Abstract
This study investigated the effects of two soil moisture levels (SM) (30% and 70% soil available water) and three harvests (90 days, 118 days, and 151 days after seeding) on sweet (S506) and fiber (B133) sorghum genotypes under rain-sheltered conditions. Juice and bagasse-derived ethanol and their sum (EtOHBJ, EtOHB, and EtOHJ+B, respectively) were assessed. Water use efficiency (WUE) was determined for sorghum dry weight (DW) and EtOHJ+B. S506 had similar DW, but higher sugar content than B133, resulting in higher EtOHJ (+32%) and EtOHJ+B (+9%). High SM-enhanced DW, juice and sugars content, determining a strong EtOHJ+B increase (+99% vs. low SM). Late harvest enhanced DW and EtOHJ+B (+107% vs. early harvest), despite decreasing extractives and increasing structural fiber components. Water use efficiency of EtOHJ+B improved with high vs. low SM, although differences faded in late harvest. Upscale of EtOHJ+B and WUE data indicated a range of 21,000–82,000 ha of sorghum cultivation and 60–117 Mm3 of irrigation water, as amounts of resources needed to supply an 85,000 m3·yr−1 bio-ethanol plant. This large variation in land and water needs depended on specific combinations between crop factors SM and harvests.
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Claims 13
Claim · model-written summary
S506 had similar dry weight to B133.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S506 had similar DW, but higher sugar content than B133”
t0“Sorghum Juice”
Claim · model-written summary
S506 had higher sugar content than B133.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S506 had similar DW, but higher sugar content than B133”
t0“Sorghum Juice”
Claim · model-written summary
S506 had 32% higher juice ethanol than B133.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S506 had similar DW, but higher sugar content than B133, resulting in higher EtOHJ (+32%)”
t0“Sorghum Juice”
Claim · model-written summary
S506 had 9% higher combined ethanol than B133.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S506 had similar DW, but higher sugar content than B133, resulting in higher EtOHJ (+32%) and EtOHJ+B (+9%)”
t0“Sorghum Juice”
Claim · model-written summary
High soil moisture enhanced dry weight, juice and sugar content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High SM-enhanced DW, juice and sugars content”
t0“Sorghum Juice”
Claim · model-written summary
High soil moisture increased combined ethanol 99% relative to low moisture.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High SM-enhanced DW, juice and sugars content, determining a strong EtOHJ+B increase (+99% vs. low SM)”
t0“Sorghum Juice”
Claim · model-written summary
Late harvest enhanced dry weight.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late harvest enhanced DW and EtOHJ+B (+107% vs. early harvest)”
t0“Sorghum Juice”
Claim · model-written summary
Late harvest enhanced combined ethanol 107% versus early harvest.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late harvest enhanced DW and EtOHJ+B (+107% vs. early harvest)”
t0“Sorghum Juice”
Claim · model-written summary
Late harvest decreased extractives.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late harvest enhanced DW and EtOHJ+B (+107% vs. early harvest), despite decreasing extractives”
t0“Sorghum Juice”
Claim · model-written summary
Late harvest increased structural fiber components.
- Treatment
- Late harveste0
- Outcome
- structural fiber componentse0
- Direction
- increasinge0
- Comparator
- early harveste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late harvest enhanced DW and EtOHJ+B (+107% vs. early harvest), despite decreasing extractives and increasing structural fiber components”
t0“Sorghum Juice”
Claim · model-written summary
High moisture improved combined ethanol water use efficiency relative to low moisture, with differences fading at late harvest.
- Treatment
- highe0
- Outcome
- Water use efficiency of EtOHJ+Be0
- Direction
- improvede0
- Qualifier
- differences faded in late harveste0
- Comparator
- low SMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water use efficiency of EtOHJ+B improved with high vs. low SM, although differences faded in late harvest”
t0“Sorghum Juice”
Claim · model-written summary
Upscaling indicated 21,000–82,000 ha of sorghum needed for the specified ethanol plant.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“21,000–82,000 ha of sorghum cultivation”
t0“Sorghum Juice”
Claim · model-written summary
Upscaling indicated 60–117 Mm3 of irrigation water needed for the specified ethanol plant.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60–117 Mm3 of irrigation water”
t0“Sorghum Juice”
The same questions in other papers
soil water · growth · SorghumPositive and negative results
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See all 13 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.