Portal de Periódicos da CAPES

Efeitos de nematicidas fumigantes e não fumigantes no controle de Meloidogyne spp. em batata e cenoura.

2007; Volume: 31; Issue: 2 Linguagem: Inglês

0102-2997

J. M. Charchar, Jairo Vidal Vieira, V. R. Oliveira, A. W. Moita,

Cassava research and cyanide

Four fumigant (methyl bromide, metham sodium, dicloropropen-cloropicrin and dazomet) and three nonfumigant (aldicarb, carbofuran and fensulfotion) nematicides were applied in areas infested with a mixture population of Meloidogyne incognita race 1 and M. javanica, in the rainy season in the Federal District, Brazil. Following the nematicide application, four potato cultivars (Achat, Bintje, Delta-S and Desiree) and four carrot cultivars (Alvorada, Brasilia, Esplanada and Nova Kuroda) were planted on these areas for evaluation of the chemical product efficiencies based on nematodes reproduction factor (FR), yields of commercial potato tubers or carrot roots, and the percentages of commercial tuber or roots with infection by the nematodes. The fumigant nematicides methyl bromide, metham sodium and dicloropropen-cloropicrin controlled efficiently the nematodes on all potato and carrot varieties, considering that the reproduction factor (FR) of the nematodes were low, and there was no nematode infection on commercial potato tubers or carrot roots. The fumigant dazomet and the nonfumigant products controlled only partially the nematodes, since the values of nematodes FR and the percentages of commercial potato tubers or carrot roots infected by the nematodes were intermediate between the values obtained with the other fumigant nematicides and the control plot without nematicide application.