Abstract
ABSTRACT: Pre-harvest desiccation is an important strategy to anticipate harvesting, preventing the seed from being left in the field in unfavorable climatic conditions. However, little is known about the use of desiccants and their application times on cowpea (Vigna unguiculata). The objective of this study was to evaluate the effect of desiccant application at different seasons and of desiccant herbicides on productivity and physiological quality of cowpea seeds. Five dessicants were evaluated: paraquat, paraquat sequential application, glufosinate- ammonium, glyphosate with sequential application of paraquat and paraquat + diuron mixture applied in four seasons: 50% of the pods with green coloration and with seeds formed (season I); 70% of the pods in the purple coloration (season II), 90% of the pods in the coloration brown (season III) and 100% of the pods in the coloration brown (season IV), plus a control without the application of desiccants, in which harvesting was performed when 100% of the pods were brown. The number of days of anticipation of harvest, productivity, uniformity test, mass of one hundred seeds, germination and vigor of the seeds were evaluated. None of desiccation strategies affect the physiological seed quality, independent of the application season. The desquaments paraquat, glufosinate-ammonium and the paraquat+diuron mixture, when applied in seasons I and II, provided anticipation of the harvest in up to 13 days and 9 days, respectively, however, the size of the seeds and consequently the productivity were affected.
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Claims 6
Claim · model-written summary
Desiccation strategies did not affect physiological seed quality across application seasons.
- Taxon
- Cowpea
Vigna unguiculatat0 - Treatment
- desiccation strategiese0
- Outcome
- physiological seed qualitye0
- Direction
- Nonee0
- Qualifier
- independent of the application seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“None of desiccation strategies affect the physiological seed quality, independent of the application season”
Claim · model-written summary
Paraquat applied in seasons I and II advanced harvest by up to 13 and 9 days, respectively.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- paraquate0
- Outcome
- anticipation of the harveste0
- Direction
- anticipatione0
- Value
- 13 days and 9 dayse0
- Qualifier
- seasons I and IIe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“paraquat, glufosinate-ammonium and the paraquat+diuron mixture, when applied in seasons I and II, provided anticipation of the harvest in up to 13 days and 9 days, respectively”
Claim · model-written summary
Glufosinate-ammonium applied in seasons I and II advanced harvest by up to 13 and 9 days, respectively.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- glufosinate-ammoniume0
- Outcome
- anticipation of the harveste0
- Direction
- anticipatione0
- Value
- 13 days and 9 dayse0
- Qualifier
- seasons I and IIe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“paraquat, glufosinate-ammonium and the paraquat+diuron mixture, when applied in seasons I and II, provided anticipation of the harvest in up to 13 days and 9 days, respectively”
Claim · model-written summary
Paraquat plus diuron applied in seasons I and II advanced harvest by up to 13 and 9 days, respectively.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- paraquat+diuron mixturee0
- Outcome
- anticipation of the harveste0
- Direction
- anticipatione0
- Value
- 13 days and 9 dayse0
- Qualifier
- seasons I and IIe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“paraquat, glufosinate-ammonium and the paraquat+diuron mixture, when applied in seasons I and II, provided anticipation of the harvest in up to 13 days and 9 days, respectively”
Claim · model-written summary
Early desiccation affected seed size.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- seasons I and IIe0
- Outcome
- size of the seedse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“when applied in seasons I and II, provided anticipation of the harvest in up to 13 days and 9 days, respectively, however, the size of the seeds and consequently the productivity were affected”
Claim · model-written summary
Early desiccation affected productivity.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- seasons I and IIe0
- Outcome
- productivitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cowpea”
e0“when applied in seasons I and II, provided anticipation of the harvest in up to 13 days and 9 days, respectively, however, the size of the seeds and consequently the productivity were affected”
The same questions in other papers
paraquat · yield · Vigna unguiculata (cowpea)Results differ
2 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- no effect
2 papers more in this group
See all 6 papers →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.