Abstract
Metribuzin has a 60-d preharvest interval (PHI) in potato, which limits utility of metribuzin POST in potato. In certain years, the potato may not fully cover the area between the potato rows. This allows for late-season weed emergence and subsequent yield reduction through direct competition or harvest interference. Field experiments were conducted in 2011 at Castle Hayne, NC; Freeville, NY; Hasting, FL; and Plymouth, NC to determine the effect of a 30-d PHI on potato crop tolerance. The cultivars planted were ‘Superior' and ‘Yukon Gold' in Castle Hayne and Plymouth, ‘Castille' and Yukon Gold in Freeville, and ‘Atlantic' in Hastings. Treatments included metribuzin at 278 g ai ha −1 PRE, 30, and 60 d before harvest (DBH), and metribuzin at 556 g ha −1 at 30 and 60 DBH. Split application treatments included metribuzin at 556 g ha −1 at PRE followed by metribuzin at 556 g ha −1 30 or 60 DBH and metribuzin at 842 g ha −1 PRE followed by metribuzin at 278 g ha −1 at 30 or 60 DBH. Potato injury was ≤ 8% at all locations, and injury was transient. There were no differences observed between metribuzin rate or application date for individual potato grades or total yield. Reducing the PHI in potato to 30 d would have no effect on yield and would provide a longer period for controlling broadleaf weeds.
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Claims 4
Claim · model-written summary
Potato injury was at most 8% and transient across all locations.
- Taxon
- Potato
Solanum tuberosume0 - Outcome
- injurye0
- Value
- ≤ 8%e0
- Qualifier
- transiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potato injury was ≤ 8% at all locations, and injury was transient.”
Claim · model-written summary
Potato grades did not differ by metribuzin rate or application date.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- metribuzin rate or application datee0
- Outcome
- individual potato gradese0
- Direction
- no differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no differences observed between metribuzin rate or application date for individual potato grades or total yield.”
t0“Potato”
Claim · model-written summary
Total potato yield did not differ by metribuzin rate or application date.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- metribuzin rate or application datee0
- Outcome
- total yielde0
- Direction
- no differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no differences observed between metribuzin rate or application date for individual potato grades or total yield.”
t0“Potato”
Claim · model-written summary
The authors conclude that reducing potato metribuzin PHI to 30 days would retain yield while extending broadleaf weed control.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- 30 de0
- Outcome
- Reducing the PHI in potato to 30 de0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reducing the PHI in potato to 30 d would have no effect on yield and would provide a longer period for controlling broadleaf weeds.”
The same questions in other papers
metribuzin · yield · Solanum tuberosum (potato)Results differ
7 papers in the same direction as this paper · 13 in the opposite direction
- no effect
- negative
- positive
17 papers more in this group
See all 21 papers →metribuzin · organism · Solanum tuberosum (potato)Positive and negative results
1 in the opposite direction
- 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.