Yellow rust is one of the most dangerous diseases of cereals in Iran and is more common than other wheat rusts.
The other name of the disease is tape .
This disease was first identified in Iran by Esfandiari in 1326, but it has definitely been prevalent in the country before this date. he does.
Symptoms:
yellow rust usually appears early in the spring . the symptoms of the disease occur primarily on young adults as rash or yellow or orange , with a diameter of half a mm . after joining in the form of lines or ribbons along the midrib the disease has started from low birth and spread to a high prevalence . furthermore , the axis of the cluster , legumes , legumes and legumes is sometimes infected . infected ears of small and wrinkled grains produced such seeds without starch and non – starch .
cause of disease:
Puccinia srtriiformis is the agent of the yellow bell . یورد ینیوسپور or spring هاگهای are the single , rounded or short – shaped bell , whose surface has delicate thorns , and 4 – 8 sharp holes in the sides .
Control:
- Eraser Host Eradication: The purpose of this is to break the life cycle of the bells. This action is often not successful in combating the bells because firstly it is difficult to access the interface host at impassable heights of mountains or remote areas, secondly some bells winter Yordiniospores and mycelium pass through and soma spores rusts can be transmitted to farms from distant places and cause contamination.
- Use of resistant varieties: Using resistant cultivars is the best way to fight rusts. Unfortunately, the resistance of these cultivars breaks and becomes sensitive after several years of cultivation.
- Agricultural measures: Some agricultural measures reduce the damage of rusts, for example, avoiding excessive consumption of nitrogen fertilizers and early planting of spring wheat, reducing the frequency of irrigation, lack of intensive cultivation, etc. are effective in reducing the damage.
Chemical Control
The use of tabuconazole (EW) one liter per hectare as foliar application and propiconazole (Ec) half liter per hectare foliar application is recommended.
