Abstract
BACKGROUND: Fallow period weed management is an important Florida production consideration due to its duration and impact on the cash crop. Cover cropping is a valuable summer fallow period option for weed suppression. Sorghum-sudangrass is a commonly used, competitive, and allelopathic Florida summer cover crop. The effect of increased seeding rate, a herbicide application, and added fertilizer inputs during the fallow period on the cover crop, weed populations, and cabbage yield was explored and compared to nontreated and chemical fallow controls. RESULTS: Increased sorghum-sudangrass seeding rates had no effect on the resultant stand density or biomass compared to the standard seeding rate. Cover cropping did not consistently suppress purple nutsedge, Florida pusley, or wild radish and added fertilizer inputs produced variable results. S-metolachlor enhanced purple nutsedge suppression at low densities but did not improve grass, wild radish, and Florida pusley suppression. CONCLUSIONS: Increased fallow management inputs did not consistently enhance weed suppression or provide benefit to the cash crop. Sorghum-sudangrass suppressed Poaceae densities during the fallow period but did not adequately suppress nutsedge, wild radish, or Florida pusley densities over time. We conclude that weed management inputs should be focused on the cash crop and that enhanced management during the fallow period has limited benefit. © 2021 Society of Chemical Industry.
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Claims 16
Claim · model-written summary
Higher sorghum-sudangrass seeding rate did not change cover crop stand density or biomass.
Verbatim
e0“Increased sorghum-sudangrass seeding rates had no effect on the resultant stand density or biomass compared to the standard seeding rate”
t0“cabbage production”
Claim · model-written summary
Cover cropping did not consistently suppress purple nutsedge.
- Taxon
- cabbage
Brassica oleracea var. capitatat0 - Treatment
- Cover croppinge0
- Interactor
- purple nutsedgee0weed
- Outcome
- purple nutsedgee0
- Direction
- did not consistently suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cover cropping did not consistently suppress purple nutsedge, Florida pusley, or wild radish”
t0“cabbage production”
Claim · model-written summary
Cover cropping did not consistently suppress Florida pusley.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Cover croppinge0
- Interactor
- Florida pusleye0weed
- Outcome
- Florida pusleye0
- Direction
- did not consistently suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cover cropping did not consistently suppress purple nutsedge, Florida pusley, or wild radish”
t0“cabbage production”
Claim · model-written summary
Cover cropping did not consistently suppress wild radish.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Cover croppinge0
- Interactor
- wild radish
_Raphanus_raphanistrum_-_flowers.jpg?width=60)
Raphanus raphanistrume0weed - Outcome
- wild radishe0
- Direction
- did not consistently suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Raphanus_raphanistrum_-_flowers.jpg?width=500)
Verbatim
e0“Cover cropping did not consistently suppress purple nutsedge, Florida pusley, or wild radish”
t0“cabbage production”
Claim · model-written summary
Added fertilizer inputs had variable results.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- added fertilizer inputse0
- Outcome
- variable resultse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“added fertilizer inputs produced variable results”
t0“cabbage production”
Claim · model-written summary
S-metolachlor enhanced purple nutsedge suppression at low densities.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- S-metolachlore0
- Interactor
- purple nutsedgee0weed
- Outcome
- purple nutsedge suppressione0
- Direction
- enhancede0
- Qualifier
- low densitiese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S-metolachlor enhanced purple nutsedge suppression at low densities”
t0“cabbage production”
Claim · model-written summary
S-metolachlor did not improve grass suppression.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- S-metolachlore0
- Interactor
- grasse0weed
- Outcome
- grasse0
- Direction
- did not improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S-metolachlor enhanced purple nutsedge suppression at low densities but did not improve grass, wild radish, and Florida pusley suppression”
t0“cabbage production”
Claim · model-written summary
S-metolachlor did not improve wild radish suppression.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- S-metolachlore0
- Interactor
- wild radishRaphanus raphanistrume0weed
- Outcome
- wild radishe0
- Direction
- did not improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S-metolachlor enhanced purple nutsedge suppression at low densities but did not improve grass, wild radish, and Florida pusley suppression”
t0“cabbage production”
Claim · model-written summary
S-metolachlor did not improve Florida pusley suppression.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- S-metolachlore0
- Interactor
- Florida pusleye0weed
- Outcome
- Florida pusley suppressione0
- Direction
- did not improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S-metolachlor enhanced purple nutsedge suppression at low densities but did not improve grass, wild radish, and Florida pusley suppression”
t0“cabbage production”
Claim · model-written summary
Enhanced fallow inputs did not consistently improve weed suppression.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Increased fallow management inputse0
- Outcome
- weed suppressione0
- Direction
- did not consistently enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased fallow management inputs did not consistently enhance weed suppression”
t0“cabbage production”
Claim · model-written summary
Enhanced fallow inputs did not provide benefit to the cabbage crop.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Increased fallow management inputse0
- Outcome
- benefit to the cash crope0
- Direction
- did not consistently enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased fallow management inputs did not consistently enhance weed suppression or provide benefit to the cash crop”
t0“cabbage production”
Claim · model-written summary
Sorghum-sudangrass suppressed Poaceae density during fallow.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Sorghum-sudangrasse0
- Outcome
- Poaceae densitiese0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum-sudangrass suppressed Poaceae densities during the fallow period”
t0“cabbage production”
Claim · model-written summary
Sorghum-sudangrass did not adequately suppress nutsedge density over time.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Sorghum-sudangrasse0
- Interactor
- nutsedgee0weed
- Outcome
- nutsedgee0
- Direction
- did not adequately suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum-sudangrass suppressed Poaceae densities during the fallow period but did not adequately suppress nutsedge, wild radish, or Florida pusley densities over time”
t0“cabbage production”
Claim · model-written summary
Sorghum-sudangrass did not adequately suppress wild radish density over time.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Sorghum-sudangrasse0
- Interactor
- wild radishRaphanus raphanistrume0weed
- Outcome
- wild radishe0
- Direction
- did not adequately suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum-sudangrass suppressed Poaceae densities during the fallow period but did not adequately suppress nutsedge, wild radish, or Florida pusley densities over time”
t0“cabbage production”
Claim · model-written summary
Sorghum-sudangrass did not adequately suppress Florida pusley density over time.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Sorghum-sudangrasse0
- Interactor
- Florida pusleye0weed
- Outcome
- Florida pusley densitiese0
- Direction
- did not adequately suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum-sudangrass suppressed Poaceae densities during the fallow period but did not adequately suppress nutsedge, wild radish, or Florida pusley densities over time”
t0“cabbage production”
Claim · model-written summary
Authors recommend focusing weed management inputs on the cash crop.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Outcome
- weed management inputs should be focused on the cash crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed management inputs should be focused on the cash crop”
t0“cabbage production”