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Addition of nitrogen had no effect on yield and quality of apples in an high density orchard carrying a dwarf rootstock Rev. Bras. Frutic.
Ernani,Paulo Roberto; Rogeri,Douglas Antônio; Proença,Marcelo Machado; Dias,Jaques.
The effect of N addition on apple yield and quality may vary according to the tree vigor. Apple trees developed over vigorous rootstocks had shown no response to N application in Brazil. In this study it was evaluated the effect of N addition to the soil on yield and quality of ´Royal Gala´ apples grafted on a dwarf rootstock (M.9). The orchard was planted in 1995 (2,857 trees ha-1) on an Oxisol containing 40 g kg-1 of organic matter and pH 6.0. The experiment was carried out from 1998 up to 2005. Treatments consisted of rates of N (0, 50, 100 and 150 kg ha-1 year-1 from 1998 to 2001, and respectively 0, 100, 200 and 300 kg ha-1 afterwards), all broadcasted within the tree row in two equal splits, at bud break and after harvest, as ammonium sulfate....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Apple yield; M.9 rootstock; Fruit quality; Nitrogen.
Ano: 2008 URL:
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