Paper Information

Journal:   JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH   FALL 2006 , Volume 7 , Number 28; Page(s) 41 To 52.
 
Paper: 

EVALUATION OF FROSTPRO MODEL FOR FROST PROTECTION OF PEACH ORCHARD BY SPRINKLER IRRIGATION

 
 
Author(s):  GHAEMI A.A., RAFIEI MOHAMMAD RAFI, SEPASKHAH ALI REZA
 
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Abstract: 

Man has long attemped to control the environment according to his needs. One of the phenamena with which he has always encoutered for this control is the frost damage of crops. A usefull method to protect the plant from frost is sprinkler irrigation which is based on the heat released from the formation of ice on the sprinkled plant limbs. To evaluate this method, an automated overtree sprinkler irrigation system was designed and tested on a 1700 m2 peach orchard block in Badjgah area (Fars province) to protect peach buds from low temperature damages. An adjucent 1000 m2 block was left unprotected as the control block. Achieving a good management is of the most importance in applying irrigation systems to protect plant from frost. FROTPRO, a mathematical model developed to predict proper application rates to adequately protect plants, was used in this research. The irrigation system was designed in order to supply the application rate predicted by the model using the proper climate data from the region. The system was evaluated during three frost events in spring 1382 and could successfully keep the bud temperatures above the adjusted critical level (-1.5oC) during all spring frost events. On the other hand, the flowers were lost 12 and 41.5% for protected and control orchards, respectively. Furthermore, 36% more fruit yield per tree was obtained for protected trees. The results indicated that the designed and managed sprinkler system by using FROSTPRO model was effective to protect the peach orchard in the study area.

 
Keyword(s): APPLICATION RATE, AUTOMATED SPRINKLER IRRIGATION SYSTEM, BUD, FROSTPRO MODEL, FROST PROTECTION, TEMPERATURE
 
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