Abstract
Optimal potassium nutrition is essential to maximize olive tree production. In Tunisia, olive trees are mainly conducted under rainfed conditions and subjected to water and nutrient deficits. An experiment was established in semi arid region to study the response of olive tree to potassium mineral nutrition using potassium sulphate in reference to Control. Potassium was supplied by foliar spray and soil spreading at two levels. Foliar treatments were 50 and 100% of tree requirement. For soil spreading, 100% and 200% of the tree needs were applied. After five of experiment, yield was significantly higher for 100% foliar spray than the control. Leaf mineral analysis revealed a significant increase of K foliar content in response to K supply. Foliar nutrition at 100% of tree needs improved the cumulative yield and olive quality. An increase of average fruit weight, pit ratio was observed for foliar spray treatment. However, oil quality seems to be unaffected with insignificant differences of poly phenols content and fatty acid composition.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Foliar potassium at 100% of tree need significantly raised olive yield over the control.
- Taxon
- olive trees
Olea europaeat0 - Treatment
- 100% foliar spraye0
- Outcome
- yielde0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield was significantly higher for 100% foliar spray than the control”
t0“olive trees”
Claim · model-written summary
Potassium supply significantly increased leaf potassium content.
- Taxon
- olive treesOlea europaeat0
- Treatment
- K supplye0
- Outcome
- K foliar contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant increase of K foliar content in response to K supply”
t0“olive trees”
Claim · model-written summary
Foliar nutrition at 100% of tree needs improved cumulative olive yield and quality.
- Taxon
- olive treesOlea europaeat0
- Treatment
- Foliar nutrition at 100% of tree needse0
- Outcome
- cumulative yield and olive qualitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar nutrition at 100% of tree needs improved the cumulative yield and olive quality.”
t0“olive trees”
Claim · model-written summary
Foliar spray increased average olive fruit weight and pit ratio.
- Taxon
- olive treesOlea europaeat0
- Treatment
- foliar spray treatmente0
- Outcome
- average fruit weight, pit ratioe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase of average fruit weight, pit ratio was observed for foliar spray treatment.”
t0“olive trees”
Claim · model-written summary
Oil polyphenol content and fatty acid composition did not differ significantly under potassium treatment.
- Taxon
- olive treesOlea europaeat0
- Treatment
- K supplye1
- Outcome
- poly phenols content and fatty acid compositione0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oil quality seems to be unaffected with insignificant differences of poly phenols content and fatty acid composition.”
t0“olive trees”
e1“Leaf mineral analysis revealed a significant increase of K foliar content in response to K supply.”
The same questions in other papers
potassium · quality: oil · Olea europaea (common olive)Positive and negative results
2 in the opposite direction
- positive
- positive
application · yield · Olea europaea (common olive)Positive and negative results
34 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
32 papers more in this group
See all 36 papers →potassium · molecular: metabolites · Olea europaea (common olive)Results agree
1 paper in the same direction as this paper
- 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.