Data/hora: 10/06/2024 08:02:39

Biblioteca(s): | Embrapa Hortaliças; Embrapa Unidades Centrais.
Data corrente: | 02/01/2001
Data da última atualização: | 25/02/2019
Autoria: | MARENCO, R. A.; LUSTOSA, D. C.
Afiliação: | RICARDO ANTONIO MARENCO, Instituto Nacional de Pesquisas da Amazônia - INPA; DENISE CASTRO LUSTOSA, Universidade Federal de Viçosa - UFV/PIBIC-CNPq scholarship.
Título: | Soil solarization for weed control in carrot.
Ano de publicação: | 2000
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 10, p. 2025-32, out. 2000.
Idioma: | Inglês
Notas: | Título em português: Solarização do solo para o controle de plantas daninhas na cultura de cenoura.
Conteúdo: | Soil solarization is a technique used for weed and plant disease control in regions with high levels of solar radiation. The effect of solarization (0, 3, 6, and 9 weeks) upon weed populations, carrot (Daucus carota L. cv. Brasília) yield and nematode infestation in carrot roots was studied in São Luís (2o35' S; 44o10' W), MA, Brazil, using transparent polyethylene films (100 and 150 mm of thickness). The maximum temperature at 5 cm of depth was about 10oC warmer in solarized soil than in control plots. In the study 20 weed types were recorded. Solarization reduced weed biomass and density in about 50% of weed species, including Cyperus spp., Chamaecrista nictans var. paraguariensis (Chod & Hassl.) Irwin & Barneby, Marsypianthes chamaedrys (Vahl) O. Kuntze, Mitracarpus sp., Mollugo verticillata L., Sebastiania corniculata M. Arg., and Spigelia anthelmia L. Approximately 40% of species in the weed flora were not affected by soil mulching. Furthermore, seed germination of Commelina benghalensis L. was increased by soil solarization. Marketable yield of carrots was greater in solarized soil than in the unsolarized one. It was concluded that solarization for nine weeks increases carrot yield and is effective for controlling more than half of the weed species recorded. Mulching was not effective for controlling root-knot nematodes in carrot.
Palavras-Chave: | Aquecimento do solo; Carrot; Chamaecrista nictans guariensis para; Cobertura de plastico; Control; Controle; Controle de nematóides; Cultivar Brasilia; Desinfeccao do solo; Marsypianthes chamaedrys; Mitacarpus; Mollugo verticillata; Nematode controls; Organic farming; Planta daninha; Plastic film covers; Plastics film covers; Sebastiana corniculata; Soil desinfection; Solarizacao; Solarization; Spigelia anthelmia.
Thesagro: | Agricultura Orgânica; Cenoura; Cobertura do Solo; Daucus Carota; Erva Daninha; Radiação Solar; Solo Arenoso.
Thesaurus Nal: | Commelina benghalensis; Cyperus; mulching; Sandy soils; Soil heating; solar radiation; varieties; weeds.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/18825/1/pab99_126.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)

Exemplares:

AI-SEDE - (18825-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPH - (20222-1) - ADD - AP - -- - 630.5 -  - 630.5 - DIS