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Paper Information

Journal:   RESEARCH BULLETIN OF ISFAHAN UNIVERSITY (HUMANITIES)   2007 , Volume 22 , Number 1; Page(s) 171 To 182.
 
Paper: 

PREDICTING BUD BREAK TIME IN APPLE TREES BY USING CHILL ACCUMULATION REQUIREMENT MODEL TO PREVENT FROST DAMAGE IN NORTHEAST OF IRAN

 
 
Author(s):  KAMALI GH.A., RAHIMI M., MOHAMMADIAN N., MAHDAVIAN A.R.
 
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Abstract: 

The bud break phase of orchard trees is the most critical phase to climatic condition especially low temperature and frost. Therefore predicting the time of bud break is very important. If a model can predict the date of budding, it would be possible to protect buds from the spring late frost.  Bud break for deciduous fruit trees such as Apple mainly depend on air temperature and its variation during the winter season. The exposure to a particular duration of cold temperature is needed to release dormancy followed by a spring growth. This study was performed in Golmakan region in Northeast of Iran during years 1999 to 2004. In this research the budding date of apple trees was predicted for spring of 2005 at 24th March in Northeast of Iran. Also the hazard of late frost on has been estimated as 67% after this date. This is pretty high risk for apple trees buds and it is necessary growers to protect their gardens from frost injuries.

 
Keyword(s): CHILL ACCUMULATION REQUIREMENT, CHILL DAYS, BUD BREAK, LATE FROST, IRAN, APPLE TREE
 
References: 
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