Data/hora: 22/06/2024 11:09:12

Biblioteca(s): | Embrapa Uva e Vinho.
Data corrente: | 09/01/2019
Data da última atualização: | 25/01/2022
Autoria: | DE CONTI, L.; MELO, G. W. B. de; CERETTA, C. A.; TAROUCO, C. P.; MARQUES, A. C. R.; NICOLOSO, F. T.; TASSINARI, A.; TIECHER, T. L.; CESCO, S.; MIMMO, T.; BRUNETTO, G.
Afiliação: | LESSANDRO DE CONTI, Department of Soil Science, Center of Rural Sciences, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil; GEORGE WELLINGTON BASTOS DE MELO, CNPUV; CARLOS ALBERTO CERETTA, Department of Soils of the Federal University of Santa Maria, Brazil; CAMILA PELIGRINOTTI TAROUCO, 3Department of Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil; ANDERSON CESAR RAMOS MARQUES, Federal University of Santa Maria, Brazil; FERNANDO T. NICOLOSO, Department of Biology, Center of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil; ADRIELE TASSINARI, 1Department of Soil Science, Center of Rural Sciences, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil; TADEU LUIS TIECHER, 1Department of Soil Science, Center of Rural Sciences, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil; STEFANO CESCO, Faculty of Science and Technology, Free University of Bolzano, Piazza Universita 5, 39100, Bolzano, Italy; TANJA MIMMO, Faculty of Science and Technology, Free University of Bolzano, Piazza Universita 5, 39100, Bolzano, Italy; GUSTAVO BRUNETTO, Departament of Soil Science, Federal University of Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazi.
Título: | Photosynthesis and growth of young grapevines intercropped with native grasses in soils contaminated with copper.
Ano de publicação: | 2018
Fonte/Imprenta: | Acta Horticulturae, v. 1217, p. 179-184, 2018. Publicado no ISHS Acta Horticulturae 1217: VIII International Symposium on Mineral Nutrition of Fruit Crops, 2018.
DOI: | 10.17660/ActaHortic.2018.1217.23
Idioma: | Inglês
Conteúdo: | High copper (Cu) contents in vineyard soils due to long-term foliage-defense program based on Cu-containing fungicides may cause physiological and nutritional disorders in young grapevines, limiting plant growth and in some cases also compromising plant survival. This problem is particularly evident in viticultural areas of southern Brazil. Therefore, the study aimed to assess if the intercropping of grapevines with native grasses of southern Brazil can contribute to limit the soil Cu availability and thus the onset of toxicity symptoms (i.e., impairment of photosynthetic and growth parameters). In order to do this, we collected soil samples in the natural grassland of the Pampa Biome (southern Brazil). The samples were air-dried, the acidity, phosphorus and potassium levels were corrected and the samples were consequently incubated. We used three Cu levels ? control (i.e., no Cu addition), 40 and 80 mg Cu kg-1. Such Cu levels are normally found in vineyard soils of the region. The experimental design was completely randomized with three replications. At each Cu level, we set up three combinations of monocropping (Grapevine), and intercropping with Paspalum plicatulum Michx. (Grapevine + Paspalum plicatulum) and Axonopus affinis Chase (Grapevine + Axonopus affinis). In the intercropped treatments, two grass seedlings were transplanted into each experimental unit, 35 days before transplanting the grapevines. The experiment was conducted for 70 days. At 41 days after transplanting the grapevines, gas exchange (IRGA) was measured. At 70 days, plant height and total dry matter yield were determined and the relative growth rate was quantified. The addition of Cu caused phytotoxicity in the single crop (Grapevine), reducing photosynthetic carbon assimilation and plant growth. The cultivation of young grapevines intercropped with native grasses, especially Paspalum plicatulum Michx., promoted the growth of the grapevines in the control soil as well as in the moderately Cu-contaminated soils. This indicates that maintaining native vegetation in young vineyards can reduce Cu toxicity to transplanted grapevines. Keywords: cover crops, phytotoxicity, heavy metals, biome pampa, Vitis vinifera
Palavras-Chave: | Biome pampa; Grapevines; Growth; Native grasses; Soils contaminated; Young grapevines.
Thesagro: | Vitis Vinifera.
Thesaurus Nal: | Copper; Cover crops; Heavy metals; Photosynthesis; Phytotoxicity.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/190112/1/Photosynthesis-and-growth-of-young-grapevines.pdf
Registro original: | Embrapa Uva e Vinho (CNPUV)
Exemplares: | CNPUV - (18105-1) - UPC - AP - DD -  -  -  - DIS