Alternate bearing (biennial or uneven bearing) is the tendency of fruit trees to produce a heavy crop one year followed by a light crop or no crop the following "off-crop" year. Using "Pixie" mandarin (Citrus reticulata), researchers in California investigated when and how fruit perpetuate cyclic differences in floral intensity. Research has indicated that alternate bearing in citrus is due to a lack of flowering in the spring following a heavy on-crop year. ...> Full Article
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