Abstract
Abstract A field trial was carried out for 4 years in Kibbutz Lavee, Israel, to study the nitrogen (N), phosphorus (P), and potassium (K) fertigation of the pear (Pyrus communis, cv. Spadona) under drip irrigation, in order to improve yield and fruit size of a 19‐year‐old plantation. Fertigation treatments consisted of a basic N and K rate, applied uniformly to the entire orchard, supplemented with either K alone, K and N or K and P. Supplemented fertilizers were applied under the drippers in 5–6 doses, during April‐May. Potassium and P fertigation raised soil concentration of these two nutrients significantly. Concentration was raised to a greater extent at the 0–30 cm soil layer than at the 30–60 cm layer. The pear was not affected by N or K fertigation, indicating sufficient level of these nutrients. Phosphorus raised leaf P significantly and steadily, fruit P significantly in one year and the yield in the last three years by 30% (p=0.084). Fruit size was not affected by N, P, or K nutrition. The threshold and optimal concentrations values of P in 10‐week‐old mid‐shoot leaves for interpretation of leaf analysis of ‘Spadona’ pear were found to be 0.14% and 0.15%, respectively.
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Claims 9
Claim · model-written summary
Potassium and phosphorus fertigation significantly raised the soil concentration of these two nutrients.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise0 - Treatment
- Potassium and P fertigatione1
- Outcome
- soil concentration of these two nutrientse1
- Direction
- raisede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“the pear (Pyrus communis, cv. Spadona)”
e1“Potassium and P fertigation raised soil concentration of these two nutrients significantly”
Claim · model-written summary
The nutrient concentration rise was greater in the 0-30 cm soil layer than in the 30-60 cm layer.
- Taxon
- pearPyrus communise0
- Outcome
- Concentratione1
- Direction
- raised to a greater extente1
- Qualifier
- 0–30 cm soil layere1
- Comparator
- 30–60 cm layere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pear (Pyrus communis, cv. Spadona)”
e1“Concentration was raised to a greater extent at the 0–30 cm soil layer than at the 30–60 cm layer”
Claim · model-written summary
The pear was not affected by N or K fertigation, indicating sufficient levels of these nutrients.
- Taxon
- pearPyrus communise0
- Treatment
- N or K fertigatione1
- Outcome
- not affectede1
- Direction
- not affectede1
- Qualifier
- sufficient level of these nutrientse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pear (Pyrus communis, cv. Spadona)”
e1“The pear was not affected by N or K fertigation, indicating sufficient level of these nutrients”
Claim · model-written summary
Phosphorus fertigation raised leaf P significantly and steadily.
- Taxon
- pearPyrus communise0
- Treatment
- Phosphoruse1
- Outcome
- leaf Pe1
- Direction
- raisede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pear (Pyrus communis, cv. Spadona)”
e1“Phosphorus raised leaf P significantly and steadily, fruit P significantly in one year and the yield in the last three years by 30% (p=0.084)”
Claim · model-written summary
Phosphorus fertigation raised fruit P significantly in one year.
- Taxon
- pearPyrus communise0
- Treatment
- Phosphoruse1
- Outcome
- fruit Pe1
- Direction
- raisede1
- Qualifier
- in one yeare1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pear (Pyrus communis, cv. Spadona)”
e1“Phosphorus raised leaf P significantly and steadily, fruit P significantly in one year and the yield in the last three years by 30% (p=0.084)”
Claim · model-written summary
Phosphorus fertigation raised the yield in the last three years by 30% (p=0.084).
- Taxon
- pearPyrus communise0
- Treatment
- Phosphoruse1
- Outcome
- yielde1
- Direction
- raisede1
- Value
- 30%e1
- Qualifier
- p=0.084e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pear (Pyrus communis, cv. Spadona)”
e1“Phosphorus raised leaf P significantly and steadily, fruit P significantly in one year and the yield in the last three years by 30% (p=0.084)”
Claim · model-written summary
Fruit size was not affected by N, P, or K nutrition.
- Taxon
- pearPyrus communise0
- Treatment
- N, P, or K nutritione1
- Outcome
- Fruit sizee1
- Direction
- not affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pear (Pyrus communis, cv. Spadona)”
e1“Fruit size was not affected by N, P, or K nutrition”
Claim · model-written summary
The threshold concentration of P in 10-week-old mid-shoot leaves for leaf analysis of Spadona pear was found to be 0.14%.
- Taxon
- pearPyrus communise0
- Outcome
- threshold and optimal concentrations values of Pe1
- Value
- 0.14%e2
- Qualifier
- thresholde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pear (Pyrus communis, cv. Spadona)”
e1“The threshold and optimal concentrations values of P”
e2“were found to be 0.14% and 0.15%, respectively”
Claim · model-written summary
The optimal concentration of P in 10-week-old mid-shoot leaves for leaf analysis of Spadona pear was found to be 0.15%.
- Taxon
- pearPyrus communise0
- Outcome
- threshold and optimal concentrations values of Pe1
- Value
- 0.15%e2
- Qualifier
- optimale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pear (Pyrus communis, cv. Spadona)”
e1“The threshold and optimal concentrations values of P”
e2“were found to be 0.14% and 0.15%, respectively”
The same questions in other papers
phosphorus · yield · Pyrus communis (pear)Positive and negative results
3 in the opposite direction
- no effect
- no effect
- no effect
nitrogen · yield · Pyrus communis (pear)Positive and negative results
4 papers in the same direction as this paper · 8 in the opposite direction
- no effect
- positive
- positive
9 papers more in this group
See all 13 papers →fertilization · nutrient: content · Pyrus communis (pear)Positive and negative results
21 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
19 papers more in this group
See all 23 papers →phosphorus · nutrient: content · Pyrus communis (pear)Results agree
2 papers in the same direction as this paper
- positive
- positive
potassium · nutrient: content · Pyrus communis (pear)Results agree
3 papers in the same direction as this paper
- positive
- 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.