Severity of infection by Pythium aphanidermatum and growth reduction in tomato under two radiation intensities.
Tomato plants were grown in containers with aerated nutrient solution in a climate chamber at daily photosynthetic active radiation of 8 or 16 mol m(-2), and inoculated with 0, 10(3) or 10(6) oospores of Pythium aphanidermatum per 1 of nutrient solution. Inoculum density affected propagule numbers of P. aphanidermatum both in the roots as well as in the nutrient solution. However, only the high inoculum density resulted in diminished tomato growth. No indication that radiation affected the intensity of the Pythium disease was observed.
Panova, G.G.; Grote, D.; Kläring, H.-P. 2004. Severity of infection by Pythium aphanidermatum and growth reduction in tomato under two radiation intensities. Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz 111 (5),516-519.