Abstract
Abstract Crop loss assessment charts and loss adjustments related to hail damage are based on studies that determine the degree of plant recovery from defoliation. Such information is lacking in sesame ( Sesamum indicum L.). An irrigated study was conducted in 1989 and 1990 to determine the ability of a nonbranching sesame cultivar to recover from defoliation and growth terminal clipping applied to plants at different growth stages. The treatments included 0, 33, 66, and 100% defoliation levels and clipped vs. nonclipped growth terminals applied at vegetative (37 days after planting, DAP), flowering (48 DAP), and capsule filling (71 DAP in 1989 and 65 DAP in 1990) stages. Average seed yield of the nondefoliated nonclipped (control) treatment was 1523 kg ha −1 in 1989 and 1832 kg ha −1 in 1990. The magnitude of recovery from defoliation and growth terminal clipping was highly dependent on when the treatments were imposed. In the nonclipped treatment, the 33% defoliation treatment produced 90 to 102% as much seed as the control regardless of the growth stage. Seed yield of the 66% defoliation in the nonclipped treatment varied from 85 to 103% of the control when defoliation was imposed before heavy fruiting (54 DAP or earlier). When imposed after heavy fruiting, the 66% defoliation reduced yield by 20% in 1989 and 30% in 1990. The most severe defoliation (100%) in the nonclipped treatment yielded 93, 89, and 34% of the control in 1989 and 77, 72, and 16% of the control in 1990 when applied at the vegetative, flowering, and capsule filling stages, respectively. The magnitude of recovery from defoliation in the clipped treatments also decreased with more advanced growth stage; however, this response was more pronounced in the clipped than the nonclipped treatments. The greatest reduction in seed yield occurred when all leaves were defoliated and the growth terminal removed after heavy fruiting.
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 14
Claim · model-written summary
Control seed yield was 1523 kg ha −1 in 1989.
- Taxon
- sesame ( Sesamum indicum L.)
Sesamum indicumt0 - Treatment
- nondefoliated nonclipped (control) treatmente0
- Outcome
- seed yielde0
- Value
- 1523 kg ha −1e0
- Qualifier
- 1989e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average seed yield of the nondefoliated nonclipped (control) treatment was 1523 kg ha −1 in 1989 and 1832 kg ha −1 in 1990.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Control seed yield was 1832 kg ha −1 in 1990.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- nondefoliated nonclipped (control) treatmente0
- Outcome
- seed yielde0
- Value
- 1832 kg ha −1e0
- Qualifier
- 1990e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average seed yield of the nondefoliated nonclipped (control) treatment was 1523 kg ha −1 in 1989 and 1832 kg ha −1 in 1990.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Nonclipped 33% defoliation yielded 90 to 102% of control regardless of stage.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 33% defoliation treatmente0
- Outcome
- seede0
- Value
- 90 to 102%e0
- Qualifier
- regardless of the growth stagee0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the nonclipped treatment, the 33% defoliation treatment produced 90 to 102% as much seed as the control regardless of the growth stage.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Before heavy fruiting, 66% defoliation yielded 85 to 103% of control.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 66% defoliatione0
- Outcome
- Seed yielde0
- Value
- 85 to 103%e0
- Qualifier
- before heavy fruiting (54 DAP or earlier)e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yield of the 66% defoliation in the nonclipped treatment varied from 85 to 103% of the control when defoliation was imposed before heavy fruiting (54 DAP or earlier).”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
After heavy fruiting, 66% defoliation reduced yield 20% in 1989.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 66% defoliatione0
- Outcome
- yielde0
- Direction
- reducede0
- Value
- 20%e0
- Qualifier
- 1989e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When imposed after heavy fruiting, the 66% defoliation reduced yield by 20% in 1989 and 30% in 1990.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
After heavy fruiting, 66% defoliation reduced yield 30% in 1990.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 66% defoliatione0
- Outcome
- yielde0
- Direction
- reducede0
- Value
- 30%e0
- Qualifier
- 1990e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When imposed after heavy fruiting, the 66% defoliation reduced yield by 20% in 1989 and 30% in 1990.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Full defoliation in 1989 at vegetative yielded 93% of control.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 100%e0
- Outcome
- yieldede0
- Value
- 93e0
- Qualifier
- vegetativee0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most severe defoliation (100%) in the nonclipped treatment yielded 93, 89, and 34% of the control in 1989 and 77, 72, and 16% of the control in 1990 when applied at the vegetative, flowering, and capsule filling stages, respectively.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Full defoliation in 1989 at flowering yielded 89% of control.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 100%e0
- Outcome
- yieldede0
- Value
- 89e0
- Qualifier
- floweringe0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most severe defoliation (100%) in the nonclipped treatment yielded 93, 89, and 34% of the control in 1989 and 77, 72, and 16% of the control in 1990 when applied at the vegetative, flowering, and capsule filling stages, respectively.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Full defoliation in 1989 at capsule filling yielded 34% of control.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 100%e0
- Outcome
- yieldede0
- Value
- 34%e0
- Qualifier
- capsule fillinge0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most severe defoliation (100%) in the nonclipped treatment yielded 93, 89, and 34% of the control in 1989 and 77, 72, and 16% of the control in 1990 when applied at the vegetative, flowering, and capsule filling stages, respectively.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Full defoliation in 1990 at vegetative yielded 77% of control.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 100%e0
- Outcome
- yieldede0
- Value
- 77e0
- Qualifier
- vegetativee0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most severe defoliation (100%) in the nonclipped treatment yielded 93, 89, and 34% of the control in 1989 and 77, 72, and 16% of the control in 1990 when applied at the vegetative, flowering, and capsule filling stages, respectively.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Full defoliation in 1990 at flowering yielded 72% of control.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 100%e0
- Outcome
- yieldede0
- Value
- 72e0
- Qualifier
- floweringe0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most severe defoliation (100%) in the nonclipped treatment yielded 93, 89, and 34% of the control in 1989 and 77, 72, and 16% of the control in 1990 when applied at the vegetative, flowering, and capsule filling stages, respectively.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Full defoliation in 1990 at capsule filling yielded 16% of control.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- 100%e0
- Outcome
- yieldede0
- Value
- 16%e0
- Qualifier
- capsule fillinge0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most severe defoliation (100%) in the nonclipped treatment yielded 93, 89, and 34% of the control in 1989 and 77, 72, and 16% of the control in 1990 when applied at the vegetative, flowering, and capsule filling stages, respectively.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Recovery with clipping declined more strongly at later growth stages.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- clipped treatmentse0
- Outcome
- magnitude of recovery from defoliatione0
- Direction
- decreasede0
- Comparator
- nonclipped treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The magnitude of recovery from defoliation in the clipped treatments also decreased with more advanced growth stage; however, this response was more pronounced in the clipped than the nonclipped treatments.”
t0“sesame ( Sesamum indicum L.)”
Claim · model-written summary
Full defoliation plus terminal removal after heavy fruiting caused the greatest yield reduction.
- Taxon
- sesame ( Sesamum indicum L.)Sesamum indicumt0
- Treatment
- all leaves were defoliated and the growth terminal removed after heavy fruitinge0
- Outcome
- seed yielde0
- Direction
- greatest reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest reduction in seed yield occurred when all leaves were defoliated and the growth terminal removed after heavy fruiting.”
t0“sesame ( Sesamum indicum L.)”
The same questions in other papers
pruning · yield · Sesamum indicum (sesame)Results differ
10 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
9 papers more in this group
See all 13 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.