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首页> 外文期刊>Acta Horticulturae >Chemical Thinning of 'Fuji' Apples Growing in a Mild Winter Climate
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Chemical Thinning of 'Fuji' Apples Growing in a Mild Winter Climate

机译:冬季气候温和生长的“富士”苹果的化学稀释

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Apple trees growing in mild winter conditions, such as in Southern Brazil, bear fruit mainly in brindles and in axillary buds, setting 4 or more fruits per cluster, with short peduncles that increase hand thinning labor. The thinning effects of NAA (10 and 15 mgL~(-1)), Carbaryl (750 mgL~(-1)), Benzyladenine (75 and 340 mgL~(-1)), and Ethephon (100 mgL~(-1)), on 'Fuji' apples, were evaluated from 2001 to 2004. Experiments were carried out in Cacador and Fraiburgo (27° S), in Santa Catarina State, Brazil, in orchards trained to a central leader system. The chemicals were applied singly or as combinations of two products, at blooming and after blooming stages, with fruits up to 24 mm in diameter. Benzyladenine applied alone or in combination with NAAreduced the fruit set of 'Gala' if compared to the NAA + Carbaryl the standard treatment (control). NAA 10 mgL~(-1) at 5 DAFB + Benzyladenine 75 mgL~(-1) increased mean fruit weight by 10.4% in relation to the hand thinning treatment. In 'Fuji' trees, NAA + Benzyladenine reduced the number of clusters with 3 or more fruits. Benzyladenine was efficient when applied to fruits 10 mm in diameter. It also increased mean fruit weight and the percentage of fruits in the larger size classes. Benzyladenine at 160 mgL~(-1) induced growth of axillary buds in the current season's terminals. Benzyladenine is a new and efficient alternative for thinning apples grown under mild winter climate.
机译:在温和的冬季条件下生长的苹果树,例如在巴西南部,主要在有毛和腋芽中结实,每簇结实4个或更多果实,而花序短的花梗增加了人工稀疏劳动。 NAA(10和15 mgL〜(-1)),Carbaryl(750 mgL〜(-1)),Benzyladenine(75和340 mgL〜(-1))和乙烯利(100 mgL〜(-1)的稀释作用)),从2001年至2004年对“富士”苹果进行了评估。在巴西圣卡塔琳娜州的Cacador和Fraiburgo(南纬27°)进行了中央领导系统培训的果园中进行了实验。在开花阶段和开花后阶段,可单独或以两种产品的组合形式使用化学药品,其果实直径最大为24 mm。如果与标准处理(对照)NAA + Carbaryl相比,单独或与NAA组合使用的苄基腺嘌呤减少了“ Gala”的果实。相对于稀疏处理,NAA 10 mgL〜(-1)在5 DAFB + 75 mgL〜(-1)苄基腺嘌呤可使平均果实重量增加10.4%。在“富士”树中,NAA +苄基腺嘌呤减少了具有3个或更多果实的簇的数量。将苄基腺嘌呤应用于直径为10毫米的水果时非常有效。它也增加了平均水果重量和较大尺寸水果中水果的百分比。 160 mgL〜(-1)的苄基腺嘌呤能诱导本季节末梢的腋芽生长。苄基腺嘌呤是在冬季气候温和的条件下稀疏苹果的一种新型高效替代品。

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