The behavior of some peach and nectarine cultivars to Leaf curl peach (Taphrina deformans (berk.) tul. in Albania

The McKinney index (Imc) was obtained by using the following formula: where: DI (Imc) % = the total degree of infection; n= infection class frequencies; v = the category of infection (0-4); N = total of observed plants; X = highest value of the evaluation scale Statistical Date Analysis: The statist...

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Bibliographic Details
Published in:Albanian journal of agricultural sciences 2017-01, p.547-551
Main Authors: Toca, Hajredin, Vrapi, Hekuran, Ruci, Thanas
Format: Article
Language:English
Subjects:
Cultivars
Deformation
Design of experiments
Disease control
Fruits
Infections
Plant diseases
Prunus persica nucipersica
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Summary:The McKinney index (Imc) was obtained by using the following formula: where: DI (Imc) % = the total degree of infection; n= infection class frequencies; v = the category of infection (0-4); N = total of observed plants; X = highest value of the evaluation scale Statistical Date Analysis: The statistical data analysis: all data processing for this study period, averages, variance and standard deviation are calculated with statistical program Assistat 2016, Version 7.7 [7] and for comparison of averages of the disease severity index is performed with TukeyKramer test and additional comparison of levels with control tree's is performed with Dunnett's test by using the statistical program SAS 2009 University edition [9]. From the experimental data we are studying table 2 , we conclude that the effects of 2 factors in the study as Factor A = Cultivars with 4 levels (cultivars = Red Star, Venus, Royal Black and Gomea) and Factor B = 3 levels of treatment methods (treatment Biological, Chemical treatment and Control) showed significant differences statistically higher level of truth (p = 99%). Conclusions The analysis of the data noted that the weather was suitable for the development of leaf curl (Taphrina deformans), disease by mid-March and grace in May is seen and physiological stages of peach plant which has come to three years of study stages of her treatment at the time of swelling buds, at different times For the disease index: (Taphrina deformans), We see that the disease index (Imc in%) during the three years of study ranges from 4:22% in cultivar rubber and arrives at 8:22% in cultivar Red Star in the chemical treatment method, compared it with the very high level of infection control which ranges from 40.66% in cultivar Roajal Black and up to 43.66% in cultivar rubber., satisfactory results were observed in the biological treatment method where the disease index ranges 5. [...]edition.
ISSN:2218-2020