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| Pavan,Marcos Antonio; Chaves,Júlio César Dias; Siqueira,Rubens; Androcioli Filho,Armando; Colozzi Filho,Arnaldo; Balota,Elcio Liborio. |
| The objective of this work was to evaluate the effect of coffee (Coffea arabica L.) population densities on the chemical and microbiological properties of an Oxisol. The work was carried out on soil samples of 0-20 cm depth originated from an experimental site which had been used for coffee tree spacing studies during 15 years, in Paraná State, Brazil. Eight coffee tree populations were evaluated: 7143, 3571, 2381, 1786, 1429, 1190, 1020, and 893 trees/ha. Increasing plant population increased soil pH, exchangeable Ca, Mg, K, extractable P, organic carbon, moisture content and coffee root colonization by vesicular arbuscular mycorrhizal fungi, and decreased exchangeable Al and microbial biomass. Such results were attributed to better erosion control,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Acid soil; Tree spacing. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000300018 |
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| Androcioli Filho,Armando; Caramori,Paulo Henrique. |
| Frost damages in a field experiment of pruning types and systems for the cultivars of Coffea arabica Catuaí and Mundo Novo, were evaluated at Londrina (23º22S, 52º10´W), State of Parana, southern Brazil, during the winter of 1990 and 1994. Pruning types evaluated were esqueletamento (cutting off all plagiotropic branches at 20-30 cm from the orthotropic branch), decote (cutting off the orthotropic branch at 1.5 m and 2.0 m above ground) and recepa (cutting off the orthotropic branch at 0.8 m above ground), performed on all rows and on alternate rows, and on different sections of the plant. Results indicated that frost damage could increase according to the type and height of pruning. The pruning type esqueletamento and prunings at higher levels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pruning; Coffea arabica; Coffee cultivars; Frost. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000100006 |
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| Sera,Gustavo Hiroshi; Sera,Tumoru; Altéia,Marcos Zorzenom; Androcioli Filho,Armando; Azevedo,José Alves de; Petek,Marcos Rafael; Ito,Dhalton Shiguer. |
| A bacteriose causada pela Pseudomonas syringae pv. garcae provoca grandes prejuízos em algumas regiões da cafeicultura brasileira, como Paraná, São Paulo e Minas Gerais, principalmente em lavouras novas, podadas e expostas ao vento. Com este trabalho, objetivou-se estudar nas plantas F2 do cruzamento entre os genótipos IAPAR-59 e Catuaí Erecta a associação entre as características vigor vegetativo e ângulos de inserção das ramificações plagiotrópicas sobre a intensidade de ocorrência da bacteriose. Avaliaram-se, em outubro de 2001, 316 plantas F2 plantadas no IAPAR de Londrina em outubro de 1998. A escala de notas de avaliação da incidência de bacteriose adotada foi de 1 a 5, sendo 1 = plantas sem lesão e 5 = plantas com muitas lesões. As notas de vigor... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cultura do café; Melhoramento; Cultivares; Mancha aureolada do cafeeiro; Bacteriose; Coffea arabica. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000500002 |
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