Abstract
This study was conducted to evaluate effects of higher conductivity of nutrient solution created by nitrate or chloride salts of potassium and calcium on growth characteristics of pepper plants (Capsicum annuum var annuum) during four months of growth period. Two EC5 and EC8 dS/m of Hoagland nutrient solution were prepared using various salt combinations, namely; KCl + CaCl2, KNO3 + CaNO3, and KNO3 + CaNO3 + NaCl. Hoagland nutrient solution with EC 1.8 dS/m was served as control. Higher conductivity treatments had different effects on pepper plant growth. The most significant reduction in growth parameters of plant height, shoot fresh weight, fruit yield and nutrients uptake were in plants treated with KCl + CaCl2 particularly at EC8. Application of KNO3 + CaNO3 particularly at EC5 showed no difference with control regarding many growth parameters. Application of KNO3 + CaNO3 at EC5 resulted in higher shoot fresh weight compared to control. All salinity treatments except KNO3 + CaNO3 at EC5 reduced fruit yield compared to control. Treatments of KCl + CaCl2 and KNO3 + CaNO3 + NaCl particularly at EC8 of nutrient solution resulted in higher leaf proline concentration, catalase and peroxidase enzymes activity compared to control. Other conductivity treatments showed no difference in catalase or peroxidase enzymes activity. The significant lowest amount of leaf N, K, Mg and Ca was in KCl + CaCl2 at EC8. On the other hand, the highest leaf macronutrient concentrations were in KNO3 + CaNO3 at EC5 and/or EC8 that showed only higher leaf N and Ca values compared to control. Leaf micronutrient concentrations were highest in KNO3 + CaNO3 at EC5 that generally showed no difference with control plants. However, application of KCl + CaCl2 particularly at EC8 and to less extent KNO3 + CaNO3 + NaCl at EC8 reduced leaf micronutrient concentrations. Application of KNO3 + CaNO3 at EC5 increased and KCl + CaCl2 or KNO3 + CaNO3 + NaCl at EC8 decreased the leaf Fe concentration compared to control plants.
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Claims 16
Claim · model-written summary
KCl + CaCl2 at EC8 caused the most significant reduction in plant height, shoot fresh weight and fruit yield of pepper.
- Taxon
- Capsicum annuum
Capsicum annuume0 - Treatment
- KCl + CaCl2 particularly at EC8e2
- Outcome
- plant height, shoot fresh weight, fruit yielde2
- Direction
- reductione2
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“Hoagland nutrient solution with EC 1.8 dS/m was served as control”
e2“The most significant reduction in growth parameters of plant height, shoot fresh weight, fruit yield and nutrients uptake were in plants treated with KCl + CaCl2 particularly at EC8”
Claim · model-written summary
KCl + CaCl2 at EC8 caused the most significant reduction in nutrient uptake of pepper.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KCl + CaCl2 particularly at EC8e2
- Outcome
- nutrients uptakee2
- Direction
- reductione2
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“Hoagland nutrient solution with EC 1.8 dS/m was served as control”
e2“The most significant reduction in growth parameters of plant height, shoot fresh weight, fruit yield and nutrients uptake were in plants treated with KCl + CaCl2 particularly at EC8”
Claim · model-written summary
KNO3 + CaNO3 at EC5 showed no difference from control in many growth parameters of pepper.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KNO3 + CaNO3 particularly at EC5e3
- Outcome
- growth parameterse3
- Direction
- no differencee3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e3“Application of KNO3 + CaNO3 particularly at EC5 showed no difference with control regarding many growth parameters”
Claim · model-written summary
KNO3 + CaNO3 at EC5 resulted in higher shoot fresh weight than control.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KNO3 + CaNO3 at EC5e4
- Outcome
- shoot fresh weighte4
- Direction
- highere4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e4“Application of KNO3 + CaNO3 at EC5 resulted in higher shoot fresh weight compared to control”
Claim · model-written summary
All salinity treatments except KNO3 + CaNO3 at EC5 reduced fruit yield compared to control.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- salinity treatments except KNO3 + CaNO3 at EC5e5
- Outcome
- fruit yielde5
- Direction
- reducede5
- Comparator
- controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e5“All salinity treatments except KNO3 + CaNO3 at EC5 reduced fruit yield compared to control”
Claim · model-written summary
KCl + CaCl2 at EC8 increased leaf proline concentration, catalase and peroxidase activity compared to control.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KCl + CaCl2e6
- Outcome
- leaf proline concentration, catalase and peroxidase enzymes activitye6
- Direction
- highere6
- Qualifier
- particularly at EC8e6
- Comparator
- controle6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e6“Treatments of KCl + CaCl2 and KNO3 + CaNO3 + NaCl particularly at EC8 of nutrient solution resulted in higher leaf proline concentration, catalase and peroxidase enzymes activity compared to control”
Claim · model-written summary
KNO3 + CaNO3 + NaCl at EC8 increased leaf proline concentration, catalase and peroxidase activity compared to control.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KNO3 + CaNO3 + NaCle6
- Outcome
- leaf proline concentration, catalase and peroxidase enzymes activitye6
- Direction
- highere6
- Qualifier
- particularly at EC8e6
- Comparator
- controle6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e6“Treatments of KCl + CaCl2 and KNO3 + CaNO3 + NaCl particularly at EC8 of nutrient solution resulted in higher leaf proline concentration, catalase and peroxidase enzymes activity compared to control”
Claim · model-written summary
Other conductivity treatments showed no difference in catalase or peroxidase enzyme activity.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- Other conductivity treatmentse7
- Outcome
- catalase or peroxidase enzymes activitye7
- Direction
- no differencee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e7“Other conductivity treatments showed no difference in catalase or peroxidase enzymes activity”
Claim · model-written summary
KCl + CaCl2 at EC8 gave the significant lowest leaf N, K, Mg and Ca concentrations of pepper.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KCl + CaCl2 at EC8e1
- Outcome
- leaf N, K, Mg and Cae1
- Direction
- loweste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“The significant lowest amount of leaf N, K, Mg and Ca was in KCl + CaCl2 at EC8”
Claim · model-written summary
KNO3 + CaNO3 at EC5 and/or EC8 showed higher leaf N and Ca values than control.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KNO3 + CaNO3 at EC5 and/or EC8e1
- Outcome
- leaf N and Ca valuese1
- Direction
- highere1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“the highest leaf macronutrient concentrations were in KNO3 + CaNO3 at EC5 and/or EC8 that showed only higher leaf N and Ca values compared to control”
Claim · model-written summary
KNO3 + CaNO3 at EC5 showed no difference from control in leaf micronutrient concentrations.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KNO3 + CaNO3 at EC5e1
- Outcome
- Leaf micronutrient concentrationse1
- Direction
- no differencee1
- Comparator
- control plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“Leaf micronutrient concentrations were highest in KNO3 + CaNO3 at EC5 that generally showed no difference with control plants”
Claim · model-written summary
KCl + CaCl2 particularly at EC8 reduced leaf micronutrient concentrations of pepper.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KCl + CaCl2 particularly at EC8e1
- Outcome
- leaf micronutrient concentrationse1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“application of KCl + CaCl2 particularly at EC8 and to less extent KNO3 + CaNO3 + NaCl at EC8 reduced leaf micronutrient concentrations”
Claim · model-written summary
KNO3 + CaNO3 + NaCl at EC8 reduced leaf micronutrient concentrations of pepper, to a lesser extent than KCl + CaCl2.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KNO3 + CaNO3 + NaCl at EC8e1
- Outcome
- leaf micronutrient concentrationse1
- Direction
- reducede1
- Qualifier
- to less extente1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“application of KCl + CaCl2 particularly at EC8 and to less extent KNO3 + CaNO3 + NaCl at EC8 reduced leaf micronutrient concentrations”
Claim · model-written summary
KNO3 + CaNO3 at EC5 increased leaf Fe concentration compared to control plants.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KNO3 + CaNO3 at EC5e1
- Outcome
- leaf Fe concentratione1
- Direction
- increasede1
- Comparator
- control plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“Application of KNO3 + CaNO3 at EC5 increased and KCl + CaCl2 or KNO3 + CaNO3 + NaCl at EC8 decreased the leaf Fe concentration compared to control plants”
Claim · model-written summary
KCl + CaCl2 at EC8 decreased leaf Fe concentration compared to control plants.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KCl + CaCl2e1
- Outcome
- leaf Fe concentratione1
- Direction
- decreasede1
- Qualifier
- at EC8e1
- Comparator
- control plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“Application of KNO3 + CaNO3 at EC5 increased and KCl + CaCl2 or KNO3 + CaNO3 + NaCl at EC8 decreased the leaf Fe concentration compared to control plants”
Claim · model-written summary
KNO3 + CaNO3 + NaCl at EC8 decreased leaf Fe concentration compared to control plants.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- KNO3 + CaNO3 + NaCle1
- Outcome
- leaf Fe concentratione1
- Direction
- decreasede1
- Qualifier
- at EC8e1
- Comparator
- control plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth characteristics of pepper plants (Capsicum annuum var annuum)”
e1“Application of KNO3 + CaNO3 at EC5 increased and KCl + CaCl2 or KNO3 + CaNO3 + NaCl at EC8 decreased the leaf Fe concentration compared to control plants”
The same questions in other papers
calcium chloride dihydrate · yield · Capsicum annuum (sweet pepper)Positive and negative results
1 in the opposite direction
- positive
calcium chloride dihydrate · nutrient: content · Capsicum annuum (sweet pepper)Positive and negative results
1 in the opposite direction
- positive
potassium nitrate · yield · Capsicum annuum (sweet pepper)Positive and negative results
1 in the opposite direction
- positive
potassium nitrate · nutrient: content · Capsicum annuum (sweet pepper)Positive and negative results
2 in the opposite direction
- positive
- positive
potassium nitrate · growth · Capsicum annuum (sweet pepper)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.