Abstract
Periodically flooding sugarcane ( Saccharum spp.) by delaying drainage after rain in the Everglades Agricultural Area (EAA) of Florida improves soil conservation and reduces P discharge to the Everglades, but farmers are concerned that flooding recently planted or recently ratooned sugarcane reduces yields. The purpose of this study was to determine the effects of time of flood onset and flood duration on stalk, leaf, and root biomass accretion of two recently planted (plant height ∼ 9 cm) sugarcane cultivars. In three pot experiments, flood durations ranged from 0 to 6 wk and flood onsets were after 2 or 4 wk at a 30‐cm water‐table depth. Five treatments also had a second flood onset during the final 4 or 6 wk of each experiment. Increased flood durations often resulted in declines in biomass explained by linear or quadratic models. Compared with ‘CP 89‐2143,’ leaf and stalk biomasses of ‘CP 96‐1252’ were more tolerant of increasing flood durations, but the opposite was true for root biomass. Sugarcane leaf biomass was reduced more by flood onset following 2 rather than 4 wk at a 30‐cm water‐table depth, but stalk and root biomasses were similarly reduced by both flood onsets. Although previous results have indicated that well‐established sugarcane in its grand‐growth phase is tolerant to periodic flooding, our results suggest that the biomass of younger (recently planted) sugarcane is increasingly reduced by flood durations of 0 to 6 wk and that flood onsets after 2 or 4 wk at a 30‐cm water‐table depth are similarly detrimental.
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Claims 5
Claim · model-written summary
Longer flooding often decreased sugarcane biomass.
Not reportedComparator
Verbatim
e0“Increased flood durations often resulted in declines in biomass”
e1“sugarcane ( Saccharum spp.)”
Claim · model-written summary
CP 96-1252 leaf and stalk biomass tolerated longer floods better than CP 89-2143.
Verbatim
e0“Compared with ‘CP 89‐2143,’ leaf and stalk biomasses of ‘CP 96‐1252’ were more tolerant of increasing flood durations”
e1“sugarcane ( Saccharum spp.)”
Claim · model-written summary
CP 96-1252 root biomass tolerated flooding less than CP 89-2143.
Verbatim
e0“Compared with ‘CP 89‐2143,’ leaf and stalk biomasses of ‘CP 96‐1252’ were more tolerant of increasing flood durations, but the opposite was true for root biomass”
e1“sugarcane ( Saccharum spp.)”
Claim · model-written summary
Flood onset after two weeks reduced sugarcane leaf biomass more than onset after four weeks.
- Taxon
- Sugarcanee0
- Treatment
- flood onset following 2e0
- Outcome
- leaf biomasse0
- Direction
- reduced moree0
- Comparator
- 4 wke0
Not reportedSetting
Verbatim
e0“Sugarcane leaf biomass was reduced more by flood onset following 2 rather than 4 wk at a 30‐cm water‐table depth”
Claim · model-written summary
Stalk and root biomasses were similarly reduced by both flood onsets.
Not reportedComparator
Verbatim
e0“stalk and root biomasses were similarly reduced by both flood onsets”
e1“sugarcane ( Saccharum spp.)”
The same questions in other papers
flooding · growth · Saccharum officinarum (sugarcane)Results differ
8 papers in the same direction as this paper · 7 in the opposite direction
- negative
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See all 16 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.