Abstract
In the trial the effect of nitrogen deficiency and potassium surplus on the dry weight, photosynthetic activity (A), transpiration (E), stomatal conductance (gs) and water use efficiency (WUE) were examined. The macroelement content of aboveground parts were analysed, too. The plants were grown in pots filled by pure Sphagnum peat. The top-dressing started in the 3-leave stage of plants, with different solution (every irrigation): control treatment: 0.28 g N, 0.097 g P (0.22 g P2O5), 0.42 g K (0.50 g K2O) per litre; nitrogen-deficiency: 0.097 g P (0.22 g P2O5), 0.42 g K (0.50 g K2O) per litre; potassium surplus: 0.28 g N, 0.097 g P (0.22 g P2O5), 0.83 g K (1.0 g K2O) per litre. The transplants grown in the commercial fertilization technology (control treatment) almost in every evaluated parameters shown average value. The potassium surplus resulted significantly higher transpiration activity (2.58 mmol H2O. m-2 . s-1) and photosynthetic activity (11.54 μmol CO2. m-2 . s-1) than the nitrogen deficiency (E: 1.91 mmol H2O. m-2 . s-1 and A: 9.01 μmol CO2. m-2 . s-1), but without significant differences with control treatment. The N, P and K content of aboveground parts was significantly lower in the nitrogen deficiency treatment, than in the case of the potassium surplus, too. The effect of treatments on the dry weight of the plants, the stomatal conductance and the water use efficiency was not proven statistically.
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Claims 9
Claim · model-written summary
Potassium surplus raised transpiration activity relative to nitrogen deficiency, with no significant difference from control.
- Taxon
- Sweet Pepper
Capsicum annuumt0 - Treatment
- potassium surpluse0
- Outcome
- transpiration activitye0
- Direction
- highere0
- Value
- 2.58 mmol H2O. m-2 . s-1e0
- Qualifier
- 1.91 mmol H2O. m-2 . s-1e0
- Comparator
- nitrogen deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants”
e0“The potassium surplus resulted significantly higher transpiration activity (2.58 mmol H2O. m-2 . s-1) and photosynthetic activity (11.54 μmol CO2. m-2 . s-1) than the nitrogen deficiency (E: 1.91 mmol H2O. m-2 . s-1 and A: 9.01 μmol CO2. m-2 . s-1), but without significant differences with control treatment.”
Claim · model-written summary
Potassium surplus raised photosynthetic activity relative to nitrogen deficiency, with no significant difference from control.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- potassium surpluse0
- Outcome
- photosynthetic activitye0
- Direction
- highere0
- Value
- 11.54 μmol CO2. m-2 . s-1e0
- Qualifier
- 9.01 μmol CO2. m-2 . s-1e0
- Comparator
- nitrogen deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants”
e0“The potassium surplus resulted significantly higher transpiration activity (2.58 mmol H2O. m-2 . s-1) and photosynthetic activity (11.54 μmol CO2. m-2 . s-1) than the nitrogen deficiency (E: 1.91 mmol H2O. m-2 . s-1 and A: 9.01 μmol CO2. m-2 . s-1), but without significant differences with control treatment.”
Claim · model-written summary
Control transplants showed average values for almost all evaluated parameters.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- commercial fertilization technologye0
- Outcome
- average valuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants”
e0“The transplants grown in the commercial fertilization technology (control treatment) almost in every evaluated parameters shown average value.”
Claim · model-written summary
N content of aboveground parts was lower with nitrogen deficiency than potassium surplus.
- Taxon
- Sweet PepperCapsicum annuumt0
- Organ / stage
- aboveground partse0
- Treatment
- nitrogen deficiency treatmente0
- Outcome
- Ne0
- Direction
- lowere0
- Comparator
- potassium surpluse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants”
e0“The N, P and K content of aboveground parts was significantly lower in the nitrogen deficiency treatment, than in the case of the potassium surplus, too.”
Claim · model-written summary
P content of aboveground parts was lower with nitrogen deficiency than potassium surplus.
- Taxon
- Sweet PepperCapsicum annuumt0
- Organ / stage
- aboveground partse0
- Treatment
- nitrogen deficiency treatmente0
- Outcome
- Pe0
- Direction
- lowere0
- Comparator
- potassium surpluse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants”
e0“The N, P and K content of aboveground parts was significantly lower in the nitrogen deficiency treatment, than in the case of the potassium surplus, too.”
Claim · model-written summary
K content of aboveground parts was lower with nitrogen deficiency than potassium surplus.
- Taxon
- Sweet PepperCapsicum annuumt0
- Organ / stage
- aboveground partse0
- Treatment
- nitrogen deficiency treatmente0
- Outcome
- Ke0
- Direction
- lowere0
- Comparator
- potassium surpluse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants”
e0“The N, P and K content of aboveground parts was significantly lower in the nitrogen deficiency treatment, than in the case of the potassium surplus, too.”
Claim · model-written summary
The treatment effect on dry weight was not statistically proven.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- treatmentse0
- Outcome
- dry weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants”
e0“The effect of treatments on the dry weight of the plants, the stomatal conductance and the water use efficiency was not proven statistically.”
Claim · model-written summary
The treatment effect on stomatal conductance was not statistically proven.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- treatmentse0
- Outcome
- stomatal conductancee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants”
e0“The effect of treatments on the dry weight of the plants, the stomatal conductance and the water use efficiency was not proven statistically.”
Claim · model-written summary
The treatment effect on water use efficiency was not statistically proven.
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- treatmentse0
- Outcome
- water use efficiencye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants”
e0“The effect of treatments on the dry weight of the plants, the stomatal conductance and the water use efficiency was not proven statistically.”
The same questions in other papers
nitrogen · nutrient: content · Capsicum annuum (sweet pepper)Positive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- negative
- positive
8 papers more in this group
See all 12 papers →potassium · physiology: photosynthesis · Capsicum annuum (sweet pepper)Results agree
2 papers in the same direction as this paper
- positive
- 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.