Data/hora: 19/06/2024 07:40:38

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 01/07/2021
Data da última atualização: | 01/07/2021
Autoria: | COSTA, D. P.; STUCHI, E. S.; GIRARDI, E. A.; MOREIRA, A. S.; GESTEIRA, A. da S.; COELHO FILHO, M. A.; LEDO, C. A. da S.; SILVA, A. L. V. da; LEÃO, H. C. de; PASSOS, O. S.; SOARES FILHO, W. dos S.
Afiliação: | DANILO PEREIRA COSTA, UESC; EDUARDO SANCHES STUCHI, CNPMF; EDUARDO AUGUSTO GIRARDI, CNPMF; ALECIO SOUZA MOREIRA, CNPMF; ABELMON DA SILVA GESTEIRA, CNPMF; MAURICIO ANTONIO COELHO FILHO, CNPMF; CARLOS ALBERTO DA SILVA LEDO, CNPMF; ANDRÉ LUIZ VANUCCI DA SILVA; HELTON CARLOS DE LEÃO; ORLANDO SAMPAIO PASSOS, CNPMF; WALTER DOS SANTOS SOARES FILHO, CNPMF.
Título: | Less Is more: A hard Way to get potential dwarfing hybrid rootstocks for Valencia Sweet Orange.
Ano de publicação: | 2021
Fonte/Imprenta: | Agriculture, v.11, n.4, p.354, 2021.
ISSN: | 2077-0472
Idioma: | Inglês
Conteúdo: | As in several fruit crops, citrus trees with decreased size allow for a higher planting density, which may lead to higher productivity and facilitate operations such as harvesting and spraying. The use of dwarfing rootstocks is one of the most feasible methods for tree size control, but few commercial varieties are available to date. In this work, the long-term performance of Valencia sweet orange grafted onto 51 hybrid citrus rootstocks was evaluated in rainfed cultivation at 6.0 m × 2.5 m tree spacing in Northern São Paulo State, Brazil. About a third of the evaluated hybrids were classified as dwarfing and semi-dwarfing rootstocks, that is, respectively inducing a relative canopy volume of <40% and 40?60% compared with the standard rootstock, the Rangpur lime Santa Cruz selection. The production efficiency and soluble solids concentration were conversely related to the canopy volume. Three citrandarins of Sunki mandarin (TSKC) × Flying Dragon trifoliate orange (TRFD) were grouped within the most productive dwarfing rootstocks. Other hybrids that expressively decreased tree size were mainly sensitive to drought; therefore, the mean fruit yield was low, indicating the need for irrigation, albeit fruit quality was high. Estimated productivity on the selected TSKC × TRFD rootstocks would double to an average of 40 t·ha?1·year?1 if tree spacing was adjusted to the smaller tree size. Although the HTR-208 citrandarin and the LCR × CTSW-009 citrumelimonia were as vigorous as the Santa Cruz Rangpur lime, they induced an outstanding fruit yield due to their highest tolerance to drought and, hence, can be considered for rainfed cultivation at wider tree spacing.
Thesagro: | Laranja.
Thesaurus Nal: | Citrus; Drought tolerance; Fruit quality; Fruit yield; Graft compatibility; Poncirus.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (33258-1) - UPC - AP - DD - Publicação digital -  -  - DIS