Abstract
Among the current methyl bromide alternatives under study, propylene oxide (Propozone) has shown potential to control soilborne diseases, nematodes, and weeds in polyethylene-mulched tomato. However, further research is needed to determine the appropriate application rates to control nutsedge in the crop. Also, the effect of this fumigant on tomato nutrient absorption has not been determined yet. Therefore, field trials were conducted for this purpose in Bradenton, Fla. Tested rates of Propozone were 0, 190, 380, 570, 760, and 950 L·ha –1 and were shank-applied in raised planting beds three weeks before `Florida 47' tomato transplanting. Examined data indicated that there was a rapid decrease in nutsedge density with 570 L·ha –1 . For phosphorus (P) and potassium (K) foliar content, there was a linear increase of P concentrations as rate increase, whereas K content increased rapidly after 190 L·ha –1 . The highest tomato yields were obtained with 760 and 950 L·ha –1 of Propozone.
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Claims 4
Claim · model-written summary
Nutsedge density decreased rapidly at 570 L·ha –1 Propozone.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- 570 L·ha –1e0
- Interactor
- nutsedget0weed
- Outcome
- nutsedge densitye0
- Direction
- rapid decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Examined data indicated that there was a rapid decrease in nutsedge density with 570 L·ha –1 .”
t0“TOMATO NUTRIENT ABSORPTION AND NUTSEDGE”
Claim · model-written summary
Foliar phosphorus rose linearly with Propozone rate.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Propozonee1
- Outcome
- P concentrationse0
- Direction
- linear increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“For phosphorus (P) and potassium (K) foliar content, there was a linear increase of P concentrations as rate increase, whereas K content increased rapidly after 190 L·ha –1 .”
t0“TOMATO NUTRIENT ABSORPTION AND NUTSEDGE (Cyperus SPP.) MANAGEMENT WITH PROPYLENE OXIDE”
e1“The highest tomato yields were obtained with 760 and 950 L·ha –1 of Propozone.”
Claim · model-written summary
Foliar potassium rose rapidly beyond 190 L·ha –1.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- 190 L·ha –1e0
- Outcome
- K contente0
- Direction
- increased rapidlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“For phosphorus (P) and potassium (K) foliar content, there was a linear increase of P concentrations as rate increase, whereas K content increased rapidly after 190 L·ha –1 .”
t0“TOMATO NUTRIENT ABSORPTION AND NUTSEDGE”
Claim · model-written summary
The highest tomato yields occurred at 760 and 950 L·ha –1 Propozone.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- 760 and 950 L·ha –1 of Propozonee0
- Outcome
- tomato yieldse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The highest tomato yields were obtained with 760 and 950 L·ha –1 of Propozone.”
t0“TOMATO NUTRIENT ABSORPTION AND NUTSEDGE”