Produção Nacional
Efeitos de práticas culturais e de inseticidas sobre pragas do arroz de sequeiro
1996; SciELO; Volume: 25; Issue: 1 Linguagem: Inglês
10.37486/0301-8059.v25i1.1101
ISSN1981-5328
AutoresEvane Ferreira, J. Kluthcouski, Pedro Marques da Silveira, A. B. dos Santos,
Tópico(s)Rice Cultivation and Yield Improvement
ResumoThe effccts of cultural practices upon termites and stem borer pests of upland rice yicld was studicd.Saniples were taken in thrce experiments carricd out in Goiás Siate, one in Jussara and two in Santo António de Goiás counhies.AI Jussara, the influence of soil tillagc methods on Diairaca sacclwralis (F.) damage was evaluatcd at harvest.The effects of soil tillage niethods and type of rice cultivation (single and intercroppcd with calopogonio) on the damage caused to nec hy Procorniterines iriacifer(Silvestri) were evaluated 33 days after sowing.The clïects of insecticides secd Ireatment singly or mixed with fungicides.and soil tiliage rnethods, on termite infestation and damage.were asscscd at 30 and 78 days after sowing.There were significant clifferences among Ircatments with regard to percentage of culms attacked hy insects.The damage caused hy D.saccharalis was higher in the moldhoard ploughed soil than in disked or no-tillage soil; the auack by P. triacijer was higher in the moldhoard ploughed soil when rice was cultivated as a single crop: termite clamage 30 days after sowing was significantly less in carbofuran than in carbosulfan Ireatment.which did not differ from the chcck.The number of termites liter at the rhizosphere 78 days after sowing, was negatively correlated (P < 0.05) with the grain yield.The nuniber of termites liter of soil, was 6.9 in the disked soil and 1.5 in the moldhoard ploughed soil.resulting in decreased grain yiekl hy 17.1 and 3.41/(,.respectively.
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