Abstract
The effect of two commonly used desiccant tank mixtures on Glycine max seed production and viability when applied at G. max growth stages R5 to R8 (R5 = beginning pod fill, R6 = full green pod, R7 = beginning maturity, R8 = full maturity) was evaluated. Two mid-Group IV G. max cultivars, one conventional (‘Northrup King 4260’) and one glyphosate-tolerant (‘Asgrow 4701RR’), were evaluated. Tank mixtures containing either glyphosate + sodium chlorate or paraquat + sodium chlorate + surfactant reduced yield, seed weight, and subsequent germination, emergence, and seedling growth when applied at R5 or R6 to either G. max cultivar. Glyphosate + sodium chlorate applied at R7 reduced germination of the glyphosate-tolerant cultivar. When applied at R6 or R7, glyphosate + sodium chlorate reduced the next generation's seedling length compared to paraquat + sodium chlorate. Glyphosate + sodium chlorate increased the number of abnormal seedlings produced in the conventional cultivar compared to paraquat + sodium chlorate. These results indicate that preharvest desiccant applications should not be made prior to G. max maturity (R7).
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Claims 6
Claim · model-written summary
Either desiccant mixture at R5 or R6 reduced yield, seed weight, germination, emergence and seedling growth in both cultivars.
- Taxon
- G. max
Glycine maxe0 - Organ / stage
- R5 or R6e0
- Treatment
- glyphosate + sodium chloratee0
- Outcome
- yield, seed weight, and subsequent germinatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tank mixtures containing either glyphosate + sodium chlorate or paraquat + sodium chlorate + surfactant reduced yield, seed weight, and subsequent germination, emergence, and seedling growth when applied at R5 or R6 to either G. max cultivar.”
Claim · model-written summary
Paraquat plus sodium chlorate and surfactant at R5 or R6 reduced yield, seed weight and subsequent viability traits.
- Taxon
- G. maxGlycine maxe0
- Organ / stage
- R5 or R6e0
- Treatment
- paraquat + sodium chlorate + surfactante0
- Outcome
- yield, seed weight, and subsequent germination, emergence, and seedling growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tank mixtures containing either glyphosate + sodium chlorate or paraquat + sodium chlorate + surfactant reduced yield, seed weight, and subsequent germination, emergence, and seedling growth when applied at R5 or R6 to either G. max cultivar.”
Claim · model-written summary
Glyphosate plus sodium chlorate at R7 reduced germination in the glyphosate-tolerant cultivar.
- Taxon
- Glycine maxGlycine maxt0
- Material
- glyphosate-tolerant cultivare0
- Organ / stage
- R7e0
- Treatment
- Glyphosate + sodium chloratee0
- Outcome
- germinatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate + sodium chlorate applied at R7 reduced germination of the glyphosate-tolerant cultivar.”
t0“Glycine max”
Claim · model-written summary
Glyphosate plus sodium chlorate at R6 or R7 reduced next-generation seedling length versus paraquat plus sodium chlorate.
- Taxon
- Glycine maxGlycine maxt0
- Organ / stage
- R6 or R7e0
- Treatment
- glyphosate + sodium chloratee0
- Outcome
- next generation's seedling lengthe0
- Direction
- reducede0
- Comparator
- paraquat + sodium chloratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When applied at R6 or R7, glyphosate + sodium chlorate reduced the next generation's seedling length compared to paraquat + sodium chlorate.”
t0“Glycine max”
Claim · model-written summary
Glyphosate plus sodium chlorate increased abnormal seedlings in the conventional cultivar relative to paraquat plus sodium chlorate.
- Taxon
- Glycine maxGlycine maxt0
- Material
- conventional cultivare0
- Treatment
- Glyphosate + sodium chloratee0
- Outcome
- number of abnormal seedlingse0
- Direction
- increasede0
- Comparator
- paraquat + sodium chloratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate + sodium chlorate increased the number of abnormal seedlings produced in the conventional cultivar compared to paraquat + sodium chlorate.”
t0“Glycine max”
Claim · model-written summary
The authors recommend avoiding desiccants before R7 maturity.
- Taxon
- G. maxGlycine maxe0
- Outcome
- preharvest desiccant applications should not be made prior to G. max maturity (R7)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results indicate that preharvest desiccant applications should not be made prior to G. max maturity (R7).”
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