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How to Prevent Tea Plants from Flowering? Introduction to Practical Measures

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Every year in summer and autumn, tea plants both form new tea buds of the current year and produce flower buds, while the fruits of the previous year mature, creating a "bearing young while pregnant" phenomenon that affects the yield and quality of fresh leaves. To improve tea yield and quality, the measures to prevent tea plants from flowering are introduced as follows: 1. Spray gibberellin. During the peak period of physiological flower bud differentiation, use 100 mg/kg gibberellin plus 75-100 kg of 2% urea aqueous solution per mu, and spray evenly on the upper surface of the leaves. Gibberellin can stimulate the elongation and division of tea bud primordial cells

Every year in summer and autumn, tea plants both form new tea buds of the current year and produce flower buds, while the fruits of the previous year mature, creating a "bearing young while pregnant" phenomenon that affects the yield and quality of fresh leaves. To improve tea yield and quality, the measures to prevent tea plants from flowering are introduced as follows:

1. Spray gibberellin. During the peak period of physiological flower bud differentiation, use 100 mg/kg gibberellin plus 75-100 kg of 2% urea aqueous solution per mu, and spray evenly on the upper surface of the leaves. Gibberellin can stimulate the elongation and division of tea bud primordial cells, promote the differentiation of vegetative buds, and increase tea yield. Two points should be noted when spraying gibberellin: first, although gibberellin can promote vegetative growth, it cannot replace fertilizer, and fertilizer must be applied in production to enhance tree vigor; second, it should be sprayed during the peak period of physiological flower bud differentiation for the best effect.

2. Reasonable picking and pruning. Flower buds are concentrated on the opposite short branches left unpicked in the first and second rounds, and the number of flower buds on side branches and along-branch shoots of a tea plant accounts for about 82% of the total. The opposite-leaf branches with shorter internodes left unpicked in early spring have the most flower buds in the current year and are also the branches bearing the most fruits from the previous year, so in production, early spring picking should be started early. In this way, spring tea yield can be increased while reducing flower bud differentiation in the current year. In winter pruning, side branches can be properly trimmed to reduce flower and fruit branches, so that nutrients are concentrated on supplying tea buds on the canopy surface.

3. Chemical flower removal. If no treatment was applied during the physiological flower bud differentiation period, spray 600-800 mg/kg ethephon to thin flowers before the flower buds turn white. This can reduce the number of fruits, reduce nutrient consumption by fruits, benefit tea bud development, and improve tea yield and quality.

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