Abstract
The objective of this study was to establish the impact of glyphosate and cultivation during the fallow period on fumigation requirements for nutsedge control in bell pepper. Studies were conducted at PSREU at Citra, FL, and GCREC at Balm, FL in 2012. Cultivation (C) was applied with a rototiller and glyphosate (G) was applied at 5.51 kg·ha–1 with a backpack sprayer. The timing of treatments were based on an 18-week fallow period: G or C at 9 weeks after initial (WAI) cultivation; GG, CC, GC, or GG at 6 and 12 WAI; GCG at 4, 9, and 14 WAI; and a nontreated control. The three fumigant treatments were 1,3-dichloropropene + chloropicrin (337 kg·ha–1), dimethyl-disulfide (595 kg·ha–1), and a nonfumigated control. Nutsedge plants were counted with a 1-m2 quadrant and bell pepper fruit were harvested at maturity. At 14 days after planting (DAP), the nontreated and C fallow treatments had the greatest nutsedge populations (8 and 6 nutsedge/m2). At 42 DAP, the populations in the nontreated control (16 nutsedge/m2) was greater than in all the treatments that had received glyphosate or cultivation (3 to 8 nutsedge/m2). The lowest nutsedge population resulted from GCG (3 nutsedge/m2) and was similar to the fallow programs that required two inputs during the fallow period. In the nontreated fallow program, applying DMDS or 1,3D+Pic lowered nutsedge population at 42 DAP compared to the nonfumigated control. In the plots treated with CG, GG, or GCG during the fallow period, no differences were observed in among fumigation treatments for nutsedge control. Fallow program did not have an impact on fruit yield. A fallow weed management program that uses more inputs leads to less reliance on fumigation for weed control.
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Claims 7
Claim · model-written summary
Untreated and cultivation fallow plots had the greatest nutsedge populations at 14 days after planting.
- Taxon
- Bell Peppert0
- Treatment
- nontreated and C fallow treatmentse0
- Interactor
- nutsedgee0weed
- Outcome
- nutsedge populationse0
- Direction
- greateste0
- Value
- 8 and 6 nutsedge/m2e0
Not reportedComparator
Verbatim
e0“At 14 days after planting (DAP), the nontreated and C fallow treatments had the greatest nutsedge populations (8 and 6 nutsedge/m2).”
t0“Bell Pepper”
Claim · model-written summary
Untreated control had more nutsedge at 42 DAP than glyphosate or cultivation treatments.
Verbatim
e0“At 42 DAP, the populations in the nontreated control (16 nutsedge/m2) was greater than in all the treatments that had received glyphosate or cultivation (3 to 8 nutsedge/m2).”
t0“Bell Pepper”
Claim · model-written summary
GCG yielded the lowest nutsedge population and was similar to two-input fallow programs.
Verbatim
e0“The lowest nutsedge population resulted from GCG (3 nutsedge/m2) and was similar to the fallow programs that required two inputs during the fallow period.”
t0“Bell Pepper”
Claim · model-written summary
DMDS or 1,3D+Pic reduced nutsedge in untreated fallow plots relative to nonfumigated control.
Verbatim
e0“In the nontreated fallow program, applying DMDS or 1,3D+Pic lowered nutsedge population at 42 DAP compared to the nonfumigated control.”
t0“Bell Pepper”
Claim · model-written summary
Fumigation treatments did not differ for nutsedge control following CG, GG or GCG fallow programs.
Verbatim
e0“In the plots treated with CG, GG, or GCG during the fallow period, no differences were observed in among fumigation treatments for nutsedge control.”
t0“Bell Pepper”
Claim · model-written summary
Fallow program did not affect bell pepper fruit yield.
Not reportedComparator
Verbatim
e0“Fallow program did not have an impact on fruit yield.”
t0“Bell Pepper”
Claim · model-written summary
More intensive fallow weed management reduces reliance on fumigation.
Verbatim
e0“A fallow weed management program that uses more inputs leads to less reliance on fumigation for weed control.”
t0“Bell Pepper”
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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.