Gibberellic acid · Yield · Brassica oleracea (wild cabbage)

Results differ21 papers: 20 positive, 1 negative or no effect · 2 pairs of papers confirmed to differ

48 claims from these papers; 8 citations between them.

Papers whose results differ, checked claim by claim 2

2 pairs of papers on this question report results that differ: an effect in one paper, the opposite effect or no effect in the other. Two model reviewers reading both claims accepted each pair.

Improving the Production of Well Irrigated Cauliflower (Brassica OleraceaL. Var. Botrytis,Cv. Snowball Y. Imp) by Foliar Spraying of some Growth Regulators (2008)
increaseGA3 application increases cauliflower yield, highest at 40 mg/l
Gibberellin-induced Stem Elongation and Apical Bud Growth Acceleration Without Decreased Yield in Broccoli (Brassica oleracea L. var. Italica) (2023)
no changeGA did not decrease yield.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Gibberellin-induced Stem Elongation and Apical Bud Growth Acceleration Without Decreased Yield in Broccoli (Brassica oleracea L. var. Italica) (2023)
no changeGA did not decrease yield.
Effect of GA₃ and NAA on Growth and Yield of Cabbage (2025)
increaseGA₃ at 75 ppm significantly improved cabbage yield to 102.40 t ha⁻¹, 33.39% above control.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →

How these papers cite each other

8 citations between these papers: 7 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 20

Effects of Exogenous GA_3 on Flower Bud Differentiation and Flower-ball Development of Broccoli (Brassica oleracea var. italica) · 2008
- positive
  A 50 mg·L-1 GA3 spray advanced the budding stage, rapid growing stage and initial harvest period of broccoli.
- positive
  A 50 mg·L-1 GA3 spray significantly increased broccoli yield and flower-ball compactness.
Improving the Production of Well Irrigated Cauliflower (Brassica OleraceaL. Var. Botrytis,Cv. Snowball Y. Imp) by Foliar Spraying of some Growth Regulators · 2008
- positive
  GA3 application increases cauliflower yield, highest at 40 mg/l
  compared with check
COMPONENTS OF BIOINTENSIVE PEST MANAGEMENT STRATEGY AGAINST Plutella xylostella IN CAULIFLOWER · 2009
- positive
  The integrated treatment increased cauliflower curd yield to 32.33 and 35.33 t ha-1.
Effect of GA 3 and kinetin on growth, yield and quality of sprouting broccoli ( Brassica oleracea var. italica) · 2011
- positive
  Dipping seedling roots in GA3 30 mg L-1 + kinetin 30 mg L-1 gave maximum growth and yield of sprouting broccoli.
cited by 1 paper here
Effect of nitrogen, naphthalene acetic acid and Gibberellic acid on growth, yield and quality of broccoli (Brassica oleracea var. italica L.) Cv. ‘Sante’ · 2017
- positive
  At that treatment, yield reached 421 q/ha.
cited by 1 paper here
Effect of foliar spray of NAA and GA3 on the growth, curd formation and yield of cauliflower (Brassica oleracea L. var. botrytis) · 2018
- positive
  GA3 at 50 ppm increased yield per hectare of cauliflower (238.22 q).
  compared with all the treatments
- positive
  GA3 at 50 ppm increased yield per plot of cauliflower (10.72 kg).
  compared with all the treatments
- positive
  GA3 at 50 ppm increased individual curd weight of cauliflower (0.89 kg).
  compared with all the treatments
cited by 3 papers here
Effect of Foliar Spray of Plant Growth Regulators on Growth and Quality of Sprouting Broccoli (Brassica oleracea var. italica L.) · 2019
- positive
  GA3 @ 75 ppm increased total yield per hectare to 198.64 q.
  compared with control
- positive
  The combined NAA and GA3 treatment maximized yield per plot.
  compared with rest of treatment combinations
- positive
  GA3 @ 75 ppm increased total yield per plot to 6.44 kg.
  compared with control
cites 1 paper herecited by 2 papers here
Effect of foliar spray of plant growth regulators on yield of sprouting broccoli (Brassica oleracea var. italica L.) · 2019
- positive
  The interaction of NAA at 180 ppm and GA3 at 75 ppm gave a yield per hectare of sprouting broccoli significantly higher than the other combinations.
  compared with rest of treatment combinations
- positive
  The interaction of NAA at 180 ppm and GA3 at 75 ppm gave the maximum head diameter of sprouting broccoli, significantly higher than the other combinations.
  compared with rest of treatment combinations
- positive
  The interaction of NAA at 180 ppm and GA3 at 75 ppm gave a yield per plot of sprouting broccoli significantly higher than the other combinations.
  compared with rest of treatment combinations
Efficacy of plant growth regulator (GA3) on growth and yield attributes of cauliflower (Brassica oleracea var. botrytis L.) at Dehradun valley · 2020
- positive
  GA3 at 60 ppm increased cauliflower yield per plot to 12.28 kg, compared with the control.
  compared with control
- positive
  GA3 at 60 ppm increased cauliflower gross yield to 3.53 g per plant, compared with the control.
  compared with control
- positive
  GA3 at 60 ppm increased cauliflower yield per hectare to 365.63 q, compared with the control.
  compared with control
- positive
  GA3 at 60 ppm increased cauliflower net yield to 1040 g, compared with the control.
  compared with control
cited by 1 paper here
Effect of GA3 and NAA on growth and yield parameters of broccoli (Brassica oleracea var. italica) var. Pusa KTS-1 · 2020
- positive
  Foliar GA3 50 mg/l in broccoli gave main curd weight of 626 g, among all treatments.
  compared with the different treatments
- positive
  Foliar GA3 50 mg/l in broccoli gave yield of 22.35 t per hectare, among all treatments.
  compared with the different treatments
- positive
  Foliar GA3 50 mg/l in broccoli gave yield of 671.67 g per plant, among all treatments.
  compared with the different treatments
- positive
  Foliar GA3 50 mg/l in broccoli gave yield of 19.31 kg per plot, among all treatments.
  compared with the different treatments
cites 2 papers here
Response of foliar application of micronutrients and growth regulators on growth and yield attributes of Cabbage in a Vertisol of Central plain of C.G · 2021
- positive
  Treatment T18 produced maximum cabbage head yield of 455 q ha-1.
- positive
  Treatment T18 produced maximum cabbage leaf yield of 22 q ha-1.
- positive
  Twice applying micronutrients at 100 ppm with GA3 at 50 ppm and NAA at 80 ppm was most effective for cabbage growth and yield.
- positive
  Treatment T18 produced maximum cabbage head diameter of 16.17 cm2.
- positive
  Foliar GA3 and NAA may significantly improve cabbage growth and yield.
Foliar Application of GA3 Stimulates Seed Production in Cauliflower · 2022
- positive
  Applying GA3 at three weeks maximized flowering branches, pods, seeded pods, and seed yield per plant.
cites 1 paper here
Gibberellin-induced Stem Elongation and Apical Bud Growth Acceleration Without Decreased Yield in Broccoli (Brassica oleracea L. var. Italica) · 2023
- positive
  GA did not decrease yield.
The Implications of Growth-Regulating Substances on Growth and Yield Traits of Cauliflower · 2023
- positive
  Foliar GA3 at 150 mg l-1 at 40 and 60 DATP gave a higher yield per hectare (31.22 t) than NAA at 80 mg l-1.
  compared with NAA @ 80 mg l-1 (T7)
- positive
  Foliar GA3 at 150 mg l-1 at 40 and 60 DATP gave a higher yield per plot (20.23 kg) than NAA at 80 mg l-1.
  compared with NAA @ 80 mg l-1 (T7)
cites 1 paper here
Effect of Exogenous Application of Humic Acid, GA3 and Vermiwash on Growth, Yield and Quality of Cabbage (Brassica oleracea var. capitata L.) under Valley Condition of Srinagar Garhwal · 2024
- positive
  Yield per hectare of cabbage was highest under 150 ppm GA3, 321.43 q/ha.
- positive
  Head diameter of cabbage was higher under 100 ppm GA3, 18.98 cm.
cites 2 papers here
THE IMPACT OF GIBERELLIC ACID AND DIFFERENT DECAPITATION METHODS ON SEED YIELD OF BROCCOLI · 2024
- positive
  The combination of 50 ppm GA3 and decapitation of primary heads at appearance gave the highest seed yield per plant (5.42 g) in broccoli.
- positive
  GA3 at 50 ppm as a seedling root dip gave the highest seed yield per plant (4.24 g/plant) among GA3 treatments in broccoli.
- positive
  The combination of 50 ppm GA3 and decapitation of primary heads at appearance gave the highest seed yield per hectare (235.49 kg) in broccoli.
- positive
  GA3 at 50 ppm as a seedling root dip gave the highest seed yield per hectare (1.59 q/ha) among GA3 treatments in broccoli.
Effect of plant growth regulators on growth and yield of cabbage (Brassica oleracea var. capitata) · 2024
- positive
  T9 produced the reported maximum head weight value of 1.65 kg.
  compared with growth regulators
- positive
  T9 produced the reported maximum head yield value of 31.28 ton/ha.
  compared with growth regulators
Effect of foliar spray of plant growth regulators on growth and yield attributes of cauliflower (Brassica oleracea var. botrytis L.) · 2025
- positive
  GA3 at 150 ppm yielded 285.46 q ha-1.
- positive
  GA3 at 150 ppm produced 818.47 g total biomass per plant.
- positive
  GA3 at 150 ppm gave highest curd weight of 389.27 g.
- positive
  GA3 at 150 ppm yielded 8.56 kg plot-1.
Effect of GA₃ and NAA on Growth and Yield of Cabbage · 2025
- positive
  GA₃ at 75 ppm significantly improved cabbage head diameter to 22.60 cm.
  compared with the control
- positive
  GA₃ at 75 ppm significantly improved cabbage yield to 102.40 t ha⁻¹, 33.39% above control.
  compared with the control
Enhancing Growth and Quality of Cabbage (Brassica oleracea var. capitata L.) through Foliar Application of Plant Growth Regulators under Eastern U.P. Conditions · 2025
- positive
  GA₃ at 90 ppm gave superior net head weight of 1091.69 g.

Papers reporting a negative result or no effect 1

Vegetative Growth, Yield and Quality of Broccoli As Influenced by Application of Gibberellic Acid · 2022
- negative
  GA3 above 60 ppm reduced broccoli yield attributes and yield.
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.

Gibberellic acid · Yield · Brassica oleracea (wild cabbage)

Papers whose results differ, checked claim by claim 2

How these papers cite each other

Papers reporting a positive result 20

Papers reporting a negative result or no effect 1

Gibberellic acid on Brassica oleracea (wild cabbage) against other targets

Gibberellic acid · yield on other organisms