Data/hora: 26/06/2024 16:07:50

Biblioteca(s): | Epagri-Sede.
Data corrente: | 11/12/2023
Data da última atualização: | 11/12/2023
Autoria: | VAES, L. M.; GIOVANETTI, L. K.; LANZENDORF, D. Z.; ZIMMERMANN, M. L. S.; KURTZ, C.; COMIN, J. J.; LOVATO, P. E.
Título: | SOIL CHEMICAL ATTRIBUTES IN LONG-TERM ONION NO-TILLAGE VEGETABLE SYSTEM.
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. 433
Idioma: | Inglês

Conteúdo:

The use of cover crops, essental for a no-tllage vegetable system (NTVS), modifes soil chemical atributes.
This study sought to evaluate how di&#64256;erent winter cover crops a&#64256;ect soil chemical atributes in the onion
NTVS conducted for ten years. The work was conducted in an experimental area in the municipality of
Ituporanga (SC) that has had onion NTVS since 2009. The treatments were black-oats (BO) (Avena strigosa)
single, oilseed-radish (OR) (Raphanus satvus) single, BO+OR intercropped and fallow (weeds) in winter,
followed by onion (Allium cepa) in spring and velvet-bean (Mucuna aterrima) in summer, in a randomized
block design. Afer onion cultvaton in 2010, 2015 and 2020 soil samples (0-10 cm) were collected for
chemical characterizaton: pH (H2O), organic-mater (OM), P and K+ (Mehlich-1), Ca2+, Mg2+, Al3+, potental
acidity, caton exchange capacity (CEC), base sum (SB) and base saturaton. There was no di&#64256;erence among
treatments, only in the years, except for K+ and Al3+ which did not di&#64256;er between the factors and ranged
from 224-760 mg dm-3 and 0-0.02 cmolc dm-3. In 2010 and 2015, pH increased from 5.6 to 6.3, P from
80.3 to 130.7 mg dm-3; Ca from 5.7 to 8.9 cmolc dm-³, CEC from 15.1 to 16.4 cmolc dm-3, base saturaton
from 68 to 79% and SB from 10.2 to 12.9 cmolc dm-³, and not di&#64256;er between 2015 and 2020. From 2010 to
2015, there was a reducton in potental acidity (4.9 to 3.6 cmolc dm-3) and Mg2+ (3.2 to 2.7 cmolc dm-³),
values were maintained in 2020. OM, P and Ca2+ decreased between 2015 and 2020, from 4.1 to 3.6%;
130.7 to 107.6 mg dm-3; 8.9 to 8.4 cmolc dm-3, respectvely. The use of onion NTVS increases pH, P, Ca2+,
CEC, V% and SB and reduces soil potental acidity from fve years of management. The reducton of P and Ca
between 2010 and 2015, is related to the non-practce of fertlizaton of the area due to the high nutritonal
contents found.

Thesagro: | Allium cepa; Avena strigosa; Cover crops; NTVS; Raphanus satvus.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_59534.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (108996-1) - UPC - PL - DD -  -  -  - DIS