Abstract
Abstract Sorghum is an important forage crop having good drought tolerance and high dry matter accumulation in a short growing season, and grown under diversified environments. Based on this, a 2‐year field study was executed to evaluate the effect of seed rate and nitrogen (N) levels on the fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition. Three forage sorghum cultivars (‘ JS –2002’, ‘ JS –263’ and ‘Chakwal Sorghum’) were sown with three N levels (0, 60 and 120 kg ha −1 ) by using three seed rates (75, 100 and 125 kg ha −1 ). Results showed that cv. ‘ JS –2002’ had higher contents of neutral detergent fiber ( NDF ), acid detergent fiber ( ADF ), acid detergent lignin ( ADL ) and cellulose, while ‘ JS –263’ produced greater soluble carbohydrate, total digestible nutrients ( TDN ), relative feed value ( RFV ) and net energy ( NE ) than other cultivars. Increasing N rates (0–120 kg ha −1 ) enhanced ADF , ADL , RFV and NE , but not NDF and TDN . Similarly, increased seed rate enhanced accumulation of NDF , ADF and ADL , while caused reduction of TDN , RFV and NE . In conclusion, cv. ‘ JS –2002’ performed better than the other two cultivars, whereas, sorghum seeded at 75 kg ha −1 with 120 kg N ha −1 application produced better quality forage at 50% heading stage.
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Claims 11
Claim · model-written summary
Cultivar JS –2002 had higher NDF, ADF and ADL contents than the other cultivars.
- Material
- JS –2002e1
- Outcome
- neutral detergent fiber ( NDF ), acid detergent fiber ( ADF ), acid detergent lignin ( ADL )e1
- Direction
- highere1
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e1“cv. ‘ JS –2002’ had higher contents of neutral detergent fiber ( NDF ), acid detergent fiber ( ADF ), acid detergent lignin ( ADL ) and cellulose”
Claim · model-written summary
Cultivar JS –2002 had higher cellulose content.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e1“cv. ‘ JS –2002’ had higher contents of neutral detergent fiber ( NDF ), acid detergent fiber ( ADF ), acid detergent lignin ( ADL ) and cellulose”
Claim · model-written summary
Cultivar JS –263 produced greater soluble carbohydrate, TDN and RFV than other cultivars.
- Material
- JS –263e2
- Outcome
- soluble carbohydrate, total digestible nutrients ( TDN ), relative feed value ( RFV )e2
- Direction
- greatere2
- Comparator
- other cultivarse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e2“‘ JS –263’ produced greater soluble carbohydrate, total digestible nutrients ( TDN ), relative feed value ( RFV ) and net energy ( NE ) than other cultivars”
Claim · model-written summary
Cultivar JS –263 produced greater net energy than other cultivars.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e2“‘ JS –263’ produced greater soluble carbohydrate, total digestible nutrients ( TDN ), relative feed value ( RFV ) and net energy ( NE ) than other cultivars”
Claim · model-written summary
Increasing N rates enhanced ADF, ADL and RFV in forage sorghum.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e3“Increasing N rates (0–120 kg ha −1 ) enhanced ADF , ADL , RFV and NE , but not NDF and TDN”
Claim · model-written summary
Increasing N rates enhanced net energy in forage sorghum.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e3“Increasing N rates (0–120 kg ha −1 ) enhanced ADF , ADL , RFV and NE , but not NDF and TDN”
Claim · model-written summary
Increasing N rates did not affect NDF and TDN in forage sorghum.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e3“Increasing N rates (0–120 kg ha −1 ) enhanced ADF , ADL , RFV and NE , but not NDF and TDN”
Claim · model-written summary
Increased seed rate enhanced accumulation of NDF, ADF and ADL in forage sorghum.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e4“increased seed rate enhanced accumulation of NDF , ADF and ADL , while caused reduction of TDN , RFV and NE”
Claim · model-written summary
Increased seed rate reduced TDN, RFV and NE in forage sorghum.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e4“increased seed rate enhanced accumulation of NDF , ADF and ADL , while caused reduction of TDN , RFV and NE”
Claim · model-written summary
Sorghum seeded at 75 kg/ha with 120 kg N/ha produced better quality forage at 50% heading stage.
- Treatment
- sorghum seeded at 75 kg ha −1 with 120 kg N ha −1 applicatione5
- Outcome
- better quality foragee5
- Qualifier
- at 50% heading stagee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e5“sorghum seeded at 75 kg ha −1 with 120 kg N ha −1 application produced better quality forage at 50% heading stage”
Claim · model-written summary
Cultivar JS –2002 performed better than the other two cultivars.
- Treatment
- cv. ‘ JS –2002’e6
- Outcome
- performed bettere6
- Direction
- bettere6
- Comparator
- the other two cultivarse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of forage sorghum cultivars harvested at different growth stages under semiarid condition”
e6“cv. ‘ JS –2002’ performed better than the other two cultivars”
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