application · Nutrient: content · Helianthus annuus (common sunflower)

Positive and negative results25 papers: 24 positive, 1 negative or no effect

39 claims from these papers; 3 citations between them.

Papers here report positive and negative or no-effect results. No pair of them has been accepted in the claim-by-claim check.

How these papers cite each other

3 citations between these papers: 2 on the same side, 1 across the two sides.

Positive result
Negative result or no effect
Citation, pointing to the cited paper
Citation across the two sides
Larger circle: more citations overall

Years run left to right. Citations come from the papers’ OpenAlex reference lists. Hover a paper to bring forward its citations; click it to open the paper.

Papers reporting a positive result 24

Effect of Soil and Foliar Application of Nitrogen, Potassium and Molybdenum on Oil Content and Yield and Chemical Composition of Sunflower · 1980
- positive
  Soil application of K and Mo significantly increased total K uptake of sunflower over soil application of K without Mo.
  compared with soil application of K without Mo
- negative
  Foliar application of Mo tended to decrease oil and nitrogen content of sunflower seeds.
- negative
  Foliar application of K along with Mo significantly depressed total N and K uptake of sunflower relative to foliar application of K without Mo.
  compared with foliar application of K without Mo
Effects of Boron Foliar Applications on Vegetative and Reproductive Growth of Sunflower · 2003
- positive
  All foliar B spray rates increased the B concentration in various parts of the plant tops, including parts that developed after spraying.
- no effect
  The B concentration in sunflower roots was not increased by foliar B application.
cited by 1 paper here
Zinc Application Effects on Yield and Seed Oil Content of Sunflower Grown on a Saline Calcareous Soil · 2006
- positive
  Foliar zinc sulfate produced the highest leaf zinc concentration in the first year, 162 mg kg−1.
- positive
  Foliar zinc sulfate produced the highest leaf zinc concentration in the second year, 175 mg kg−1.
cited by 1 paper here
Does exogenous application of salicylic acid improve growth and some key physiological attributes in sunfl ower plants subjected to salt stress? · 2012
- positive
  Foliar-applied SA improved leaf and root Ca2+ concentrations.
Evaluation of Phosphorus and Zinc Concentration in Oil and Confectionary Sunflower Plant Parts in Modified Fertilization · 2014
- positive
  Confectionary sunflower seeds had maximum zinc accumulation of 55 mg/kg with PSB, chemical phosphate and foliar zinc.
Boron Fertilization in Sunflower (Helianthus annuusL.) in an Inceptisol of West Bengal, India · 2015
- positive
  Foliar boron outperformed soil application for boron uptake and use efficiencies.
  compared with soil application of B fertilizers
cites 1 paper here
Effects of foliar spray of two kinds of zinc oxide on the growth and ion concentration of sunflower cultivars under salt stress · 2015
- positive
  Both ZnO forms decreased leaf Na content.
cited by 1 paper here
Supplemental macronutrients and microbial fermentation products improve the uptake and transport of foliar applied zinc in sunflower (Helianthus annuus L.) plants. Studies utilizing micro X-ray florescence · 2015
- positive
  Micro-XRF imaging showed a clear enrichment of Zn in the vascular tissues of sunflower petioles treated with foliar Zn fertilizers.
- no effect
  Total Zn in sunflower petioles was not significantly increased by foliar Zn fertilizer application (ICP-MS).
cites 1 paper here
Foliar application of molybdenum improves nitrogen uptake and yield of sunflower · 2015
- positive
  Mo foliar application increased leaf ammonium, total nitrogen and Mo concentrations.
  compared with control
- positive
  Mo foliar application reduced leaf nitrate concentration.
  compared with control
EDTA-Coated Fe3O4 Nanoparticles: a Novel Biocompatible Fertilizer for Improving Agronomic Traits of Sunflower (Helianthus Annuus) · 2015
- positive
  Foliar treatment was more effective for sunflower Fe content in some cases.
Improving Agronomic Traits of Sunflower (Helianthus Annuus) · 2015
- positive
  Foliar treatment was more effective for aerial organ biomass and Fe content in some cases.
Effect of Different Levels of Nitrogen and Zinc Fertilizers on Qualitative and Quantitative Characteristics of Sunflower Seeds · 2016
- positive
  Foliar zinc significantly increased sunflower seed nitrogen, phosphor and zinc contents.
Improving Salt Tolerance of Helianthus annuus (L.) Plants by Moringa oleifera Leaf extract · 2016
- positive
  MLE seed soaking or foliar spray significantly increased the ratios K/Na, Ca/Na and K+Ca/Na.
  compared with controls
- positive
  MLE seed soaking or foliar spray significantly increased contents of N, P and K.
  compared with controls
- positive
  MLE seed soaking or foliar spray significantly increased Ca content.
  compared with controls
Boron-induced improvement in physiological, biochemical and growth attributes in sunflower (Helianthus annuusL.) exposed to terminal drought stress · 2018
- positive
  Foliar boron improved leaf and seed nitrogen and boron concentrations under terminal drought.
Effect of foliar nutrition of micro nutrients mixture on nutrient uptake by sunflower (Helianthus annuus L.) · 2019
- positive
  RDF plus soil ZnSo4 and 10 ml L-1 foliar micronutrient mixture produced the highest sunflower nutrient uptake among treatments.
  compared with the other treatments
- positive
  Foliar micronutrient mixture increased sunflower nutrient uptake relative to the absolute control and treatments without foliar application.
  compared with the absolute control and treatments without foliar applications
The effect of special foliar fertilisation applied on inbred sunflower lines in hybrid sunflower seed production. · 2019
- positive
  Special foliar fertilisers had a generally positive effect on Zn and Cu concentrations in hybrid sunflower seed.
- positive
  Special foliar fertilisers had a generally positive effect on N, P and K concentrations in hybrid sunflower seed.
- positive
  Special foliar fertilisers significantly increased the Mo concentration in hybrid sunflower seed.
Foliar Spray of Fe-Asp Confers Better Drought Tolerance in Sunflower as Compared with FeSO4: Yield Traits, Osmotic Adjustment, and Antioxidative Defense Mechanisms · 2020
- positive
  Fe-Asp produced greater essential amino acid accumulation and nutrient acquisition than FeSO4.
  compared with FeSO4
- positive
  Fe-Asp improved leaf aspartate and iron accumulation and translocation compared with FeSO4.
  compared with FeSO4
Enhancement of Cadmium Phytoremediation Potential of Helianthus annuus L. with Application of EDTA and IAA · 2022
- positive
  Foliar IAA enhanced cadmium accumulation.
The influence of different phosphorus solubilizing Bacteria doses and application methods, as well as Phosphorus levels, on Phosphorus content and uptake in sunflower and chickpea at various growth stages · 2024
- positive
  Sunflower phosphorus uptake was highest with 75% phosphorus and PSB at 6 kg/ha.
  compared with No P level
Effect of Foliar Application of Nano, Conventional NPK Fertilizer and Plant Density on Yield Components and Seed Quality of Sunflower (Helianthus annuus L.) · 2024
- positive
  Nano NPK foliar application increased seed nitrogen content compared with lower levels.
  compared with lower levels
Performance of sunflower (Helianthus annuus L.) under different levels of granular fertilizers and nano fertilizers · 2025
- positive
  Nutrient uptake was higher with nano DAP sprayed at two stages.
Enhancing Sunflower growth, yield, and Oil Production by foliar spring of selenium under localized irrigation systems · 2025
- positive
  Foliar selenium, especially 20 ppm Se, improved nutrient content and water use efficiency under deficit irrigation.
  compared with control
Ionomic Profile and Nutrient Use Efficiency in Sunflower Plants Treated with Plant-Derived Biostimulant Rich in Trigonelline · 2025
- positive
  Foliar extract 3 increased sunflower phosphorus concentration by 74.2%.
- positive
  Foliar extract 3 increased sunflower iron concentration by 107.3%.
- positive
  Foliar extract 4 enhanced sunflower nutrient accumulation.
Biofortifying sunflower with Zinc (Zn) aminochelates: a promising strategy for calcareous soil conditions · 2026
- positive
  Foliar Zn(Met)2 increased seed Zn uptake nearly twofold.

Papers reporting a negative result or no effect 1

Mahmoud, A. M.1; E. A. Ali1; Manal A. M. Hassan2* and Asmaa S. A. Sayed1 1 Department of Agronomy, Faculty of Agriculture, Assiut University, Assiut, 71526, Egypt 2 Food Science and Technology Department, Faculty of Agriculture, Assiut University, Assiut 71526, Egypt · 2019
- negative
  Foliar ZnO significantly decreased kernel Zn content compared with control.
  compared with control one
cites 1 paper here

A paper is on the positive side when any of its claims here is positive. Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.

application · Nutrient: content · Helianthus annuus (common sunflower)

How these papers cite each other

Papers reporting a positive result 24

Papers reporting a negative result or no effect 1

application on Helianthus annuus (common sunflower) against other targets

application · nutrient: content on other organisms