تبلیغات
 
 
شال ترنج - Fire blight

Fire blight

نویسنده : محسن عقیلی دوشنبه 26 اسفند 1387 04:40 ق.ظ  •  دیدگاه ها : ()  

این هم دومین مقاله به زبان انگلیسی که در مورد بیماری آتشک که از مهمترین بیماریهای باغی هستش توضیح میده..

?What is Fire blight

Fire blight is a destructive bacterial disease of apple and pear, recognized by a severe blighting of blossoms, shoots, limbs and fruit. It also affects several ornamentals in the same family such as hawthorn, mountain ash, cotoneaster, quince and firethorn. Outbreaks of fire blight occur periodically in British Columbia pear orchards. Fire blight has also been an increasing problem in high density apple plantings of newer, more susceptible varieties.

 5487Shoot blight on young Fuji apple. Note shepherd's crook and browning of leaves at end of shoot.

:Symptoms

Fire blight symptoms may appear on the blossoms, shoots, branches, trunk and rootstock. Blighted blossoms appear wilted, shriveled and brown. Young fruitlets are also very susceptible and appear water soaked and slightly off-colour soon after infection. Fruitlets quickly turn brown to black and eventually

مشاهده کامل موضوع در ادامه مطلب


منبع:
http://takestan.mihanblog.com

آخرین ویرایش: - -

 
لبخندناراحتچشمک
نیشخندبغلسوال
قلبخجالتزبان
ماچتعجبعصبانی
عینکشیطانگریه
خندهقهقههخداحافظ
سبزقهرهورا
دستگلتفکر