Abstract
ABSTRACT The influence of nitrogen concentration and the ratio of NO3 to NH4 on the marketable yield and fruit quality characteristics of cucumbers (Cucumis sativus L. cv. Palmera) grown on rockwool during spring and winter in southern Greece were studied. Nitrogen (N) was supplied at three N concentrations and four ratios of NO3 to NH4. During the spring, increasing total nitrogen or NH4 concentration within the nutrient solution significantly decreased the mean total yield and fruit size. However, during the winter, the yield and number of fruits per plant were not affected by N concentration, but were reduced by increasing NH4:NO3 ratio. Fruits that were produced under low N concentrations were lighter in color, but only the color of the apical tissues of the fruit was affected by the NH4:NO3 ratio. Flesh firmness of the fruit was not affected by N source or concentration, except for the apical tissue, the firmness of which declined with increasing N concentration. On the basis of the present results, for highest yield and fruit quality during both the spring and winter seasons of southern Greece, 100 ppm N applied solely in the form of NO3 is indicated.
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Claims 9
Claim · model-written summary
In spring, increasing total nitrogen significantly decreased mean total yield.
- Taxon
- cucumbers
Cucumis sativust0 - Treatment
- total nitrogene0
- Outcome
- mean total yielde0
- Direction
- decreasede0
- Setting
- springe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the spring, increasing total nitrogen or NH4 concentration within the nutrient solution significantly decreased the mean total yield and fruit size.”
t0“cucumbers”
Claim · model-written summary
In spring, increasing NH4 concentration significantly decreased fruit size.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- NH4 concentratione0
- Outcome
- fruit sizee0
- Direction
- decreasede0
- Setting
- springe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the spring, increasing total nitrogen or NH4 concentration within the nutrient solution significantly decreased the mean total yield and fruit size.”
t0“cucumbers”
Claim · model-written summary
Winter yield and fruit number were unaffected by nitrogen concentration.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- N concentratione0
- Outcome
- yield and number of fruits per plante0
- Direction
- not affectede0
- Setting
- wintere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during the winter, the yield and number of fruits per plant were not affected by N concentration”
t0“cucumbers”
Claim · model-written summary
Increasing NH4:NO3 ratio reduced winter yield and fruit number.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- increasing NH4:NO3 ratioe0
- Outcome
- yield and number of fruits per plante0
- Direction
- reducede0
- Setting
- wintere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during the winter, the yield and number of fruits per plant were not affected by N concentration, but were reduced by increasing NH4:NO3 ratio”
t0“cucumbers”
Claim · model-written summary
Low nitrogen produced lighter-colored fruits.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- low N concentrationse0
- Outcome
- Fruitse0
- Direction
- lighter in colore0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruits that were produced under low N concentrations were lighter in color”
t0“cucumbers”
Claim · model-written summary
NH4:NO3 ratio affected only apical fruit-tissue color.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- NH4:NO3 ratioe0
- Outcome
- color of the apical tissues of the fruite0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the color of the apical tissues of the fruit was affected by the NH4:NO3 ratio”
t0“cucumbers”
Claim · model-written summary
Nitrogen source or concentration did not affect fruit flesh firmness outside apical tissue.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- N source or concentratione0
- Outcome
- Flesh firmness of the fruite0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flesh firmness of the fruit was not affected by N source or concentration, except for the apical tissue”
t0“cucumbers”
Claim · model-written summary
Apical fruit-tissue firmness declined with increasing nitrogen concentration.
- Taxon
- cucumbersCucumis sativust0
- Organ / stage
- apical tissuee0
- Treatment
- increasing N concentratione0
- Outcome
- firmnesse0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the apical tissue, the firmness of which declined with increasing N concentration”
t0“cucumbers”
Claim · model-written summary
The authors indicate 100 ppm N as nitrate alone for highest yield and fruit quality in spring and winter in southern Greece.
- Taxon
- cucumbersCucumis sativust0
- Outcome
- 100 ppm N applied solely in the form of NO3e0
- Setting
- southern Greecee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for highest yield and fruit quality during both the spring and winter seasons of southern Greece, 100 ppm N applied solely in the form of NO3 is indicated”
t0“cucumbers”
The same questions in other papers
nitrogen · yield · Cucumis sativus (cucumber)Positive and negative results
9 papers in the same direction as this paper · 24 in the opposite direction
- negative
- positive
- positive
30 papers more in this group
See all 34 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.