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Paper Information

Journal:   PAJOUHESH-VA-SAZANDEGI   FALL 2008 , Volume 21 , Number 3 (80 IN AGRONOMY AND HORTICULTURE); Page(s) 138 To 143.
 
Paper: 

EFFECT OF PRUNING TIME AND PACLOBUTRAZOLE APPLICATION ON BUD BURST DELAYING OF VITIS VINIFERA CV. SEFID BIDANEH IN ORDER TO REDUCE OF SPRING COLD DAMAGE

 
 
Author(s):  MAHMOUDZADEH H.*, RASOOLI V., DOLATI BANEH H.
 
* AGRICULTURAL AND NATURAL RESOURCES RESEARCH CENTER OF WEST AZARBIJAN
 
Abstract: 

An experiment was conducted in order to study the effects of pruning time and Paclobutrazole on grape bud burst time to reduce spring cold damage in vineyards. Research was done in complete randomized block design (4 replications). Five ungrafted seven years old grapevines were selected per plot. The treatments were local pruning time as control, Paclobutrazole application (1000ppm), pruning after bud burst and Paclobutrazole application (1000ppm) with pruning after bud burst. Date of bud burst, Delaying of Bud burst, spring cold damage of shoots, yield and quantities characteristics of fruit and raisin were determined. Statistical analysis and mean comparison were done by SPSS software and Duncan’s multiple rang test methods, respectively. Results showed all treatments caused delaying in bud burst (8-14 days) in comparison with control (P<5%). Application of Paclobutrazole at delay pruning caused 13.36 days delay in bud burst. Also, yield and weight of raisin increased 36 and 24% compared with control, respectively. Spring cold damage reduced to 1% in comparison control (14%). Treatments showed no significant differences in TSS of fruit. Control had lowest rate TA (726 mg/L). TSS/TA was highest in Paclobutrazole application (24.95).

 
Keyword(s): GRAPEVINE, SPRING COLD DAMAGE, PACLOBUTRAZOLE
 
References: 
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