Abstract
If sweet sorghum [ Sorghum bicolor (L.) Moench] is to be successfully deployed for sugar and biofuel production, agronomic systems must be developed that maximize the duration of the harvest season. Using available sweet sorghum hybrids, the goal of this study was to determine optimum planting dates and hybrid maturity selection to maximize the duration and yield of a harvest season for a subtropical production environment. Ten sweet sorghum hybrids representing three maturity classes (early, medium, and late) and three planting dates (April, May, and June) were evaluated in replicated trials in 2010 and 2011 in College Station, TX, and each maturity class was harvested to maximize biomass and sugar yields. At this location, sweet sorghum hybrids can be continually harvested from late July to early November. During this time, sugar yields are lowest at the beginning of the season (2.6 Mg ha −1 ) and highest from late August through early October (5.3 Mg ha −1 ). As expected, yields are maximized by medium and late maturing hybrids planted in April, but early maturity hybrids and late planting dates are necessary to extend the range of the harvest season. The harvest season of sweet sorghum in this environment is very complementary to the sugarcane ( Saccharum officinarum L.) harvest season, indicating that these two crops could be grown and harvested in sequence to extend a mill season in most regions of the world where sugarcane is produced.
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Claims 7
Claim · model-written summary
Sweet sorghum hybrids could be harvested continuously from late July to early November at College Station.
- Taxon
- sweet sorghume0
- Outcome
- continually harvested from late July to early Novembere0
- Setting
- College Station, TXe1
Not reportedDirection
Verbatim
e0“At this location, sweet sorghum hybrids can be continually harvested from late July to early November.”
e1“in College Station, TX”
Claim · model-written summary
Early-season sugar yield was lowest at 2.6 Mg ha −1.
Verbatim
e0“sugar yields are lowest at the beginning of the season (2.6 Mg ha −1 )”
e1“Ten sweet sorghum hybrids representing three maturity classes”
Claim · model-written summary
Sugar yield peaked at 5.3 Mg ha −1 from late August through early October.
Verbatim
e0“highest from late August through early October (5.3 Mg ha −1 )”
e1“sugar yields are lowest at the beginning of the season”
e2“Ten sweet sorghum hybrids representing three maturity classes”
Claim · model-written summary
April planting of medium and late hybrids maximized yields.
- Taxon
- sweet sorghume1
- Treatment
- medium and late maturing hybrids planted in Aprile0
- Outcome
- yieldse0
- Direction
- maximizede0
Not reportedComparator
Verbatim
e0“yields are maximized by medium and late maturing hybrids planted in April”
e1“Ten sweet sorghum hybrids representing three maturity classes”
Claim · model-written summary
Early-maturing hybrids extended the harvest season.
Verbatim
e0“early maturity hybrids and late planting dates are necessary to extend the range of the harvest season”
e1“Ten sweet sorghum hybrids representing three maturity classes”
Claim · model-written summary
Late planting dates extended the harvest season.
- Taxon
- sweet sorghume1
- Treatment
- late planting datese0
- Outcome
- range of the harvest seasone0
- Direction
- extende0
Not reportedComparator
Verbatim
e0“early maturity hybrids and late planting dates are necessary to extend the range of the harvest season”
e1“Ten sweet sorghum hybrids representing three maturity classes”
Claim · model-written summary
Sweet sorghum harvest timing complements the sugarcane harvest season and could extend mill operation.
Verbatim
e0“The harvest season of sweet sorghum in this environment is very complementary to the sugarcane ( Saccharum officinarum L.) harvest season, indicating that these two crops could be grown and harvested in sequence to extend a mill season”
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