Data/hora: 29/06/2024 11:18:45

Biblioteca(s): | Epagri-Sede.
Tipo da produção científica: | Resumo em Anais de Congresso
Data corrente: | 11/12/2023
Data da última atualização: | 11/12/2023
Autoria: | ZIMMERMANN, M. L. S.; GIOVANETTI, L. K.; LANZENDORF, D. Z.; VAES, L. M.; KURTZ, C.; COMIN, J. J.; LOVATO, P. E.
Título: | SPORES NUMBER OF MYCORRHIZAL ARBUSCULAR FUNGI IN ONION NO-TILLAGE SYSTEM WITH DIFFERENT CROP ROTATIONS.
Ano de publicação: | 2023
Fonte/Imprenta: | In: CONGRESSO LATINO-AMERICANO DE CIÊNCIA DO SOLO, 23., CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 38., 2023, Florianópolis, SC. Resumos... Florianópolis, SC: Epagri, 2023. p. 230
Idioma: | Inglês

Conteúdo:

The soil spores number of Arbuscular Mycorrhizal Fungi (AMF) is related to the mycotrophic character of
the cultvated species and this is intensifed in the no-tllage vegetable system (NTVS) with the use of plant
rotaton. Aiming to evaluate the e&#64256;ect of di&#64256;erent rotatons used in NTVS on the number of AMF spores, we
carried out a study with di&#64256;erent rotatons of winter and summer crops and onion in spring. The experiment
was conducted in an experimental area of EPAGRI in Ituporanga, SC, with the same sequence of species
cultvated for four years. The treatments were rotatons of black-oats (BO)/onion/velvet-bean, BO/onion/
soybean; oilseed-radish (OR)/onion/velvet-bean, OR/onion/millet, BO+OR/onion/common-beans, BO+OR/
onion/velvet-bean, fallow (weeds)/onion/maize and fallow/onion/velvet-bean in winter/spring/summer,
respectvely. Soil (0-10 cm) was collected at winter plant &#64258;owering (July) and onion bulbing (October) in
2022 for spore counts afer wet sieving extracton. At the end of the winter cover crops, the fallow/onion/
maize showed the highest number of spores (245 spores per 50 cm3 of soil), higher than BO/onion/soybean
and fallow/onion/velvet-bean. The treatments with the presence of oilseed-radish (a species that does
not associate with AMF) in this period showed the lowest numbers of spores (77; 72 and 82 per 50 cm3
of soil for OR/onion/velvet-bean, OR/onion/millet and BO+OR/onion/velvet-bean, respectvely). During
onion cultvaton, the spores number of AMF did not di&#64256;er among treatments and varied from 94 to 145
spores per 50 cm3 of soil. The Fallow and BO increased the spores number of AMF, while OR reduced it,
but subsequent onion cultvaton recovered the number of the propagules in the soil. Mycotrophic crops
increase AMF spores number in an onion no-tllage system.

Thesagro: | Allium cepa; AMF; Cover crops; Mycotrophic; NTVS.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_59565.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (108999-1) - UPC - PL - DD -  -  -  - DIS