Abstract
The global production of olives ( Olea europaea L.) has increased rapidly over the last decade as a result of the expansion of orchards with high tree densities. Most olives are propagated from rooted cuttings. The present study evaluated the propagation rate of rooted cuttings as a function of the nutritional status of the stock trees. Rooting ability was evaluated for cuttings taken from container-grown stock plants exposed to eight concentrations of nitrogen (N) (ranging from 0.4 to 14.1 m m ), seven concentrations of phosphorus (P) (ranging from 0.01 to 0.62 m m ), and five concentrations of potassium (K) (ranging from 0.25 to 5.33 m m ). Increases in N level negatively affected rooting rate and cutting survival. Propagation success was increased threefold as N in irrigation water was reduced from the highest to the lowest treatments. Enhanced root development under low N concentrations resulted in higher root weight compared with the high N concentrations. The high concentration of N fertilization negatively affected the propagation rate but was not reflected in N concentration of diagnostic leaves. There was, however, a significant negative correlation between N in twigs and propagation rate. Regarding response to K concentration, no effect was found on rooting rate or cutting survival. Except for reduced rooting at the lowest concentration, P had a negligible effect on rooting rate. The experimental results indicate the need to avoid overfertilization of olive stock trees with N to promote successful propagation.
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Claims 9
Claim · model-written summary
Increases in nitrogen level negatively affected rooting rate and cutting survival of olive cuttings.
- Taxon
- Olea europaea L.
Olea europaeae1 - Treatment
- Increases in N levele0
- Outcome
- rooting rate and cutting survivale0
- Direction
- negatively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases in N level negatively affected rooting rate and cutting survival”
e1“Olea europaea L.”
Claim · model-written summary
Propagation success of olive increased threefold when N in irrigation water was reduced from the highest to the lowest treatment.
- Taxon
- Olea europaea L.Olea europaeae1
- Treatment
- N in irrigation water was reduced from the highest to the lowest treatmentse0
- Outcome
- Propagation successe0
- Direction
- increasede0
- Value
- threefolde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Propagation success was increased threefold as N in irrigation water was reduced from the highest to the lowest treatments”
e1“Olea europaea L.”
Claim · model-written summary
Enhanced root development under low N concentrations resulted in higher root weight than under high N concentrations.
- Taxon
- Olea europaea L.Olea europaeae1
- Treatment
- low N concentrationse0
- Outcome
- root weighte0
- Direction
- highere0
- Comparator
- the high N concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced root development under low N concentrations resulted in higher root weight compared with the high N concentrations”
e1“Olea europaea L.”
Claim · model-written summary
The negative effect of high N fertilization on propagation rate was not reflected in the N concentration of diagnostic leaves.
- Taxon
- Olea europaea L.Olea europaeae1
- Organ / stage
- diagnostic leavese0
- Treatment
- high concentration of N fertilizatione0
- Outcome
- N concentration of diagnostic leavese0
- Direction
- not reflectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high concentration of N fertilization negatively affected the propagation rate but was not reflected in N concentration of diagnostic leaves”
e1“Olea europaea L.”
Claim · model-written summary
There was a significant negative correlation between N in olive twigs and propagation rate.
- Taxon
- Olea europaea L.Olea europaeae1
- Organ / stage
- twigse0
- Compound
- Ne0
- Outcome
- propagation ratee0
- Direction
- negative correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant negative correlation between N in twigs and propagation rate”
e1“Olea europaea L.”
Claim · model-written summary
K concentration had no effect on rooting rate or cutting survival of olive.
- Taxon
- Olea europaea L.Olea europaeae1
- Treatment
- K concentratione0
- Outcome
- rooting rate or cutting survivale0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regarding response to K concentration, no effect was found on rooting rate or cutting survival”
e1“Olea europaea L.”
Claim · model-written summary
Except at the lowest concentration, P had a negligible effect on rooting rate of olive cuttings.
- Taxon
- Olea europaea L.Olea europaeae1
- Treatment
- Pe0
- Outcome
- rooting ratee0
- Direction
- negligible effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except for reduced rooting at the lowest concentration, P had a negligible effect on rooting rate”
e1“Olea europaea L.”
Claim · model-written summary
Rooting was reduced at the lowest P concentration.
- Taxon
- Olea europaea L.Olea europaeae1
- Treatment
- lowest concentratione0
- Outcome
- rootinge0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except for reduced rooting at the lowest concentration, P had a negligible effect on rooting rate”
e1“Olea europaea L.”
Claim · model-written summary
The authors conclude that overfertilization of olive stock trees with N should be avoided to promote successful propagation.
Verbatim
e0“the need to avoid overfertilization of olive stock trees with N to promote successful propagation”
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See all 35 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.