Abstract
The objective of this investigate is to evaluate the variation in yield and fuel quality of corn stover under different harvest time and to determine appropriate harvest time. Using Zhengdan 958 as research material, the effect of harvest time on yield and fuel quality of corn stover was studied under field conditions in Baicheng Academy of Agricultural Sciences, during 2007-2008. Results showed that with the delayed harvest time, yield of corn stover decreased, and the proportion of leaves reduced gradually, reduction of leaf biomass was the main reason for lower yield. With the delayed harvest time, moisture, ash, and mineral elements contents of corn stover significantly decreased, cellulose and lignin contents increased, but hemicellulose content decreased. Heating value of corn stover was maximum at filling stage and minimum at maturity, it was slightly higher after maturity. Heating value was significantly correlated with cellulose and lignin contents; ash content was significantly positively correlated with mineral elements contents, and was significantly negatively correlated with Si/K ratio. Delayed harvest reduced the yield of corn stover, but significantly improved its fuel quality. Fuel quality of corn stover was better when harvested in winter and spring.
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Claims 14
Claim · model-written summary
Delayed harvest time decreased corn stover yield.
- Taxon
- corn
Zea mays subsp. mayse3 - Material
- Zhengdan 958e1
- Treatment
- delayed harvest timee3
- Outcome
- yield of corn stovere3
- Direction
- decreasede3
- Setting
- field conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e3“with the delayed harvest time, yield of corn stover decreased”
Claim · model-written summary
Delayed harvest time decreased the proportion of leaves in corn stover.
- Taxon
- cornZea mays subsp. mayse3
- Material
- Zhengdan 958e1
- Treatment
- delayed harvest timee3
- Outcome
- proportion of leavese4
- Direction
- reducede4
- Setting
- field conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e3“with the delayed harvest time, yield of corn stover decreased”
e4“the proportion of leaves reduced gradually, reduction of leaf biomass was the main reason for lower yield”
Claim · model-written summary
Reduction of leaf biomass was the main reason for the lower corn stover yield under delayed harvest.
- Taxon
- cornZea mays subsp. mayse3
- Material
- Zhengdan 958e1
- Outcome
- lower yielde4
- Qualifier
- reduction of leaf biomass was the main reasone4
- Setting
- field conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e3“with the delayed harvest time, yield of corn stover decreased”
e4“the proportion of leaves reduced gradually, reduction of leaf biomass was the main reason for lower yield”
Claim · model-written summary
Delayed harvest time significantly decreased moisture, ash and mineral elements contents of corn stover.
- Taxon
- cornZea mays subsp. mayse5
- Material
- Zhengdan 958e1
- Treatment
- delayed harvest timee5
- Outcome
- moisture, ash, and mineral elements contentse5
- Direction
- decreasede5
- Setting
- field conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e5“With the delayed harvest time, moisture, ash, and mineral elements contents of corn stover significantly decreased, cellulose and lignin contents increased, but hemicellulose content decreased”
Claim · model-written summary
Delayed harvest time increased cellulose and lignin contents of corn stover.
- Taxon
- cornZea mays subsp. mayse5
- Material
- Zhengdan 958e1
- Treatment
- delayed harvest timee5
- Outcome
- cellulose and lignin contentse5
- Direction
- increasede5
- Setting
- field conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e5“With the delayed harvest time, moisture, ash, and mineral elements contents of corn stover significantly decreased, cellulose and lignin contents increased, but hemicellulose content decreased”
Claim · model-written summary
Delayed harvest time decreased hemicellulose content of corn stover.
- Taxon
- cornZea mays subsp. mayse5
- Material
- Zhengdan 958e1
- Treatment
- delayed harvest timee5
- Outcome
- hemicellulose contente5
- Direction
- decreasede5
- Setting
- field conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e5“With the delayed harvest time, moisture, ash, and mineral elements contents of corn stover significantly decreased, cellulose and lignin contents increased, but hemicellulose content decreased”
Claim · model-written summary
Heating value of corn stover was maximum at filling stage.
- Taxon
- cornZea mays subsp. mayse6
- Material
- Zhengdan 958e1
- Organ / stage
- filling stagee6
- Outcome
- Heating valuee6
- Direction
- maximume6
- Setting
- field conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e6“Heating value of corn stover was maximum at filling stage and minimum at maturity, it was slightly higher after maturity”
Claim · model-written summary
Heating value of corn stover was minimum at maturity.
- Taxon
- cornZea mays subsp. mayse6
- Material
- Zhengdan 958e1
- Organ / stage
- maturitye6
- Outcome
- Heating valuee6
- Direction
- minimume6
- Setting
- field conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e6“Heating value of corn stover was maximum at filling stage and minimum at maturity, it was slightly higher after maturity”
Claim · model-written summary
Heating value of corn stover was slightly higher after maturity.
- Taxon
- cornZea mays subsp. mayse6
- Material
- Zhengdan 958e1
- Organ / stage
- after maturitye6
- Outcome
- Heating valuee6
- Direction
- slightly highere6
- Setting
- field conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e6“Heating value of corn stover was maximum at filling stage and minimum at maturity, it was slightly higher after maturity”
Claim · model-written summary
Heating value of corn stover was significantly correlated with cellulose and lignin contents.
- Taxon
- cornZea mays subsp. mayse6
- Material
- Zhengdan 958e1
- Compound
- cellulose and lignine7
- Outcome
- Heating valuee7
- Setting
- field conditionse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e6“Heating value of corn stover was maximum at filling stage and minimum at maturity, it was slightly higher after maturity”
e7“Heating value was significantly correlated with cellulose and lignin contents; ash content was significantly positively correlated with mineral elements contents, and was significantly negatively correlated with Si/K ratio”
Claim · model-written summary
Ash content of corn stover was significantly positively correlated with mineral elements contents.
- Taxon
- cornZea mays subsp. mayse6
- Material
- Zhengdan 958e1
- Compound
- mineral elementse7
- Outcome
- ash contente7
- Direction
- positivelye7
- Setting
- field conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e6“Heating value of corn stover was maximum at filling stage and minimum at maturity, it was slightly higher after maturity”
e7“Heating value was significantly correlated with cellulose and lignin contents; ash content was significantly positively correlated with mineral elements contents, and was significantly negatively correlated with Si/K ratio”
Claim · model-written summary
Ash content of corn stover was significantly negatively correlated with Si/K ratio.
- Taxon
- cornZea mays subsp. mayse6
- Material
- Zhengdan 958e1
- Compound
- Si/K ratioe7
- Outcome
- ash contente7
- Direction
- negativelye7
- Setting
- field conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e6“Heating value of corn stover was maximum at filling stage and minimum at maturity, it was slightly higher after maturity”
e7“Heating value was significantly correlated with cellulose and lignin contents; ash content was significantly positively correlated with mineral elements contents, and was significantly negatively correlated with Si/K ratio”
Claim · model-written summary
Delayed harvest significantly improved fuel quality of corn stover.
- Taxon
- cornZea mays subsp. mayse0
- Material
- Zhengdan 958e1
- Treatment
- Delayed harveste0
- Outcome
- fuel qualitye0
- Direction
- improvede0
- Setting
- field conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e0“Delayed harvest reduced the yield of corn stover, but significantly improved its fuel quality”
Claim · model-written summary
Fuel quality of corn stover was better when harvested in winter and spring.
- Taxon
- cornZea mays subsp. mayse3
- Material
- Zhengdan 958e1
- Treatment
- harvested in winter and springe3
- Outcome
- Fuel qualitye3
- Direction
- bettere3
- Setting
- field conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Using Zhengdan 958 as research material”
e2“under field conditions in Baicheng Academy of Agricultural Sciences”
e3“Fuel quality of corn stover was better when harvested in winter and spring”
The same questions in other papers
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- negative
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- positive
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See all 13 papers →stage · quality: general · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
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.