Showing 2 results for Humidity
Mehdi Sadravi,
Volume 3, Issue 1 (3-2014)
Abstract
Yellow rust is a major disease of wheat in Iran. Airborne spores fungal pathogen are the primary source of contamination. Temperature, humidity, wind intensity and direction, reaction of growing cultivars to the disease, presence of wheat in summer, planting time and nutritional status of wheat are effective factors in epidemy of the disease. The importance of the disease in the world, symptoms of the disease , effective factors in disease spread, forecasting model and its administrative procedures, and suitable fungicides to control the disease have been described .
Mehdi Sadravi, Marzie Tavakoli,
Volume 3, Issue 2 (9-2014)
Abstract
Downy mildew, caused by Pseudoperonospora cubensis, is the most important disease of cucumber production in humid areas and greenhouses in Iran. The yield loss of cucumber due to downy mildew may reach to 100%. Because the chemical control is the main method of disease control, especially in susceptible cultivars, establishing a forecasting program which is based on estimation of pathogen population, recording the temperature and relative humidity of field and greenhouse, can reduce the risk of disease epidemic. So by proper application of a protective or systemic fungicide can reduce the disease incidence, production costs and the most important, the amount of fungicide residue.
