Abstract
Sugarcane (interspecific hybrids of Saccharum spp.) in the Everglades Agricultural Area (EAA) in Florida is frequently subjected to periods of higher-than-desired water levels. This study was conducted to evaluate yields of nine sugarcane cultivars subjected to two higher-than-conventional water tables in the EAA during the summer rainy season from the plant cane through the second-ratoon annual crop cycles. Field experiments were planted in February 1997 and January 1998. During the summers from 1997 through 1999, we sought to maintain water <15 cm below the soil surface (BSS) in the wetter field and from 15 to 38 cm BSS in the drier field. Water tables for sugarcane in the EAA fluctuate from 40 to 95 cm BSS. Targeted water levels were achieved for 40 d in 1997, 104 d in 1998, and 96 d in 1999 in the wetter field and for 35 d in 1997, 96 d in 1998, and 82 d in 1999 in the drier field. The mean sugar per hectare in the wetter field was 91.7% that of the drier field. Yields of ‘Canal Point (CP) 72–2086’ and ‘CP 82–1172’ were not affected by water table. Cultivar CP 85–1308 had higher yields in the wetter field in two of five harvests. Sugar per hectare of ‘CP 80–1743’ was reduced by 25.1% in the wetter field. The variability among commercial cultivars to maintain yields at high water tables suggests that routine screening of promising sugarcane genotypes under high water tables would help identify more cultivars that maintain high yields in wetter conditions in the EAA.
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Claims 6
Claim · model-written summary
Mean sugar per hectare in the wetter field was 91.7% of the drier field.
Verbatim
e0“The mean sugar per hectare in the wetter field was 91.7% that of the drier field.”
t0“Sugarcane”
Claim · model-written summary
Yield of CP 72–2086 was unaffected by water table.
- Taxon
- Sugarcanet0
- Material
- Canal Point (CP) 72–2086e0
- Treatment
- water tablee0
- Outcome
- Yieldse0
- Direction
- not affectede0
Not reportedComparator
Verbatim
e0“Yields of ‘Canal Point (CP) 72–2086’ and ‘CP 82–1172’ were not affected by water table.”
t0“Sugarcane”
Claim · model-written summary
Yield of CP 82–1172 was unaffected by water table.
Not reportedComparator
Verbatim
e0“Yields of ‘Canal Point (CP) 72–2086’ and ‘CP 82–1172’ were not affected by water table.”
t0“Sugarcane”
Claim · model-written summary
CP 85–1308 yielded more in the wetter field in two of five harvests.
Verbatim
e0“Cultivar CP 85–1308 had higher yields in the wetter field in two of five harvests.”
t0“Sugarcane”
e1“that of the drier field.”
Claim · model-written summary
Sugar per hectare of CP 80–1743 fell 25.1% in the wetter field.
Verbatim
e0“Sugar per hectare of ‘CP 80–1743’ was reduced by 25.1% in the wetter field.”
t0“Sugarcane”
e1“that of the drier field.”
Claim · model-written summary
The authors recommend routine screening of sugarcane genotypes under high water tables to identify cultivars that maintain yield.
Verbatim
e0“routine screening of promising sugarcane genotypes under high water tables would help identify more cultivars that maintain high yields in wetter conditions in the EAA.”
The same questions in other papers
soil water · yield · Saccharum officinarum (sugarcane)Positive and negative results
3 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- positive
- positive
5 papers more in this group
See all 9 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.