Soğuk ve Don

Site yapım aşamasında olup 2019 yılına kadar hazırlıklar devam edecektir.

 

 

 

https://lynnwoolf.wordpress.com/tag/wheat/

 

 

 

Kış ölümü (winter kill)

http://cropwatch.unl.edu/2015-wheat-winterkill

 

 

Soğuk zararı (cold damage)

http://plantsinaction.science.uq.edu.au/content/145-plant-responses-cold

 

Don zararı (freeze injury)

Genelde ilkbaharda oluşur.

http://extensionpublications.unl.edu/assets/pdf/ec132.pdf

http://agrilife.org/yoakumterryipm/files/2013/03/Freeze-Injury-on-Wheat.pdf

http://wheatdoctor.org/frost-damage

https://www.bookstore.ksre.ksu.edu/pubs/c646.pdf

 

Temperatures that cause freeze injury to wheat at spring growth stages and symptoms and yield effect of spring freeze injury.

Growth stage Appx. injurious temp. (2 hrs.) Primary symptoms Yield effect
Tilering 12 F (-11 C) Leaf chlorosis; burning of leaf tips; silage odor; blue cast to fields slight to moderate
Jointing 24 F (-4 C) Death of growing point; leaf yellowing or burning; lesions, splitting, or bending of lower stem; odor Moderate to severe
Boot 28 F (-2 C) Floret sterility; spike trapped in boot; damage to lower stem; leaf discoloration; odor Moderate to severe
Heading 30 F (-1 C) Floret sterility; white awns or white spikes; damage to lower stem; leaf discoloration Severe
Flowering 30 F (-1 C) Floret sterility; white awns or white spikes; damage to lower stem; leaf discoloration Severe
Milk 28 F (-2 C) White awns or white spikes; damage to lower stem; leaf discoloration; shrunken, roughened, or discolored kernels Moderate to severe
Dough 28 F (-2 C) Shriveled, discolored kernels; poor germination slight to moderate