Interference periods of Commelina benghalensis after coffee establishment

Autor:	L. N. Lemes, Pedro Luis da Costa Aguiar Alves, T.C.S. Dias
Přispěvatelé:	Universidade Estadual Paulista (Unesp)
Jazyk:	portugalština
Rok vydání:	2005
Předmět:	biology desenvolvimento Physiology spiderwort Coffea arabica competição Randomized block design Biomass Sowing Plant Science biology.organism_classification trapoeraba Biochemistry Commelina benghalensis Agronomy Seedling Leaf number Agronomy and Crop Science competition development
Zdroj:	SciELO Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Planta Daninha, Volume: 23, Issue: 3, Pages: 398-404, Published: SEP 2005 Planta Daninha v.23 n.3 2005 Planta daninha Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD) instacron:SBCPD
ISSN:	0100-8358
Popis:	Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:51:39Z No. of bitstreams: 1 S0100-83582005000300002.pdf: 269273 bytes, checksum: c54fb8a9161c13521a64fe225c866459 (MD5) Made available in DSpace on 2013-08-22T18:51:39Z (GMT). No. of bitstreams: 1 S0100-83582005000300002.pdf: 269273 bytes, checksum: c54fb8a9161c13521a64fe225c866459 (MD5) Previous issue date: 2005-09-01 Made available in DSpace on 2013-09-30T19:42:42Z (GMT). No. of bitstreams: 2 S0100-83582005000300002.pdf: 269273 bytes, checksum: c54fb8a9161c13521a64fe225c866459 (MD5) S0100-83582005000300002.pdf.txt: 28609 bytes, checksum: c60d169c3e98df9d6503ee8b256afa90 (MD5) Previous issue date: 2005-09-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:13:06Z No. of bitstreams: 2 S0100-83582005000300002.pdf: 269273 bytes, checksum: c54fb8a9161c13521a64fe225c866459 (MD5) S0100-83582005000300002.pdf.txt: 28609 bytes, checksum: c60d169c3e98df9d6503ee8b256afa90 (MD5) Made available in DSpace on 2014-05-20T13:13:06Z (GMT). No. of bitstreams: 2 S0100-83582005000300002.pdf: 269273 bytes, checksum: c54fb8a9161c13521a64fe225c866459 (MD5) S0100-83582005000300002.pdf.txt: 28609 bytes, checksum: c60d169c3e98df9d6503ee8b256afa90 (MD5) Previous issue date: 2005-09-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) A presente pesquisa teve por objetivo avaliar os períodos de interferência de Commelina benghalensis sobre o crescimento inicial de mudas de Coffea arabica, sob condições de inverno e verão. Para isso, mudas de café e, posteriormente, de trapoeraba foram transplantadas para caixas de cimento-amianto com capacidade de 70 L, utilizando solo como substrato. Os períodos de convivência ou controle foram de 0-15, 0-30, 0-45, 0-60, 075 e 0-90 dias após o plantio do cafeeiro, totalizando 12 tratamentos, dispostos em blocos casualizados, em quatro repetições. Ao término de cada período, avaliaram-se algumas características de crescimento das plantas. As características do cafeeiro mais afetadas pela trapoeraba foram a área foliar e a biomassa seca de folhas das mudas de café, sendo essas as únicas características que apresentaram reduções significativas no verão. No inverno, o número de folhas e a biomassa seca do caule também tiveram reduções significativas. Os períodos críticos de prevenção da interferência foram de 15 a 88 e 22 a 38 dias após o plantio das mudas de café, para condições de inverno e verão, respectivamente. This research aimed to evaluate the periods of interference of Commelina benghalensis in the initial growth of Coffea arabica seedlings under winter and summer conditions. Coffee seedlings, later followed by spiderwort seedlings, were transplanted into 70 L cement boxes, using soil as substrate. The control periods were: 0-15, 0-30, 0-45, 0-60, 075 and 0-90 days after coffee sowing, using 12 treatments arranged in a randomized block design, with four replications. At the end of each period, plant height characteristics were evaluated. The coffee plant characteristics most affected by spiderwort were the foliar area and dry biomass of the coffee seedling leaves, under summer conditions. Leaf number and stem dry biomass also suffered significant reductions under winter conditions. The critical periods of interference prevention were 15 to 88 and 22 to 38 days after coffee seedling sowing, under winter and summer conditions, respectively. UNESP FCA Departamento de Biologia Aplicada à Agropecuária UNESP FCAV UNESP FCA Departamento de Biologia Aplicada à Agropecuária UNESP FCAV
Databáze:	OpenAIRE
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