Building on our previous research on the application of 6-Benzylaminopurine (6-BA) in promoting seed germination and yield enhancement, today we will explore its role in regulating flower-fruit development and improving fruit setting efficiency.
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Watermelon & Melon
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Method: Apply 100 mg/L 6-BA to the fruit pedicel on the day of flowering.
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Effect: Promotes fruit setting.
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Pumpkin & Zucchini
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Method: Apply 100 mg/L 6-BA to the fruit pedicel 1 day before to the day of flowering.
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Effect: Enhances fruit retention.
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Cucumber
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Method: Spray 60 mg/L 6-BA on fully open female flowers and young fruits.
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Effect: Improves fruit setting, accelerates young fruit growth, increases marketable fruit count, and boosts yield.
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Tomato
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Method: Dip or spray inflorescences with 100 mg/L 6-BA + 20–30 mg/L gibberellic acid (GA3) during flowering.
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Effect: Promotes fruit setting and prevents hollow fruit.
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Jujube (Chinese Date)
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Method: Spray fruits with 20–28.5 mg/L 6-BA from 70–80% flowering to rapid fruit expansion stage (until fruit surface is evenly wet).
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Protocol:
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Avoid use after fruit hardening.
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Repeat every 10–15 days for 2–3 applications.
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Effect: Stimulates flower bud differentiation, accelerates growth, strengthens plants, enlarges fruits, and increases yield.
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Grape
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Flowering Stage: Dip inflorescences in 100 mg/L 6-BA.
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Effect: Promotes fruit setting and induces seedless berry formation.
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Post-Flowering: Apply 50–100 mg/L 6-BA + 20–30 mg/L GA3.
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Effect: Enhances berry expansion, improves yield, and quality.
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Citrus
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Timing:
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Post-flowering (before 1st physiological fruit drop).
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Young fruit stage (before 2nd physiological fruit drop).
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Pre-fruit expansion stage.
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Method: Spray 33.3–50 mg/L 6-BA on flowers and fruits (3 applications).
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Effect: Increases fruit retention and yield.
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