<b>The effects of the coexistence of weed communities on table beet yield during early crop development</b> - doi: 10.4025/actasciagron.v32i4.4649

  • Leonardo Bianco Carvalho FCAV
  • Caio Dória Guzzo Universidade Estadual Paulista "Júlio de Mesquita Filho"
  • Robinson Antonio Pitelli Universidade Estadual Paulista "Júlio de Mesquita Filho"
  • Arthur Bernardes Cecílio Filho Universidade Estadual Paulista "Júlio de Mesquita Filho"
  • Silvano Bianco Universidade Estadual Paulista "Júlio de Mesquita Filho"
Palavras-chave: Beta vulgaris, weeds, interference, direct seeding, seedling transplanting

Resumo

The objective was to evaluate the effects of initial weedy periods on the weed community and on the productivity of direct seeded and transplanted table beet cropping systems. A field trial was conducted at São Paulo State University, Brazil, in a randomized complete block design using a 2 x 13 factorial scheme. Direct seeding and seedling transplanting methods were evaluated within thirteen increasing weekly weedy periods. Weed relative importance was calculated and weed density and weed dry matter accumulation data were analyzed by nonlinear regression as well as beet yield and stand, which were submitted to analysis of variance. Amaranthus viridis, Coronopus didymus, Cyperus rotundus, Digitaria nuda, Galinsoga parviflora and Nicandra physaloides were the most important weeds found, with special reference to C. didymus. Weed dry matter accumulation was greater in the direct seeded crop, although weed density was higher in the transplanted crop. Transplanted beet yield was greater than of direct seeded beet in the weed-free treatment during the whole crop cycle. Crop-weed coexistence could remain for four and seven weeks after seeding/transplanting in direct seeded and in transplanted beet, respectively, before reducing yield economically. Thus, direct seeded crop was more susceptible to weed interference than the transplanted one.

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Biografia do Autor

Leonardo Bianco Carvalho, FCAV
Engenheiro Agrônomo, Mestre em Produção Vegetal. Ingressou no curso de Doutorado pelo Programa de Pós-Graduação em Produção Vegetal, na Faculdade de Ciências Agrárias e Veterinárias da Universidade Estadual Paulista, Câmpus de Jaboticabal, no ano de 2008. O tema de tese é o estudo de interferência e controle de Cyperus rotundus em soja geneticamente modificada para tolerância ao glyphosate em áreas de reforma de canavial. Atua nas áreas de pesquisa de biologia, crescimento e nutrição mineral de plantas daninhas; ecologia e manejo de plantas daninhas em áreas agrícolas; interferência de plantas daninhas em culturas agrícolas e ecologia de comunidades infestantes em agroecossistemas. (Texto informado pelo autor) Currículo Lattes
Publicado
2010-11-29
Como Citar
Carvalho, L. B., Guzzo, C. D., Pitelli, R. A., Cecílio Filho, A. B., & Bianco, S. (2010). <b>The effects of the coexistence of weed communities on table beet yield during early crop development</b&gt; - doi: 10.4025/actasciagron.v32i4.4649. Acta Scientiarum. Agronomy, 32(4), 709-714. https://doi.org/10.4025/actasciagron.v32i4.4649
Seção
Produção Vegetal

 

2.0
2019CiteScore
 
 
60th percentile
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2.0
2019CiteScore
 
 
60th percentile
Powered by  Scopus