Abstract
The influence of growing and incorporating summer cover crops on the subsequent vegetable crop production and on population densities of the root knot nematode, Meloido- gyne incognita, was investigated in field and pot experiments at Homestead, Florida. The cover crops utilized in the field and pot experiments were sunn hemp ( Crotalaria juncea ), cowpea ( Vigna unguiculata ), velvetbean ( Mucuna deeringiana ) and sorghum sudangrass ( Sorghum bicolor × S. bicolor var. sudanense). A nematode susceptible vegetable crop, okra ( Abelmoschus esculentus ) was grown in rotation with these given cover crops. The results indicated that all four cover crops improved the subsequent okra yields, and especially sunn hemp and velvetbean, which produced large amounts of biomass with high contents of nitrogen (N). The okra fruit yields in the field were increased by 33% and 11% in velvet- bean and sunn hemp treatments compared that in the sor- ghum sudangrass treatment, which is the conventional cover crop treatment in this area. In crop rotation studies conducted in pots, okra fruit yields were increased by 3.6, 3.1 and 1.5 times by rotation with sunn hemp, velvetbean and cowpea, re- spectively, compared to yields of okra following okra. Popula- tions of root-knot nematodes were substantially suppressed by sunn hemp, cowpea and velvetbean, and this suppression was especially strong by sunn hemp. Moreover, the root knot nematode suppressive effect of sunn hemp persisted to pro- tect a subsequent okra crop. The results indicate that rotating the summer cover crops, sunn hemp or velvetbean, with okra can significantly improve okra yields in addition to suppress- ing root knot nematodes.
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Claims 14
Claim · model-written summary
All four cover crops improved the subsequent okra yields.
- Taxon
- okra
.jpg?width=60)
Abelmoschus esculentust0 - Treatment
- cover cropse1
- Outcome
- okra yieldse1
- Direction
- improvede1
- Setting
- Homestead, Floridae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e1“all four cover crops improved the subsequent okra yields”
e2“was investigated in field and pot experiments at Homestead, Florida”
Claim · model-written summary
Sunn hemp produced large amounts of biomass with high contents of nitrogen.
- Taxon
- sunn hemp
Crotalaria junceae3 - Outcome
- biomasse3
- Qualifier
- high contents of nitrogen (N)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e3“especially sunn hemp and velvetbean, which produced large amounts of biomass with high contents of nitrogen (N)”
Claim · model-written summary
Velvetbean produced large amounts of biomass with high contents of nitrogen.
- Taxon
- velvetbean
.jpg?width=60)
Mucuna pruriens var. utilise3 - Outcome
- biomasse3
- Qualifier
- high contents of nitrogen (N)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e3“especially sunn hemp and velvetbean, which produced large amounts of biomass with high contents of nitrogen (N)”
Claim · model-written summary
Velvet- bean treatment increased okra fruit yields by 33% in the field compared with the sudangrass treatment.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- velvet- beane4
- Outcome
- okra fruit yieldse4
- Direction
- increasede4
- Value
- 33%e4
- Comparator
- sudangrass treatmente4
- Setting
- in the fielde4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e4“The okra fruit yields in the field were increased by 33% and 11% in velvet- bean and sunn hemp treatments compared that in the sor- ghum sudangrass treatment”
Claim · model-written summary
Sunn hemp treatment increased okra fruit yields by 11% in the field compared with the sudangrass treatment.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- sunn hempe4
- Outcome
- okra fruit yieldse4
- Direction
- increasede4
- Value
- 11%e4
- Comparator
- sudangrass treatmente4
- Setting
- in the fielde4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e4“The okra fruit yields in the field were increased by 33% and 11% in velvet- bean and sunn hemp treatments compared that in the sor- ghum sudangrass treatment”
Claim · model-written summary
Rotation with sunn hemp increased okra fruit yields 3.6 times compared with okra following okra in pots.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- rotation with sunn hempe5
- Outcome
- okra fruit yieldse5
- Direction
- increasede5
- Value
- 3.6e5
- Comparator
- okra following okrae5
- Setting
- potse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e5“In crop rotation studies conducted in pots, okra fruit yields were increased by 3.6, 3.1 and 1.5 times by rotation with sunn hemp, velvetbean and cowpea, re- spectively, compared to yields of okra following okra”
Claim · model-written summary
Rotation with velvetbean increased okra fruit yields 3.1 times compared with okra following okra in pots.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- velvetbeane5
- Outcome
- okra fruit yieldse5
- Direction
- increasede5
- Value
- 3.1e5
- Comparator
- okra following okrae5
- Setting
- potse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e5“In crop rotation studies conducted in pots, okra fruit yields were increased by 3.6, 3.1 and 1.5 times by rotation with sunn hemp, velvetbean and cowpea, re- spectively, compared to yields of okra following okra”
Claim · model-written summary
Rotation with cowpea increased okra fruit yields 1.5 times compared with okra following okra in pots.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- cowpeae5
- Outcome
- okra fruit yieldse5
- Direction
- increasede5
- Value
- 1.5e5
- Comparator
- okra following okrae5
- Setting
- potse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e5“In crop rotation studies conducted in pots, okra fruit yields were increased by 3.6, 3.1 and 1.5 times by rotation with sunn hemp, velvetbean and cowpea, re- spectively, compared to yields of okra following okra”
Claim · model-written summary
Sunn hemp suppressed root-knot nematode populations.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- sunn hempe6
- Interactor
- root-knot nematodes
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogynee6pest - Outcome
- Popula- tions of root-knot nematodese6
- Direction
- suppressede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e6“Popula- tions of root-knot nematodes were substantially suppressed by sunn hemp, cowpea and velvetbean”
Claim · model-written summary
Cowpea suppressed root-knot nematode populations.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- cowpeae6
- Interactor
- root-knot nematodesMeloidogynee6pest
- Outcome
- Popula- tions of root-knot nematodese6
- Direction
- suppressede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e6“Popula- tions of root-knot nematodes were substantially suppressed by sunn hemp, cowpea and velvetbean”
Claim · model-written summary
Velvetbean suppressed root-knot nematode populations.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- velvetbeane6
- Interactor
- root-knot nematodesMeloidogynee6pest
- Outcome
- Popula- tions of root-knot nematodese6
- Direction
- suppressede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e6“Popula- tions of root-knot nematodes were substantially suppressed by sunn hemp, cowpea and velvetbean”
Claim · model-written summary
The nematode suppression by sunn hemp was especially strong.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- sunn hempe7
- Outcome
- suppressione7
- Qualifier
- especially stronge7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e7“this suppression was especially strong by sunn hemp”
Claim · model-written summary
The root-knot nematode suppressive effect of sunn hemp persisted to protect a subsequent okra crop.
- Taxon
- okraAbelmoschus esculentust0
- Treatment
- sunn hempe7
- Interactor
- root knot nematodeMeloidogynee7pest
- Outcome
- suppressive effecte7
- Qualifier
- persisted to pro- tect a subsequent okra crope7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e7“Moreover, the root knot nematode suppressive effect of sunn hemp persisted to pro- tect a subsequent okra crop”
Claim · model-written summary
The authors recommend rotating sunn hemp or velvetbean with okra, which can significantly improve okra yields and suppress root-knot nematodes.
- Taxon
- okraAbelmoschus esculentust0
- Outcome
- rotating the summer cover crops, sunn hemp or velvetbean, with okrae7
- Qualifier
- can significantly improve okra yieldse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“OKRA ( ABELMOSCHUS ESCULENTUS L.) YIELD”
e7“The results indicate that rotating the summer cover crops, sunn hemp or velvetbean, with okra can significantly improve okra yields in addition to suppress- ing root knot nematodes”
The same questions in other papers
Vigna unguiculata · yield · Abelmoschus esculentus (okra)Positive and negative results
8 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
6 papers more in this group
See all 10 papers →Crotalaria juncea · yield · Abelmoschus esculentus (okra)Results agree
1 paper in the same direction as this paper
- positive
Crotalaria juncea · Meloidogyne · Abelmoschus esculentus (okra)Results agree
1 paper in the same direction as this paper
- positive
cover crop · yield · Abelmoschus esculentus (okra)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
rotation · yield · Abelmoschus esculentus (okra)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.