Foliar chitosan treatments significantly increased vegetative growth (shoot diameter and leaf area) of Flame Seedless grapevines.

chitosan · growth · VitisResults differ

8 papers in the same direction as this claim

1. positive
   Chitosan reduced vegetation vigor without negative effects on grape production.

   Impact of Alternative Fungicides on Grape Downy Mildew Control and Vine Growth and Development · 2015

   Same direction

2. positive
   Chitosan increased plant height and root number compared with untreated plants.

   Potential Use of Chitosan in the Control of Grapevine Trunk Diseases. · 2007 · compared with untreated plants

   Same direction

3. positive
   Packaging with chitosan controlled gray mold growth.

   Effects of Modified Atmosphere Packaging and Chitosan Treatment on Quality and Sensorial Parameters of Minimally Processed cv. ‘Italia’ Table Grapes · 2021

   Same direction

4. positive
   Higher molecular weight chitosan delayed grape fresh-weight loss.

   Influence of chitosan treatment on the disease incidence and quality deterioration of postharvest grape. · 2007

   Same direction

5. positive
   Chitosan hydrochloride increased root development in grapevine

   Deciphering Chitosan–Host Plant Interaction in Esca Disease · 2023

   Same direction

6. positive
   15 mg L − ¹ chitosan in cocopeat yielded the greatest shoot elongation, 24.63 cm.

   Evaluation of the effects of chitosan application and growing media on the adaptation process of fercal grape rootstock · 2025

   Same direction

7. positive
   Chitosan nanoparticles at 200 ppm were the most effective treatment for stimulating all growth parameters of grapevine relative to control.

   The Impact of Foliar Spray of Chitosan Nano-particles and Bulk Form on Crimson Seedless Grapevine Quality and Productivity · 2021 · compared with control treatment

   Same direction

8. positive
   The tallest shoots measured 77 cm under 0.4% chitosan.

   Optimisation of rooting and growth of grapevine cuttings through chitosan application and substrate selection · 2025

   Same direction

application · growth · VitisPositive and negative results

36 papers in the same direction as this claim · 9 in the opposite direction

1. negative
   On day 60 after acetochlor spraying, the size of grape chloroplasts decreased.

   [Effects of acetochlor on the photosynthetic and fluorescence characteristics and chloroplast structure of grape leaves]. · 2012

   Opposite direction

2. no effect
   Spraying clusters without prebloom shoot inhibition had no inhibitory effect on shoot growth during bloom and set.

   Promotion of Berry Set in Grapes by Growth Retardants · 1976

   Opposite direction

3. negative
   Shoot spray treatment depressed leaf development in grapes.

   Promotion of Berry Set in Grapes by Growth Retardants · 1974

   Opposite direction

4. negative
   Root weight decreased after 2 % MgSO4 foliar application in all genotypes except V. longii, V. vulpina, St. George, and Fercal.

   SCREENING VITIS SPECIES FOR USE IN BREEDING MAGNESIUM TOLERANT ROOTSTOCKS · 2003

   Opposite direction

5. negative
   Growth regulator sprays decreased grapevine shoot growth rate.

   Growth retardants and nutrition characteristics of the Thompson seedless and Italia grape cultivars · 2000

   Opposite direction

6. no effect
   Potassium and iron fertilization sources and foliar treatment did not change leaf phosphorus percentage

   GRAPEVINE FE-CHLOROSIS ON PODUNAVLJE VINEGROWING AREA · 2012

   Opposite direction

7. no effect
   Auxin soaking at the bottom of cuttings had no effect on shoot formation.

   An Utilizing Marginal Red Yellow Podzolic Soil as a Growing Medium for Auxin-Soaked Cutting Propagation of Red Master Grapes (Vitis vinifera L) · 2023

   Opposite direction

8. no effect
   Guoshimei root irrigation and spraying had no significant effect on germination stage.

   Effect of Chemical Treatment on Sprouting of Grape Branches · 2010

   Opposite direction

37 papers more in this group