting.”
Claim · model-written summary
Tri-X-313 vines were longest in untreated controls at 146 cm and shortest with POST halosulfuron at 88 cm.
- Material
- Tri-X-313e0
- Treatment
- POST treatmente0
- Outcome
- Vinese0
- Direction
- shorteste0
- Value
- 88 cme0
- Qualifier
- 146 cme0
- Comparator
- nontreated controle0
Not reportedTaxon
Verbatim
e0“Vines were longest in the nontreated control (Tri-X-313 = 146 cm, Precious Petite = 206 cm) but were shortest in the POST treatment (Tri-X-313 = 88 cm, Precious Petite = 77 cm).”
Claim · model-written summary
Precious Petite vines were longest in untreated controls at 206 cm and shortest with POST halosulfuron at 77 cm.
- Material
- Precious Petitee0
- Treatment
- POST treatmente0
- Outcome
- Vinese0
- Direction
- shorteste0
- Value
- 77 cme0
- Qualifier
- 206 cme0
- Comparator
- nontreated controle0
Not reportedTaxon
Verbatim
e0“Vines were longest in the nontreated control (Tri-X-313 = 146 cm, Precious Petite = 206 cm) but were shortest in the POST treatment (Tri-X-313 = 88 cm, Precious Petite = 77 cm).”
Claim · model-written summary
POST halosulfuron caused the greatest Tri-X-313 injury, 64%.
- Taxon
- watermelonCitrullus lanatuse0
- Material
- Tri-X-313e0
- Treatment
- Halosulfuron POSTe0
- Outcome
- injurye0
- Direction
- greateste0
- Value
- 64%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Halosulfuron POST to watermelon caused the greatest injury (Tri-X-313 = 64%, Precious Petite = 67%).”
Claim · model-written summary
POST halosulfuron caused the greatest Precious Petite injury, 67%.
- Taxon
- watermelonCitrullus lanatuse0
- Material
- Precious Petitee0
- Treatment
- Halosulfuron POSTe0
- Outcome
- injurye0
- Direction
- greateste0
- Value
- 67%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Halosulfuron POST to watermelon caused the greatest injury (Tri-X-313 = 64%, Precious Petite = 67%).”
Claim · model-written summary
Directing halosulfuron to 25 or 50% of watermelon plants caused less injury than POST application.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- Halosulfuron directed to 25 or 50% (distal or proximal) of the plante0
- Outcome
- injurye0
- Direction
- lesse0
- Comparator
- halosulfuron applied POSTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Halosulfuron directed to 25 or 50% (distal or proximal) of the plant caused less injury than halosulfuron applied POST.”
t0“watermelon”
Claim · model-written summary
Proximal stem application caused the greatest stem splitting.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- halosulfuron was applied to the proximal area of the steme0
- Outcome
- Stem splittinge0
- Direction
- greateste0
- Comparator
- POST-directed distal or POSTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem splitting was greatest when halosulfuron was applied to the proximal area of the stem compared with POST-directed distal or POST.”
t0“watermelon”
Claim · model-written summary
Distal stem application caused the greatest internode shortening.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- halosulfuron was applied to the distal region of the steme0
- Outcome
- Internode shorteninge0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Internode shortening was greatest in treatments where halosulfuron was applied to the distal region of the stem.”
t0“watermelon”
Claim · model-written summary
At Clinton, Tri-X-313 given POST-directed 25% distal treatment had total and marketable fruit weight similar to untreated controls.
- Material
- Tri-X-313e0
- Treatment
- POST-directed 25% distal treatmente0
- Outcome
- total and marketable fruit weighte0
- Direction
- similare0
- Comparator
- nontreated controle0
- Setting
- Clintone0
Not reportedTaxon
Verbatim
e0“Tri-X-313 in the POST-directed 25% distal treatment produced similar total and marketable fruit weight as the nontreated control at Clinton.”
Claim · model-written summary
Fruit number did not differ among treatments for either watermelon cultivar.
- Taxon
- watermelonCitrullus lanatust0
- Outcome
- Fruit numbere0
- Direction
- did not differe0
- Comparator
- among treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit number did not differ among treatments for either cultivar.”
t0“watermelon”
Claim · model-written summary
At Kinston, untreated Precious Petite had greater marketable fruit weight than 50% proximal and POST treatments.
- Material
- Precious Petitee0
- Treatment
- POST-directed 50% proximal and POST treatmentse0
- Outcome
- marketable fruit weighte0
- Direction
- greatere0
- Comparator
- nontreated controle0
- Setting
- Kinstone0
Not reportedTaxon
Verbatim
e0“At Kinston, Precious Petite nontreated control and POST-directed 25% distal end treatment had greater marketable fruit weight than the POST-directed 50% proximal and POST treatments.”
Claim · model-written summary
At Kinston, Precious Petite given 25% distal treatment had greater marketable fruit weight than 50% proximal and POST treatments.
- Material
- Precious Petitee0
- Treatment
- POST-directed 25% distal end treatmente0
- Outcome
- marketable fruit weighte0
- Direction
- greatere0
- Comparator
- POST-directed 50% proximal and POST treatmentse0
- Setting
- Kinstone0
Not reportedTaxon
Verbatim
e0“At Kinston, Precious Petite nontreated control and POST-directed 25% distal end treatment had greater marketable fruit weight than the POST-directed 50% proximal and POST treatments.”
Claim · model-written summary
The authors recommend limiting halosulfuron contact to no more than 25% of watermelon plants to improve tolerance.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- halosulfurone0
- Outcome
- crop tolerancee0
- Direction
- improvee0
- Qualifier
- no more than 25%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Limiting halosulfuron contact to no more than 25% of the watermelon plant will likely improve crop tolerance.”
The same questions in other papers
Halosulfuron-methyl · crop injury · Citrullus lanatus (watermelon)Positive and negative results
3 papers in the same direction as this paper · 4 in the opposite direction
- positive
- negative
- negative
4 papers more in this group
See all 8 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.