Pythium Control

Patricio FRA, Kimati H, Tessarioli Neto J, Petenatti A, Barros BC (2007) Efeito da solarizagao, associada a aplicagao de Trichoderma spp. Ou fungicidas, sobre o controle de Pythium aphanidermatum e de Khizoctoriia solani AG-4. Summa Phytopathol 33 142-146. doi 10.1590/ S0100-54052007000200007... 

Bastiaansen, M.G., Pieroh, E.A., and Aelbers, E. 1974. Prothiocarb, a new fungicide to control Phytophthora fragariae in strawberries and Pythium ultimum in flower bulbs. Meded. Fac. Landbouwwet. Rijksuniv. Gent 39, 1019-1025. 

Uses as fungicide applied to soil or used as seed treatment for control of seedling diseases of beans, cotton, soybeans, and beet also used for control of snow mold (Typhula spp.) and Pythium blight on turf grass. 

Chemical Name 5-ethoxy-3-(trichloromethyl)-l,2,4-thiadiazole ethyl 3-trichloromethyl-l,2,4-thiadiazolyl ether Uses as fungicide for control of Phytophthora and Pythium spp. in cotton, ornamentals, vegetables, groundnuts, cucurbits, tomatoes, and other crops also used as a nitrification inhibitor in maize, cotton and wheat. 

Figure 5. Rate of colonization of entire root systems of 2-week old wheat seedlings by Pythium or Fusarium spp. Plants treated with 2 ig of glyphosate were compared with control plants (O —). The plants were grown at 25C, in either mineral or organic soils adjusted daily to field capacity (-0.06 Bar).

Hoch and Abawi (2) reported the biological control of Pythium ultimum root rot of table beets (Beta vulgaris) by L. arvalis, but also reported that while effectively controlling damping off disease, it was not pathogenic to P. ultimum. In dual cultures of P. ultimum and L. arvalis... 

Diseases caused by Phytophthora and Pythium spp. resemble closely in their development those caused by Rhizoctonia solani, and in general experiments on control have yielded similar results. Many soil organisms are antagonistic to these pathogens but seldom are they effective except in laboratory or sterilized soil cultures. 

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