Abstract
Five field studies on sandy soils with ≤ 1% organic matter in south Texas showed that halosulfuron at 0.066 kg/ha preemergence (PRE) controlled ≥ 92% purple nutsedge and at 0.066 kg/ha postemergence (POST) controlled purple nutsedge 77 to 95%. Sulfentrazone at 0.11 to 0.28 kg/ha PRE or POST controlled purple nutsedge < 65% at one location but > 75% at two other locations. Poor control at the one location may have been due to a lack of early-season rainfall or irrigation. Potatoes were stunted 5 to 26% with halosulfuron PRE, whereas POST treatments caused 7 to 40% stunting. Sulfentrazone at 0.11 to 0.28 kg/ha applied PRE or POST caused 2 to 38% stunting. ‘Atlantic’ potato stunting with sulfentrazone POST at 0.14 to 0.28 kg/ha was ≥ 20%, whereas ‘Snowden’ and ‘1625’ potatoes were stunted ≤ 20%. Potato yields were reduced 65 and 39% with sulfentrazone and halosulfuron POST, respectively, at the high rates, but yield reductions occurred with all POST treatments on Atlantic potatoes 10- to 20-cm tall. Halosulfuron PRE at 0.033 kg/ha and sulfentrazone PRE at 0.14 kg/ha did not reduce yields; however, all other treatments of halosulfuron and sulfentrazone reduced potato yields.Nomenclature: Halosulfuron; sulfentrazone; purple nutsedge, Cyperus rotundus L. #3 CYPRO; potato, Solanum tubersum L., ‘Atlantic’, ‘Snowden’, ‘1625’.Additional index words: Preemergence, postemergence.Abbreviations: OM, organic matter; POST, postemergence; PPI, preplant incorporated; PRE, preemergence; WAP, weeks after planting.
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Claims 15
Claim · model-written summary
Halosulfuron at 0.066 kg/ha preemergence controlled 92% or more of purple nutsedge in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- halosulfuron at 0.066 kg/ha preemergence (PRE)e0
- Interactor
- purple nutsedgee0weed
- Outcome
- purple nutsedgee0
- Direction
- controllede0
- Value
- ≥ 92%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e0“halosulfuron at 0.066 kg/ha preemergence (PRE) controlled ≥ 92% purple nutsedge”
Claim · model-written summary
Postemergence treatment at 0.066 kg/ha controlled 77 to 95% of purple nutsedge in potato.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- at 0.066 kg/ha postemergence (POST)e1
- Interactor
- purple nutsedgee1weed
- Outcome
- purple nutsedgee1
- Direction
- controllede1
- Value
- 77 to 95%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e1“at 0.066 kg/ha postemergence (POST) controlled purple nutsedge 77 to 95%”
Claim · model-written summary
Sulfentrazone at 0.11 to 0.28 kg/ha controlled purple nutsedge below 65% at one location, a poor control possibly due to lack of early rainfall or irrigation.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Sulfentrazone at 0.11 to 0.28 kg/ha PRE or POSTe2
- Interactor
- purple nutsedgee2weed
- Outcome
- purple nutsedgee2
- Direction
- controllede2
- Value
- < 65%e2
- Qualifier
- at one locatione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e2“Sulfentrazone at 0.11 to 0.28 kg/ha PRE or POST controlled purple nutsedge < 65% at one location”
Claim · model-written summary
Sulfentrazone at 0.11 to 0.28 kg/ha controlled purple nutsedge above 75% at two other locations.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Sulfentrazone at 0.11 to 0.28 kg/ha PRE or POSTe2
- Interactor
- purple nutsedgee2weed
- Outcome
- purple nutsedgee2
- Direction
- controllede2
- Value
- > 75%e3
- Qualifier
- at two other locationse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e2“Sulfentrazone at 0.11 to 0.28 kg/ha PRE or POST controlled purple nutsedge < 65% at one location”
e3“but > 75% at two other locations”
Claim · model-written summary
Halosulfuron preemergence stunted potato by 5 to 26%.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- halosulfuron PREe4
- Outcome
- stuntede4
- Value
- 5 to 26%e4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e4“Potatoes were stunted 5 to 26% with halosulfuron PRE”
Claim · model-written summary
Postemergence treatments of halosulfuron caused 7 to 40% potato stunting.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- POST treatmentse5
- Outcome
- stuntinge5
- Direction
- causede5
- Value
- 7 to 40%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e5“whereas POST treatments caused 7 to 40% stunting”
Claim · model-written summary
Sulfentrazone preemergence or postemergence caused 2 to 38% potato stunting.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Sulfentrazone at 0.11 to 0.28 kg/ha applied PRE or POSTe6
- Outcome
- stuntinge6
- Direction
- causede6
- Value
- 2 to 38%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e6“Sulfentrazone at 0.11 to 0.28 kg/ha applied PRE or POST caused 2 to 38% stunting”
Claim · model-written summary
Atlantic potato was stunted 20% or more by postemergence sulfentrazone at 0.14 to 0.28 kg/ha.
- Taxon
- PotatoSolanum tuberosumt0
- Material
- Atlantice7
- Treatment
- sulfentrazone POST at 0.14 to 0.28 kg/hae7
- Outcome
- stuntinge7
- Value
- ≥ 20%e7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e7“‘Atlantic’ potato stunting with sulfentrazone POST at 0.14 to 0.28 kg/ha was ≥ 20%”
Claim · model-written summary
Snowden and 1625 potatoes were stunted 20% or less by postemergence sulfentrazone at 0.14 to 0.28 kg/ha.
- Taxon
- PotatoSolanum tuberosumt0
- Material
- Snowden’ and ‘1625e1
- Treatment
- sulfentrazone POST at 0.14 to 0.28 kg/hae7
- Outcome
- stuntede1
- Direction
- stuntede1
- Value
- ≤ 20%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e7“‘Atlantic’ potato stunting with sulfentrazone POST at 0.14 to 0.28 kg/ha was ≥ 20%”
e1“‘Snowden’ and ‘1625’ potatoes were stunted ≤ 20%”
Claim · model-written summary
Sulfentrazone at the high rates reduced potato yield by 65%.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- sulfentrazonee0
- Outcome
- Potato yieldse0
- Direction
- reducede0
- Value
- 65e0
- Qualifier
- at the high ratese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e0“Potato yields were reduced 65 and 39% with sulfentrazone and halosulfuron POST, respectively, at the high rates”
Claim · model-written summary
Halosulfuron postemergence at the high rates reduced potato yield by 39%.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- halosulfuron POSTe0
- Outcome
- Potato yieldse0
- Direction
- reducede0
- Value
- 39e0
- Qualifier
- at the high ratese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e0“Potato yields were reduced 65 and 39% with sulfentrazone and halosulfuron POST, respectively, at the high rates”
Claim · model-written summary
Halosulfuron preemergence at 0.033 kg/ha did not reduce potato yield.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Halosulfuron PRE at 0.033 kg/hae0
- Outcome
- yieldse0
- Direction
- did not reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e0“Halosulfuron PRE at 0.033 kg/ha and sulfentrazone PRE at 0.14 kg/ha did not reduce yields”
Claim · model-written summary
Sulfentrazone preemergence at 0.14 kg/ha did not reduce potato yield.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- sulfentrazone PRE at 0.14 kg/hae0
- Outcome
- yieldse0
- Direction
- did not reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e0“Halosulfuron PRE at 0.033 kg/ha and sulfentrazone PRE at 0.14 kg/ha did not reduce yields”
Claim · model-written summary
All other halosulfuron and sulfentrazone treatments reduced potato yield.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- all other treatments of halosulfuron and sulfentrazonee0
- Outcome
- potato yieldse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e0“all other treatments of halosulfuron and sulfentrazone reduced potato yields”
Claim · model-written summary
Postemergence treatments reduced yield of Atlantic potatoes 10 to 20 cm tall.
- Taxon
- PotatoSolanum tuberosumt0
- Material
- Atlantice0
- Treatment
- all POST treatmentse0
- Outcome
- yielde0
- Direction
- yield reductions occurrede0
- Qualifier
- 10- to 20-cm talle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato (Solanum tuberosum)”
e0“yield reductions occurred with all POST treatments on Atlantic potatoes 10- to 20-cm tall”
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