Effect of Potassium Damping-off (Pythium sp and Rhizoctonia solani) and Cold Tolerance on Tobacco Seedlings

Authors

ÖZLEM GÜNGÖR

DOI

-

Abstract

Effect of Potassium on damping off tobacco caused by Pythium sp and Rhizoctonia solani were investigated by giving 10, 20, 30 kg/da (5, 10, 15 ppm) K_2SO_4 as K_2O base and pathogen inoculum at the same time at green house experiments. Potassium application did not present disease development at all three rates, but at the rate of 20 kg/da K_2O there were a slight seedling cover of 13,75% and 3,75% for Pythium sp. and R.solani especially. Potassium at the rate of 10 kg/da prevented cold shock of tobacco seedlings at 3-5°C but at higher rates this effect was not obsenced Potassium did nat protect the at seedlings against low temperatures 1-5-(-9) °C.

First Page

843

Last Page

848

Recommended Citation

GÜNGÖR, ÖZLEM (1999) "Effect of Potassium Damping-off (Pythium sp and Rhizoctonia solani) and Cold Tolerance on Tobacco Seedlings," Turkish Journal of Agriculture and Forestry: Vol. 23: No. 10, Article 9. Available at: https://journals.tubitak.gov.tr/agriculture/vol23/iss10/9