Claim · model-written summary
Potassium fertilization increased leaf potassium compared with vines not receiving potassium
- Treatment
- potassium fertilizatione5
- Outcome
- amount of potassium in leafe5
- Direction
- increasede5
- Comparator
- cases where this element hasn’t been usede5
VitisNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GRAPEVINE FE-CHLOROSIS”
e5“The amount of potassium in leaf was increased by potassium fertilization, compared to the cases where this element hasn’t been used”
Title
GRAPEVINE FE-CHLOROSIS ON PODUNAVLJE VINEGROWING AREA
Mato Drenjančević DOAJ (DOAJ: Directory of Open Access Journals) 2012
Other claims from this paper (16)
- Intervention effect Potassium fertilization significantly increased grapevine yield relative to the control in both years
- Intervention effect Potassium source with FeSO4 supplement did not affect must sugar content in any year
- Intervention effect Fertilization treatments and foliar treatments had no significant effect on must total acidity in any year
- Intervention effect Potassium and iron fertilization sources and foliar treatment did not change leaf phosphorus percentage
- Intervention effect Potassium chloride and sulphate with 25 kg/ha iron in the main fertilization, or without iron, increased leaf iron
- Intervention effect Foliar iron fertilization significantly increased leaf iron in both years, except at flowering in 2009
- Observation No visual Fe-chlorosis symptoms appeared on leaves at either growth stage in any year
- Intervention effect Potassium fertilization sources and iron in the main fertilization or foliar treatment did not change leaf manganese
- Intervention effect Potassium fertilization sources and potassium with iron in the main fertilization did not significantly change leaf zinc
- Intervention effect Foliar treatment had an even smaller effect on leaf zinc change at flowering
- Intervention effect Potassium fertilization slightly changed leaf copper
- Intervention effect Foliar fertilization did not affect leaf copper change in any year
- Association Leaf K/Ca ratio correlated negatively with leaf potassium content
- Association Leaf potassium content correlated very positively with the sum of cations K+Ca+Mg
- Intervention effect The expected effects of the fertilization variants on chlorosis failed
- Observation Fe-chlorosis is a considerable problem in grape and vine production in the Podunavlje subregion