Métodos de avaliação da incidência de cercosporiose em cultura de amendoim (Arachis hypogaea L.)

Methods of avaliation of incidence of Cercospora spp. on peanut fields

NOTA

Métodos de avaliação da incidência de cercosporiose em cultura de amendoim (Arachis hypogaea L.)^1,2

Methods of avaliation of incidence of Cercospora spp. on peanut fields

Jaciro Soave; Ivan José Antunes Ribeiro; Osvaldo Paradela Filho; Toshio Ioue³

SUMMARY

Four methods were tried: 1) number of spots in the whole leaves of the principal stem of 20 randomized plants; 2) number of all the leaves that have presented one or more spots, in the principal stem of 20 randomized plants; 3) number of spots per leaf; 4) number of leaves lost by the principal stem of 20 randomized plants.

Tere was high correlation among the number of spots, number os spots per leaf and number of lost leaves.

There was no correlation between the number of leaves with spots and number of lost leaves.

The more easy and efficient method was given by the number of lost leaves observed in the principal stem of the peanut plant.

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Recebida para publicação em 28 de dezembro de 1973.

1

Apresentada na IV Reunião Anual da Sociedade Brasileira de Fitopatologia, Piracicaba, fevereiro de 1971.

2

Trabalho parcialmente subvencionado pela FAPESP.

3

Com bolsas de suplementacão do CNPq.

Datas de Publicação

• Publicação nesta coleção
  10 Mar 2009
• Data do Fascículo
  1974