Abstract
Field studies were conducted to evaluate weed control, tuber yield, gross return, economic return on investment (EROI), and net return in glyphosate-resistant ‘Ranger Russet’ potato in 2000 and 2001 at the University of Idaho Aberdeen Research and Extension Center near Aberdeen, ID. Three types of weed control programs were evaluated: a total glyphosate program of single or sequential applications (TGLY), tank mixtures of glyphosate and residual herbicides applied early postemergence (GLY RES EPOST), and residual preemergence herbicides followed by (fb) a late postemergence glyphosate application (RES PRE fb LPOST GLY). A standard rimsulfuron metribuzin nonionic surfactant EPOST treatment was included for comparison. The standard EPOST treatment and all glyphosate-containing treatments controlled hairy nightshade 88 to 99%. RES PRE fb LPOST GLY treatments improved hairy nightshade control compared with the RES PRE components applied alone. All herbicide treatments controlled kochia 87 to 99% and green foxtail 87 to 100%. Redroot pigweed and common lambsquarters were controlled ≥85 and ≥89%, respectively, by all herbicide treatments except a single EPOST application of glyphosate at 420 g ae/ha. Depending on the year, sequential applications of glyphosate, GLY RES EPOST, or RES PRE fb GLY LPOST treatments controlled weeds better than single EPOST glyphosate applications. Single LPOST glyphosate applications generally controlled kochia, redroot pigweed, common lambsquarters, and green foxtail better than single EPOST applications. However, single EPOST glyphosate applications controlled hairy nightshade better than a single LPOST application of glyphosate at 420 g/ha. RES PRE fb GLY LPOST treatments improved redroot pigweed, common lambsquarters, and green foxtail control, compared with the RES PRE components applied alone, depending on the RES PRE component and the year. Sequential applications of glyphosate at 840 g ae/ha and the standard nonglyphosate EPOST, GLY RES EPOST, and RES PRE fb GLY LPOST treatments generally provided similar weed control. No crop injury was observed as a result of any herbicide treatment. Sequential applications of glyphosate at 840 g/ha had better tuber yields and economic returns than a single EPOST or LPOST application of glyphosate at 420 g/ha or a single LPOST application of glyphosate at 840 g/ha. A single EPOST application of glyphosate at 420 g/ha had lower tuber yields and economic returns than a single EPOST application of glyphosate at 840 g/ha. The RES PRE alone treatments, except metribuzin pendimethalin, had similar tuber yields, EROI, and net returns as sequential applications of glyphosate at 840 g/ha. Glyphosate rimsulfuron resulted in lower tuber yields than sequential applications of glyphosate at 840 g/ha, whereas EROI and net returns were similar. All other combinations of glyphosate and residual herbicides except glyphosate pendimethalin EPOST, had similar tuber yields, EROI, and net returns as sequential applications of glyphosate at 840 g/ha.Nomenclature: Glyphosate; metribuzin; pendimethalin; rimsulfuron; common lambsquarters, Chenopodium album L. #3 CHEAL; green foxtail, Setaria viridis (L.) Beauv. # SETVI; hairy nightshade, Solanum sarrachoides L. Sendt. # SOLSA; kochia, Kochia scoparia L. Shrad. # KCHSC; redroot pigweed, Amaranthus retroflexus L. # AMARE; potato, Solanum tuberosum L. ‘Ranger Russet’.Additional index words: Economic return on investment, gross return, net return, sequential, tuber yield.Abbreviations: AMS, ammonium sulfate; EPOST, early postemergence; EROI, economic return on investment; fb, followed by; GLY RES EPOST, glyphosate residual herbicide early postemergence; LPOST, late postemergence; MT, metric ton; PNW, Pacific Northwest; POST, postemergence; PRE, preemergence; RES PRE fb GLY LPOST, residual preemergence herbicide followed by glyphosate late postemergence; TGLY, total glyphosate program; WAT, weeks after treatment.
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 19
Claim · model-written summary
Standard and glyphosate treatments controlled hairy nightshade 88 to 99%.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- glyphosate-containing treatmentse0
- Interactor
- hairy nightshadee0weed
- Outcome
- hairy nightshadee0
- Direction
- controllede0
- Value
- 88 to 99%e0
- Comparator
- standard EPOST treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The standard EPOST treatment and all glyphosate-containing treatments controlled hairy nightshade 88 to 99%”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Residual preemergence plus late glyphosate improved hairy nightshade control over residual preemergence alone.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- RES PRE fb LPOST GLY treatmentse0
- Interactor
- hairy nightshadee0weed
- Outcome
- hairy nightshade controle0
- Direction
- improvede0
- Comparator
- RES PRE components applied alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RES PRE fb LPOST GLY treatments improved hairy nightshade control compared with the RES PRE components applied alone”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
All herbicide treatments controlled kochia 87 to 99%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- All herbicide treatmentse0
- Outcome
- kochiae0
- Direction
- controllede0
- Value
- 87 to 99%e0
BassiaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All herbicide treatments controlled kochia 87 to 99%”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
All herbicide treatments controlled green foxtail 87 to 100%.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- green foxtaile0weed
- Outcome
- green foxtaile0
- Value
- 87 to 100%e0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green foxtail 87 to 100%”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Most herbicide treatments controlled redroot pigweed at least 85%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- all herbicide treatments except a single EPOST application of glyphosate at 420 g ae/hae0
- Interactor
- Redroot pigweede0weed
- Outcome
- Redroot pigweede0
- Direction
- controllede0
- Value
- ≥85e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Redroot pigweed and common lambsquarters were controlled ≥85 and ≥89%, respectively, by all herbicide treatments except a single EPOST application of glyphosate at 420 g ae/ha”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Most herbicide treatments controlled common lambsquarters at least 89%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- all herbicide treatments except a single EPOST application of glyphosate at 420 g ae/hae0
- Interactor
- common lambsquarters
Chenopodium albume0weed - Outcome
- common lambsquarterse0
- Direction
- controllede0
- Value
- ≥89%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Redroot pigweed and common lambsquarters were controlled ≥85 and ≥89%, respectively, by all herbicide treatments except a single EPOST application of glyphosate at 420 g ae/ha”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Multiple or mixture glyphosate programs sometimes controlled weeds better than single early applications.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- sequential applications of glyphosate, GLY RES EPOST, or RES PRE fb GLY LPOST treatmentse0
- Interactor
- weedse0weed
- Outcome
- weedse0
- Direction
- bettere0
- Comparator
- single EPOST glyphosate applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Depending on the year, sequential applications of glyphosate, GLY RES EPOST, or RES PRE fb GLY LPOST treatments controlled weeds better than single EPOST glyphosate applications”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Late glyphosate generally controlled kochia, redroot pigweed and common lambsquarters better than early glyphosate.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Single LPOST glyphosate applicationse0
- Outcome
- kochia, redroot pigweed, common lambsquarterse0
- Direction
- bettere0
- Comparator
- single EPOST applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single LPOST glyphosate applications generally controlled kochia, redroot pigweed, common lambsquarters, and green foxtail better than single EPOST applications”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Late glyphosate generally controlled green foxtail better than early glyphosate.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Single LPOST glyphosate applicationse0
- Interactor
- green foxtaile0weed
- Outcome
- green foxtaile0
- Direction
- bettere0
- Comparator
- single EPOST applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single LPOST glyphosate applications generally controlled kochia, redroot pigweed, common lambsquarters, and green foxtail better than single EPOST applications”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Early glyphosate better controlled hairy nightshade than late glyphosate at 420 g/ha.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- single EPOST glyphosate applicationse0
- Interactor
- hairy nightshadee0weed
- Outcome
- hairy nightshadee0
- Direction
- bettere0
- Comparator
- a single LPOST application of glyphosate at 420 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“single EPOST glyphosate applications controlled hairy nightshade better than a single LPOST application of glyphosate at 420 g/ha”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Residual preemergence followed by glyphosate improved redroot pigweed, lambsquarters and foxtail control over residual preemergence alone.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- RES PRE fb GLY LPOST treatmentse0
- Interactor
- redroot pigweede0weed
- Outcome
- redroot pigweed, common lambsquarters, and green foxtail controle0
- Direction
- improvede0
- Comparator
- RES PRE components applied alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RES PRE fb GLY LPOST treatments improved redroot pigweed, common lambsquarters, and green foxtail control, compared with the RES PRE components applied alone”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Several programs generally provided similar weed control to sequential glyphosate.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- standard nonglyphosate EPOST, GLY RES EPOST, and RES PRE fb GLY LPOST treatmentse0
- Interactor
- weede0weed
- Outcome
- weed controle0
- Direction
- similare0
- Comparator
- Sequential applications of glyphosate at 840 g ae/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sequential applications of glyphosate at 840 g ae/ha and the standard nonglyphosate EPOST, GLY RES EPOST, and RES PRE fb GLY LPOST treatments generally provided similar weed control”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
No potato crop injury was observed after herbicide treatment.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- any herbicide treatmente0
- Outcome
- No crop injurye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No crop injury was observed as a result of any herbicide treatment”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Sequential 840 g/ha glyphosate produced better potato tuber yields and economic returns than specified single applications.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Sequential applications of glyphosate at 840 g/hae0
- Outcome
- tuber yields and economic returnse0
- Direction
- bettere0
- Comparator
- a single EPOST or LPOST application of glyphosate at 420 g/ha or a single LPOST application of glyphosate at 840 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sequential applications of glyphosate at 840 g/ha had better tuber yields and economic returns than a single EPOST or LPOST application of glyphosate at 420 g/ha or a single LPOST application of glyphosate at 840 g/ha”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Single early 420 g/ha glyphosate gave lower tuber yields and returns than 840 g/ha.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- A single EPOST application of glyphosate at 420 g/hae0
- Outcome
- tuber yields and economic returnse0
- Direction
- lowere0
- Comparator
- a single EPOST application of glyphosate at 840 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A single EPOST application of glyphosate at 420 g/ha had lower tuber yields and economic returns than a single EPOST application of glyphosate at 840 g/ha”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Most residual preemergence treatments had similar yields, EROI and net returns to sequential glyphosate.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- RES PRE alone treatments, except metribuzin pendimethaline0
- Outcome
- tuber yields, EROI, and net returnse0
- Direction
- similare0
- Comparator
- sequential applications of glyphosate at 840 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RES PRE alone treatments, except metribuzin pendimethalin, had similar tuber yields, EROI, and net returns as sequential applications of glyphosate at 840 g/ha”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Glyphosate plus rimsulfuron yielded less than sequential glyphosate.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Glyphosate rimsulfurone0
- Outcome
- tuber yieldse0
- Direction
- lowere0
- Comparator
- sequential applications of glyphosate at 840 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate rimsulfuron resulted in lower tuber yields than sequential applications of glyphosate at 840 g/ha”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Glyphosate plus rimsulfuron had similar EROI and net returns to sequential glyphosate.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- EROI and net returnse0
- Direction
- similare0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas EROI and net returns were similar”
t0“Potato (Solanum tuberosum)”
Claim · model-written summary
Other glyphosate and residual combinations generally had similar yields and economic returns to sequential glyphosate.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- All other combinations of glyphosate and residual herbicides except glyphosate pendimethalin EPOSTe0
- Outcome
- tuber yields, EROI, and net returnse0
- Direction
- similare0
- Comparator
- sequential applications of glyphosate at 840 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All other combinations of glyphosate and residual herbicides except glyphosate pendimethalin EPOST, had similar tuber yields, EROI, and net returns as sequential applications of glyphosate at 840 g/ha”
t0“Potato (Solanum tuberosum)”
The same questions in other papers
glyphosate · yield · Solanum tuberosum (potato)Results differ
3 papers in the same direction as this paper · 8 in the opposite direction
- negative
- negative
- no effect
8 papers more in this group
See all 12 papers →metribuzin · yield · Solanum tuberosum (potato)Results differ
7 papers in the same direction as this paper · 13 reporting no difference from an alternative
- positive
- positive
- positive
17 papers more in this group
See all 21 papers →glyphosate · weed · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
pendimethalin · yield · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 2 reporting no difference from an alternative
- positive
- positive
- negative
1 paper more in this group
See all 5 papers →rimsulfuron · yield · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 5 in the opposite direction
- positive
- no effect
- positive
4 papers more in this group
See all 8 papers →glyphosate · Chenopodium album · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
glyphosate · organism · Solanum tuberosum (potato)Results agree
2 papers in the same direction as this paper
- positive
- positive
herbicide · yield · Solanum tuberosum (potato)Results differ
20 papers in the same direction as this paper · 40 reporting no difference from an alternative
- no effect
- positive
- positive
57 papers more in this group
See all 61 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.