Abstract
Abstract Sweet sorghum [ Sorghum bicolor (L.) Moench] is known for high production potential, even on marginal land. Field research was conducted in northeast and southeast Louisiana for 3 yr to determine the changes of sweet sorghum productivity and soil‐chemical properties influenced by applications of tillage and legume cover crop. Crimson clover ( Trifolium incarnatum L.), and hairy vetch ( Vicia villosa Roth) were planted in the fall and then compared for the following sweet sorghum production and soil‐chemical properties with those receiving 0, 56, and 112 kg ha −1 of synthetic N fertilizer under conventional tillage (CT) or no‐tillage (NT). Sweet sorghum cultivated after either legume cover crop produced equivalent amounts of sweet sorghum biomass and sugar as those of sweet sorghum receiving 56 or 112 kg ha −1 N fertilization. Increasing N fertilization rates from 56 to 112 kg ha −1 did not increase sweet sorghum production. Proportion of sucrose averaged 48% of fermentable carbohydrate in the juice, followed by glucose (23%) and fructose (16%). The proportion of sugars did not differ regardless of tillage or N treatment. Potential N production from hairy vetch ranged from 74–108 kg ha −1 , which was greater than that from crimson clover. The benefit of CT was found in greater fresh biomass and higher plant population of sweet sorghum compared to those of NT. Soil organic matter varied in years and cultivation practices. Due to moderate N demand of sweet sorghum, legume cover crops are promising N providers without sweet sorghum production losses.
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Claims 10
Claim · model-written summary
Sweet sorghum after a legume cover crop produced biomass and sugar equivalent to sweet sorghum receiving synthetic N fertilization.
Verbatim
e0“Sweet sorghum [ Sorghum bicolor (L.) Moench] is known for high production potential, even on marginal land”
e1“Sweet sorghum cultivated after either legume cover crop produced equivalent amounts of sweet sorghum biomass and sugar as those of sweet sorghum receiving 56 or 112 kg ha −1 N fertilization”
Claim · model-written summary
Increasing N fertilization from 56 to 112 kg ha −1 did not increase sweet sorghum production.
Verbatim
e0“Sweet sorghum [ Sorghum bicolor (L.) Moench] is known for high production potential, even on marginal land”
e2“Increasing N fertilization rates from 56 to 112”
e3“did not increase sweet sorghum production”
Claim · model-written summary
Conventional tillage gave greater fresh biomass and higher plant population of sweet sorghum than no-tillage.
Verbatim
e4“The benefit of CT was found in greater fresh biomass and higher plant population of sweet sorghum compared to those of NT”
Claim · model-written summary
Sucrose averaged 48% of fermentable carbohydrate in the sweet sorghum juice.
Verbatim
e0“Sweet sorghum [ Sorghum bicolor (L.) Moench] is known for high production potential, even on marginal land”
e5“Proportion of sucrose averaged 48% of fermentable carbohydrate in the juice”
Claim · model-written summary
Glucose made up 23% of fermentable carbohydrate in the sweet sorghum juice.
Verbatim
e0“Sweet sorghum [ Sorghum bicolor (L.) Moench] is known for high production potential, even on marginal land”
e6“Proportion of sucrose averaged 48% of fermentable carbohydrate in the juice, followed by glucose (23%)”
Claim · model-written summary
Fructose made up 16% of fermentable carbohydrate in the sweet sorghum juice.
Verbatim
e0“Sweet sorghum [ Sorghum bicolor (L.) Moench] is known for high production potential, even on marginal land”
e7“followed by glucose (23%) and fructose (16%)”
Claim · model-written summary
The proportion of sugars in sweet sorghum did not differ regardless of tillage or N treatment.
Verbatim
e0“Sweet sorghum [ Sorghum bicolor (L.) Moench] is known for high production potential, even on marginal land”
e1“The proportion of sugars did not differ regardless of tillage or N treatment”
Claim · model-written summary
Potential N production from hairy vetch, 74–108, was greater than that from crimson clover.
- Taxon
- hairy vetch
Vicia villosae1 - Treatment
- hairy vetche1
- Outcome
- Potential N productione1
- Direction
- greatere2
- Value
- 74–108e1
- Comparator
- crimson clovere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Potential N production from hairy vetch ranged from 74–108”
e2“which was greater than that from crimson clover”
Claim · model-written summary
Legume cover crops are promising N providers for sweet sorghum without production losses.
Verbatim
e0“Sweet sorghum [ Sorghum bicolor (L.) Moench] is known for high production potential, even on marginal land”
e1“Due to moderate N demand of sweet sorghum, legume cover crops are promising N providers without sweet sorghum production losses”
Claim · model-written summary
Soil organic matter varied in years and cultivation practices in the sweet sorghum trials.
Verbatim
e0“Sweet sorghum [ Sorghum bicolor (L.) Moench] is known for high production potential, even on marginal land”
e1“Soil organic matter varied in years and cultivation practices”
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