Abstract
In order to select a best suitable planting density for KRK26 introduced from Zimbabwe,one field plot experiment consisting of 5 planting density treatments(line space 120cm;plant space 45,50,55,60,65 cm) was carried out,and then tobacco growing status,leaf yield and value,leaf characteristics after curing were investigated and chemical components content in leaf were detected.Results showed that tobacco plant grown faster under higher planting density treatment 120 cm×45-50 cm than 120 cm×60-65 cm on the later vegetative growing period(60 days after transplanting).Higher planting density contributed to increasing in tobacco leaf yield,but leaf value did not increase correspondingly.As for chemical components content in tobacco leaf,the content of carbohydrates(total sugar,reducing sugar and starch),ratio of total sugar and nicotine,total nitrogen and nicotine increased as plant density declined.The difference in contents between total sugar and reducing sugar,total nitrogen,nicotine,petroleum ether extraction,volatile acid and volatile bases decreased as plant density declined.The changing rule of polyphenols and K contents with plant density was not unobvious.Therefore,the planting density for KRK26 in Yuxi area should be controlled in the range from 120 cm×55-60 cm.
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Claims 9
Claim · model-written summary
Higher planting density treatment 120 cm×45-50 cm made tobacco plants grow faster than 120 cm×60-65 cm in the later vegetative period
- Taxon
- tobacco
Nicotiana tabacume1 - Treatment
- higher planting density treatment 120 cm×45-50 cme1
- Outcome
- plant grown fastere1
- Direction
- fastere1
- Comparator
- 120 cm×60-65 cme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“tobacco plant grown faster under higher planting density treatment 120 cm×45-50 cm than 120 cm×60-65 cm on the later vegetative growing period”
Claim · model-written summary
Higher planting density increased tobacco leaf yield
- Taxon
- tobaccoNicotiana tabacume2
- Treatment
- Higher planting densitye2
- Outcome
- tobacco leaf yielde2
- Direction
- increasinge2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Higher planting density contributed to increasing in tobacco leaf yield,but leaf value did not increase correspondingly”
Claim · model-written summary
Higher planting density did not increase tobacco leaf value correspondingly
- Taxon
- tobaccoNicotiana tabacume2
- Treatment
- Higher planting densitye2
- Outcome
- leaf valuee2
- Direction
- did not increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Higher planting density contributed to increasing in tobacco leaf yield,but leaf value did not increase correspondingly”
Claim · model-written summary
Carbohydrate contents in tobacco leaf increased as plant density declined
- Taxon
- tobaccoNicotiana tabacume4
- Treatment
- plant density declinede4
- Outcome
- carbohydrates(total sugar,reducing sugar and starch)e4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“As for chemical components content in tobacco leaf,the content of carbohydrates(total sugar,reducing sugar and starch),ratio of total sugar and nicotine,total nitrogen and nicotine increased as plant density declined”
Claim · model-written summary
Ratio of total sugar to nicotine and total nitrogen and nicotine increased as plant density declined
- Taxon
- tobaccoNicotiana tabacume4
- Treatment
- plant density declinede4
- Outcome
- ratio of total sugar and nicotine,total nitrogen and nicotinee4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“As for chemical components content in tobacco leaf,the content of carbohydrates(total sugar,reducing sugar and starch),ratio of total sugar and nicotine,total nitrogen and nicotine increased as plant density declined”
Claim · model-written summary
Differences in contents between total sugar and reducing sugar, total nitrogen and nicotine decreased as plant density declined
- Taxon
- tobaccoNicotiana tabacume4
- Treatment
- plant density declinede5
- Outcome
- difference in contents between total sugar and reducing sugar,total nitrogen,nicotinee5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“As for chemical components content in tobacco leaf,the content of carbohydrates(total sugar,reducing sugar and starch),ratio of total sugar and nicotine,total nitrogen and nicotine increased as plant density declined”
e5“The difference in contents between total sugar and reducing sugar,total nitrogen,nicotine,petroleum ether extraction,volatile acid and volatile bases decreased as plant density declined”
Claim · model-written summary
Petroleum ether extraction, volatile acid and volatile bases decreased as plant density declined
- Taxon
- tobaccoNicotiana tabacume4
- Treatment
- plant density declinede5
- Outcome
- petroleum ether extraction,volatile acid and volatile basese5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“As for chemical components content in tobacco leaf,the content of carbohydrates(total sugar,reducing sugar and starch),ratio of total sugar and nicotine,total nitrogen and nicotine increased as plant density declined”
e5“The difference in contents between total sugar and reducing sugar,total nitrogen,nicotine,petroleum ether extraction,volatile acid and volatile bases decreased as plant density declined”
Claim · model-written summary
The changing rule of polyphenols and K contents with plant density was not obvious
- Taxon
- tobaccoNicotiana tabacume4
- Treatment
- plant densitye6
- Outcome
- changing rule of polyphenols and K contentse6
- Direction
- not unobviouse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“As for chemical components content in tobacco leaf,the content of carbohydrates(total sugar,reducing sugar and starch),ratio of total sugar and nicotine,total nitrogen and nicotine increased as plant density declined”
e6“The changing rule of polyphenols and K contents with plant density was not unobvious”
Claim · model-written summary
The authors recommend a planting density of 120 cm×55-60 cm for KRK26 tobacco in the Yuxi area
- Taxon
- tobaccoNicotiana tabacume4
- Material
- KRK26e7
- Outcome
- planting densitye7
- Value
- 120 cm×55-60 cme7
- Setting
- Yuxi areae7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“As for chemical components content in tobacco leaf,the content of carbohydrates(total sugar,reducing sugar and starch),ratio of total sugar and nicotine,total nitrogen and nicotine increased as plant density declined”
e7“the planting density for KRK26 in Yuxi area should be controlled in the range from 120 cm×55-60 cm”
The same questions in other papers
density · quality: phytochemicals · Nicotiana tabacum (tobacco)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
1 paper more in this group
See all 5 papers →density · yield · Nicotiana tabacum (tobacco)Positive and negative results
19 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
18 papers more in this group
See all 22 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.