Abstract
This research studied the effect of waterlogging level and duration, nitrogen fertilizer and terminal drought stress on root and shoot growth of Stevia. Treatments included four waterlogging levels; (0, -5, -10 cm from soil surface and with normal irrigation as control), in periods of 2 and 4 days of waterlogging, two levels of nitrogen (6‰ and 0) from source of urea and two levels of terminal drought stress. Results showed measured root and shoot traits include root dry weight, root length, root area, root volume, root length density, root surface area density, dry root mass density, root diameter, leaf area, plant height, number of SPAD, number of lateral shoot, number of leaves were significantly different among treatments. Root dry weight, root length and root volume in -10 waterlogging level treatment( 16.24 g, 24.8 cm and 27.7 ml, respectively) and in fertilizer treatment (17.9 g, 25.5 cm and 22.1 ml, respectively) shown the least decrease. Moreover, interaction between drought stress treatment and nitrogen fertilizer for root dry weight and root length (18.4 g and 26.5 cm, respectively)and in shoot traits, number of leaves, leaf area and plant height (237, 64.07 cm 2 and 87 cm) showed the minimum difference with control treatments. Generally, the results of this experiment showed that increase of waterlogging either level or duration decrease the amount of root and shoot characteristics. Nitrogen fertilizer resulted in higher root and shoot traits in applying treatment. By contrast, terminal drought stress led to decrease in all root and shoot traits.
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Claims 15
Claim · model-written summary
Root and shoot traits differed significantly among treatments.
SteviaNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root and shoot traits include root dry weight, root length, root area, root volume, root length density, root surface area density, dry root mass density, root diameter, leaf area, plant height, number of SPAD, number of lateral shoot, number of leaves were significantly different among treatments”
e1“root and shoot growth of Stevia”
Claim · model-written summary
At the -10 waterlogging level, root dry weight had the least decrease and was 16.24 g.
- Treatment
- -10 waterlogging level treatmente0
- Outcome
- Root dry weighte0
- Direction
- least decreasee0
- Value
- 16.24 ge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root dry weight, root length and root volume in -10 waterlogging level treatment( 16.24 g, 24.8 cm and 27.7 ml, respectively) and in fertilizer treatment (17.9 g, 25.5 cm and 22.1 ml, respectively) shown the least decrease”
e1“root and shoot growth of Stevia”
Claim · model-written summary
At the -10 waterlogging level, root length had the least decrease and was 24.8 cm.
- Treatment
- -10 waterlogging level treatmente0
- Outcome
- root lengthe0
- Direction
- least decreasee0
- Value
- 24.8 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root dry weight, root length and root volume in -10 waterlogging level treatment( 16.24 g, 24.8 cm and 27.7 ml, respectively) and in fertilizer treatment (17.9 g, 25.5 cm and 22.1 ml, respectively) shown the least decrease”
e1“root and shoot growth of Stevia”
Claim · model-written summary
At the -10 waterlogging level, root volume had the least decrease and was 27.7 ml.
- Treatment
- -10 waterlogging level treatmente0
- Outcome
- root volumee0
- Direction
- least decreasee0
- Value
- 27.7 mle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root dry weight, root length and root volume in -10 waterlogging level treatment( 16.24 g, 24.8 cm and 27.7 ml, respectively) and in fertilizer treatment (17.9 g, 25.5 cm and 22.1 ml, respectively) shown the least decrease”
e1“root and shoot growth of Stevia”
Claim · model-written summary
With fertilizer, root dry weight had the least decrease and was 17.9 g.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root dry weight, root length and root volume in -10 waterlogging level treatment( 16.24 g, 24.8 cm and 27.7 ml, respectively) and in fertilizer treatment (17.9 g, 25.5 cm and 22.1 ml, respectively) shown the least decrease”
e1“root and shoot growth of Stevia”
Claim · model-written summary
With fertilizer, root length had the least decrease and was 25.5 cm.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root dry weight, root length and root volume in -10 waterlogging level treatment( 16.24 g, 24.8 cm and 27.7 ml, respectively) and in fertilizer treatment (17.9 g, 25.5 cm and 22.1 ml, respectively) shown the least decrease”
e1“root and shoot growth of Stevia”
Claim · model-written summary
With fertilizer, root volume had the least decrease and was 22.1 ml.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root dry weight, root length and root volume in -10 waterlogging level treatment( 16.24 g, 24.8 cm and 27.7 ml, respectively) and in fertilizer treatment (17.9 g, 25.5 cm and 22.1 ml, respectively) shown the least decrease”
e1“root and shoot growth of Stevia”
Claim · model-written summary
Combined drought stress and nitrogen fertilizer gave root dry weight of 18.4 g, with minimum difference from controls.
- Treatment
- drought stress treatment and nitrogen fertilizere0
- Outcome
- root dry weighte0
- Direction
- minimum differencee0
- Value
- 18.4 ge0
- Comparator
- control treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“interaction between drought stress treatment and nitrogen fertilizer for root dry weight and root length (18.4 g and 26.5 cm, respectively)and in shoot traits, number of leaves, leaf area and plant height (237, 64.07 cm 2 and 87 cm) showed the minimum difference with control treatments”
e1“root and shoot growth of Stevia”
Claim · model-written summary
Combined drought stress and nitrogen fertilizer gave root length of 26.5 cm, with minimum difference from controls.
- Treatment
- drought stress treatment and nitrogen fertilizere0
- Outcome
- root lengthe0
- Direction
- minimum differencee0
- Value
- 26.5 cme0
- Comparator
- control treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“interaction between drought stress treatment and nitrogen fertilizer for root dry weight and root length (18.4 g and 26.5 cm, respectively)and in shoot traits, number of leaves, leaf area and plant height (237, 64.07 cm 2 and 87 cm) showed the minimum difference with control treatments”
e1“root and shoot growth of Stevia”
Claim · model-written summary
Combined drought and nitrogen treatment gave 237 leaves, with minimum difference from controls.
- Treatment
- drought stress treatment and nitrogen fertilizere0
- Outcome
- number of leavese0
- Direction
- minimum differencee0
- Value
- 237e0
- Comparator
- control treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“interaction between drought stress treatment and nitrogen fertilizer for root dry weight and root length (18.4 g and 26.5 cm, respectively)and in shoot traits, number of leaves, leaf area and plant height (237, 64.07 cm 2 and 87 cm) showed the minimum difference with control treatments”
e1“root and shoot growth of Stevia”
Claim · model-written summary
Combined drought and nitrogen treatment gave leaf area of 64.07 cm 2, with minimum difference from controls.
- Treatment
- drought stress treatment and nitrogen fertilizere0
- Outcome
- leaf areae0
- Direction
- minimum differencee0
- Value
- 64.07 cm 2e0
- Comparator
- control treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“interaction between drought stress treatment and nitrogen fertilizer for root dry weight and root length (18.4 g and 26.5 cm, respectively)and in shoot traits, number of leaves, leaf area and plant height (237, 64.07 cm 2 and 87 cm) showed the minimum difference with control treatments”
e1“root and shoot growth of Stevia”
Claim · model-written summary
Combined drought and nitrogen treatment gave plant height of 87 cm, with minimum difference from controls.
- Treatment
- drought stress treatment and nitrogen fertilizere0
- Outcome
- plant heighte0
- Direction
- minimum differencee0
- Value
- 87 cme0
- Comparator
- control treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“interaction between drought stress treatment and nitrogen fertilizer for root dry weight and root length (18.4 g and 26.5 cm, respectively)and in shoot traits, number of leaves, leaf area and plant height (237, 64.07 cm 2 and 87 cm) showed the minimum difference with control treatments”
e1“root and shoot growth of Stevia”
Claim · model-written summary
More severe or longer waterlogging decreased root and shoot characteristics.
- Treatment
- waterlogging either level or duratione0
- Outcome
- root and shoot characteristicse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase of waterlogging either level or duration decrease the amount of root and shoot characteristics”
e1“root and shoot growth of Stevia”
Claim · model-written summary
Nitrogen fertilizer increased root and shoot traits.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilizer resulted in higher root and shoot traits in applying treatment”
e1“root and shoot growth of Stevia”
Claim · model-written summary
Terminal drought decreased all root and shoot traits.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“terminal drought stress led to decrease in all root and shoot traits”
e1“root and shoot growth of Stevia”
The same questions in other papers
drought · growth · SteviaPositive and negative results
2 in the opposite direction
- negative
- negative
fertilization · growth · SteviaPositive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
5 papers more in this group
See all 9 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.