Data/hora: 01/06/2024 18:21:01

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 22/11/2010
Data da última atualização: | 25/11/2010
Autoria: | SILVA, S. R.; STUCHI, E. S.; CANTUARIAS-AVILÉS, T.; GIRARDI, E. A.; REIFF, E. T.
Afiliação: | Simone Rodrigues da Silva, EEBC; EDUARDO SANCHES STUCHI, CNPMF; Tatiana Cantuarias-Avilés, ESALQ; Eduardo Augusto Girardi, ESALQ; Eduardo Toller Reiff, EECB.
Título: | Plant growth, yield and citrus variegated chlorosis incidence on Mediterranean mid-season sweet oranges (Citrus sinensis L.Osbeck).
Ano de publicação: | 2010
Fonte/Imprenta: | In: INTERNATIONAL HORTICULTURAL CONGRESS, 28., 2010, Lisboa. Science and horticulture for people: programme & book of abstracts. Lisboa: ISHS, 2010. v. 1, p. 148. 1 CD-ROM.
Idioma: | Inglês
Notas: | T02.222 , pdf.
Conteúdo: | Mid-season sweet oranges ‘Sanguínea’, ‘Amares’, ‘Prata da Ponte’, ‘Prata Lima’, ‘Pala’, ‘Portela’, ‘Évora’, ‘Vale dos Besteiros/161’, ‘Biondo’, ‘Belladona’, ‘Vera’, ‘Entrefina’, ‘Pardilhó’, ‘Verde de Espanha’, ‘Vale dos Besteiros/175’, ‘RAH’ and ‘Maçã’ budded onto ‘Sunki’ mandarin were planted in 2001, in Bebedouro, SP, Brazil. A randomized block design, with 3 replications and 2 plants per plot was utilized. In the 2006-2008 period (year 5 to 7 after planting), mean values of plant height, plant diameter and canopy volume were 3.51 m, 3.11 m and 18.82 m3, respectively, while the mean increment of canopy volume was 3.83 m3·yr-1. Despite of its large vegetative vigour, the ‘Belladona’ variety showed a low cumulative yield in the 2005-2008 period of 28.98 kg/plant (12.55 t·ha-1). In the same period, the other varieties had similar mean yields, of 119.54 kg/plant (51.75 t·ha-1). In the first two commercial harvests (2005 and 2006), the ‘Biondo’ and ‘Portela’ varieties produced less than 5% of total cumulative yield, against an average of 23.23% in the other varieties. Yield efficiency of ‘Prata Lima’ (3.12 kg·m-3) and ‘Verde de Espanha’ (3.37 kg·m-3) significantly differed from that of ‘Belladona’ (0.59 kg·m-3), while the other varieties had a mean yield efficiency of 2.37 kg·m-3. The alternate bearing index was similar for all the varieties (0.82), indicating a pronounced yield alternation under dry conditions. In the 2005-2008 period, the citrus variegated chlorosis (CVC) affected all the varieties, with a lower incidence (< 33%) in the ‘Belladona’ and ‘Pardilhó’ scions. These two varieties also had lower CVC severity score (<0.33), while ‘Evora’, ‘Vale dos Besteiros/161’, ‘Entrefina’, ‘Vera’ and ‘Verde de Espanha’ sweet oranges had the highest CVC incidence (> 80%) and more severe disease symptoms.
Palavras-Chave: | Orange; Plant diseases.
Thesagro: | Doença de Planta; Fruta Cítrica.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (27004-1) - UPC - PL - PP -  -  -  - PCT