Abstract
Abstract Eggplant (Solanum melongena L.) grown under winter conditions in unheated polyethylene covered greenhouse displays unmarketable red color fruit skin. The purpose of this work was to study the effect of potassium (K), phosphate and total salinity levels in the irrigation solution on the quality of eggplant fruit grown at winter and spring seasons. Eggplant was grown in containers filled with basalt erupted tuff scoria. The fertigation solutions were composed of three levels of P: 18, 36, and 54 g P m‐3, using mono K phosphate (MKP). Each level of P was applied on two levels of total K concentrations, 475 and 920 g K m‐3 composed of K nitrate, MKP, and K chloride (KCl). The KNO3 fertilizer was used in all treatments at 150 g N m‐3. Increasing the KCl concentration increased the average electrical conductivity (EC) in the irrigation solution from 2.3 to 3.9 dS m‐1, reduced class A fruit number and weight, but had no effect on the skin color. During the cold winter period the intensity of the skin color was weaker than in the normal hot growing period. Increasing the average phosphorus (P) concentration in the irrigation solution throughout the growing season from 36 to 54 g m‐3 increased the number of fruit per plant, the number of class A fruits but has no significant effect on total fruit yield. Increasing the total electrical conductivity of the nutrient solutions by K fertilizers above 3.8 dS m‐1 decreased fruit yield and total dry matter in the spring growth period.
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Claims 11
Claim · model-written summary
Winter greenhouse eggplant displayed unmarketable red fruit skin.
- Taxon
- Eggplant
Solanum melongenae0 - Outcome
- unmarketable red color fruit skine0
- Qualifier
- winter conditionse0
- Setting
- unheated polyethylene covered greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eggplant (Solanum melongena L.) grown under winter conditions in unheated polyethylene covered greenhouse displays unmarketable red color fruit skin”
Claim · model-written summary
Increasing KCl raised irrigation solution EC from 2.3 to 3.9 dS m‐1.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- Increasing the KCl concentratione0
- Outcome
- average electrical conductivity (EC) in the irrigation solutione0
- Direction
- increasede0
- Value
- 2.3 to 3.9 dS m‐1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the KCl concentration increased the average electrical conductivity (EC) in the irrigation solution from 2.3 to 3.9 dS m‐1”
t0“Eggplant”
Claim · model-written summary
Increasing KCl reduced class A fruit number.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- Increasing the KCl concentratione0
- Outcome
- class A fruit numbere0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the KCl concentration increased the average electrical conductivity (EC) in the irrigation solution from 2.3 to 3.9 dS m‐1, reduced class A fruit number and weight, but had no effect on the skin color”
t0“Eggplant”
Claim · model-written summary
Increasing KCl reduced class A fruit weight.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- Increasing the KCl concentratione0
- Outcome
- weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the KCl concentration increased the average electrical conductivity (EC) in the irrigation solution from 2.3 to 3.9 dS m‐1, reduced class A fruit number and weight, but had no effect on the skin color”
t0“Eggplant”
Claim · model-written summary
Increasing KCl had no effect on fruit skin color.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- Increasing the KCl concentratione0
- Outcome
- skin colore0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the KCl concentration increased the average electrical conductivity (EC) in the irrigation solution from 2.3 to 3.9 dS m‐1, reduced class A fruit number and weight, but had no effect on the skin color”
t0“Eggplant”
Claim · model-written summary
Fruit skin color was weaker in the cold winter period than in the normal hot growing period.
- Taxon
- EggplantSolanum melongenat0
- Outcome
- intensity of the skin colore0
- Direction
- weakere0
- Comparator
- normal hot growing periode0
- Setting
- cold winter periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the cold winter period the intensity of the skin color was weaker than in the normal hot growing period”
t0“Eggplant”
Claim · model-written summary
Increasing P from 36 to 54 g m‐3 increased fruit number per plant.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- Increasing the average phosphorus (P) concentration in the irrigation solution throughout the growing season from 36 to 54 g m‐3e0
- Outcome
- number of fruit per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the average phosphorus (P) concentration in the irrigation solution throughout the growing season from 36 to 54 g m‐3 increased the number of fruit per plant, the number of class A fruits but has no significant effect on total fruit yield”
t0“Eggplant”
Claim · model-written summary
Increasing P from 36 to 54 g m‐3 increased class A fruit number.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- Increasing the average phosphorus (P) concentration in the irrigation solution throughout the growing season from 36 to 54 g m‐3e0
- Outcome
- number of class A fruitse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the average phosphorus (P) concentration in the irrigation solution throughout the growing season from 36 to 54 g m‐3 increased the number of fruit per plant, the number of class A fruits but has no significant effect on total fruit yield”
t0“Eggplant”
Claim · model-written summary
Increasing P from 36 to 54 g m‐3 had no significant effect on total fruit yield.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- Increasing the average phosphorus (P) concentration in the irrigation solution throughout the growing season from 36 to 54 g m‐3e0
- Outcome
- total fruit yielde0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the average phosphorus (P) concentration in the irrigation solution throughout the growing season from 36 to 54 g m‐3 increased the number of fruit per plant, the number of class A fruits but has no significant effect on total fruit yield”
t0“Eggplant”
Claim · model-written summary
K fertilizer EC above 3.8 dS m‐1 decreased spring fruit yield.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- K fertilizers above 3.8 dS m‐1e0
- Outcome
- fruit yielde0
- Direction
- decreasede0
- Qualifier
- spring growth periode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the total electrical conductivity of the nutrient solutions by K fertilizers above 3.8 dS m‐1 decreased fruit yield and total dry matter in the spring growth period”
t0“Eggplant”
Claim · model-written summary
K fertilizer EC above 3.8 dS m‐1 decreased spring total dry matter.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- K fertilizers above 3.8 dS m‐1e0
- Outcome
- total dry mattere0
- Direction
- decreasede0
- Qualifier
- spring growth periode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the total electrical conductivity of the nutrient solutions by K fertilizers above 3.8 dS m‐1 decreased fruit yield and total dry matter in the spring growth period”
t0“Eggplant”
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8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.