scholarly journals Disease threshold for cherry leaf spot incidence on commercial sweet cherry cultivars

2019 ◽  
Vol 25 (1-2) ◽  
Author(s):  
M. Varga ◽  
A. Vámos ◽  
B. Molnár ◽  
I. J. Holb
Keyword(s):  
Leaf Spot ◽  
Sweet Cherry ◽  
Disease Incidence ◽  
Threshold Level ◽  
Training System ◽  
Training Systems ◽  
Cherry Leaf Spot ◽  
Leaf Infection ◽  
Disease Threshold ◽  
Sweet Cherry Cultivars

The aim of this study was to demonstrate the 10% threshold level for cherry leaf spot incidence on 23 commercial sweet cherry cultivars in two training systems. Twenty three cherry cultivars were evaluated in the two training systems with a spacing of 4 x 1 m and with a spacing of 2 x 5 m. Results showed that leaves of many cultivars were heavily infected, e.g. cultivars (cvs) ’Biggareau Burlat’, ’Sunburst’, while others showed low disease incidence e.g. cvs ’Celeste’ and ’Blaze Star’. According to the 10 % threshold level, cv ’Celeste’ proved to be the most resistant cultivar to leaf infection, while cv ’Münchebergi korai’ exceeded extremely the 10% threshold level. Leaf spot incidence was affected by training system on most cultivars. Thirteen cultivars had less than 10% infection in the 4 x 1 m spacing (i.e. they did not reach the 10% disease threshold level). At the same time, only 3 cultivars showed less than 10% infection in the 5 x 2 m spacing.

scholarly journals Cherry leaf spot incidence on 12 sweet cherry cultivars in integrated production

2013 ◽  
Vol 19 (1-2) ◽  
Author(s):  
A. Vámos ◽  
I. J. Holb
Keyword(s):  
Leaf Spot ◽  
Sweet Cherry ◽  
Disease Incidence ◽  
Integrated Production ◽  
Cherry Leaf Spot ◽  
Sweet Cherry Cultivars

The aim of this study was to evaluate the cherry leaf spot (CLS) incidence on 12 sweet cherry cultivars in integrated sweet cherry production in three consecutive years from 2010 till 2012. Assessed cultivars (cvs.) were ’Aida’, ’Axel’, ’Biggareau burlat’, ’Blaze Star’, ’Celeste’, ’Germersdorfi 3’, ’Izabella’, ’Katalin’, ’Krupnoplodnaja’, ’Linda’, ’Sunburst’, ’Vera’Results showed that year had an essential effect on the CLS disease incidence. Cultivars showed great differences within years. Cultivar ’Celeste’ showed the lowest disease incidence on leaves in all years lower than 10%. The largest disease incidence on leaves was on cv. ’Sunburst’ in 2010, on cv. ’Germersdorfi 3’in 2011 and on cv. ’Axel’ in 2012. Disease incidence on these cultivars ranged between 10 and 25%.

scholarly journals Some biological properties of new sweet cherry cultivars in Bulgaria and their susceptibility to Blumeriella jaapii

2007 ◽  
Vol 13 (3) ◽  
Author(s):  
M. Borovinova ◽  
N. Christov ◽  
J. Nyéki
Keyword(s):  
Leaf Spot ◽  
Sweet Cherry ◽  
Biological Properties ◽  
Late Spring ◽  
Spring Frost ◽  
Blumeriella Jaapii ◽  
Cherry Leaf Spot ◽  
Late Spring Frost ◽  
Sweet Cherry Cultivars ◽  
Fruit Mass

Investigations were made on 12 sweet cherry cultivars (‘13-S-22-8’, 'Sunburst', `Kozerska'., 'NY 13791', 'Royalton', 'NY 13688', 'Hartland', `Sumerset', 'Pollax', 'Patriotka Krima', 'Castor', and `Lapins') in an experimental orchard of cherry cultivar collection in the Institute of Agriculture at Kyustendil, Bulgaria during the period of 1997-2003. The trees were planted in 1996. All cultivars were grafted on Prunus mahaleb. Four biological properties of the cultivars were assessed such as blooming time, resistance to late spring frost, fruit ripening and fruit mass. Among cultivars, a good resistance to late spring frost was observed on cultivar 'Sunburst'. The fruit mass varied between 4.2 g (cv. 'Patriotka Krima') and 8.5 g (cv. `Sunburst'). The susceptibility of the cherry cultivars to cherry leaf spot caused by Blumeriella jaapii was assessed in mid-September in each year. The estimation of the rate of attack was made according to the grade of Townsend and Neuberger. All cultivars showed symptoms of cherry leaf spot but the degree of susceptibility was different. Cultivar `Patriotka Krima' was the least susceptible, while cultivar `Somerset' was the most susceptible to Blumeriella jaapii.

Functional state of the new sweet cherry (Cerasus avium L.) cultivars trees leaves photosynthetic apparatus in the Ukraine’s Lisosteppe

2020 ◽  
pp. 102-110
Author(s):  
V.I. Vasylenko ◽  
◽  
N.V. Moiseichenko ◽  
O.I. Kytaiev ◽  
V.V. Grusha ◽  
...  
Keyword(s):  
Sweet Cherry ◽  
Photosynthetic Apparatus ◽  
Threshold Level ◽  
Climatic Conditions ◽  
Efficiency Coefficient ◽  
Potential Productivity ◽  
Growing Conditions ◽  
Adaptation Processes ◽  
Sweet Cherry Cultivars ◽  
Kinetics Of

The authors present the results of studying the adaptation processes of the sweet cherry cultivars to the soil and climatic conditions of the region. The adaptation makes it possible to select the best cvs. The kinetics of the changes in the chlorophyll induction fluorescence was measured on the leaves of the trees of the 10 sweet cherry introduced varieties using the instrument Floratest. The control cultivar was Nizhnist, as high adapted to the environmental conditions despite the young trees age the significant potential productivity of cv Pikovaia Dama has been established. The plateau coefficient has appeared not to exceed the threshold level (0.45), that is a sign of the viral infection absence in the trees. The correlation was also established between the efficiency coefficient of the electronic transport and productivity at a level of 0.53. That indicates the evident influence the of leaf chloroplasts functioning intensity and the sweet cherry plants productivity. The results of the three-year study characterize sweet cherry as one of the adapted crops to the growing conditions. As a result, the best in comparison with the control variety Tenderness were highlighted by the Balovnitsa, Viesiennie Napievy and Pikovaia Dama have been selected as the best cultivars in comparison with control cv Nizhnist.

Aetiology of peach and sweet cherry leaf spot and twig canker in Montenegro

2021 ◽  
pp. 319-326
Author(s):  
T. Popović ◽  
J. Menković ◽  
A. Prokić ◽  
A. Obradović
Keyword(s):  
Leaf Spot ◽  
Sweet Cherry ◽  
Cherry Leaf Spot

scholarly journals The Effects of Rootstocks and Training Systems on the Early Performance of ‘0900 Ziraat’ Sweet Cherry

2016 ◽  
Vol 44 (2) ◽  
pp. 573-578 ◽  
Author(s):  
Erdal AGLAR ◽  
Kenan YILDIZ ◽  
Lynn Edwards LONG
Keyword(s):  
Sweet Cherry ◽  
Tree Height ◽  
Fruit Weight ◽  
Training System ◽  
Cumulative Yield ◽  
Yield Efficiency ◽  
Training Systems ◽  
Leader Training ◽  
Early Performance ◽  
And Training

The effects of three rootstocks (‘Gisela 5’, ‘Gisela 6’ and ‘MaxMa 14’) and three training systems (Spanish bush, Steep leader and Vogel central leader) on early performance of ‘0900 Ziraat’ sweet cherry were compared. There have been significant differences among both rootstocks and training systems in terms of tree heights. At the end of the fourth year, while the height of the trees grafted on ‘Gisela 5’ was 238.3 cm, those grafted on ‘MaxMa 14’ reached 266.4 cm in height. While the shortest tree height was obtained from Spanish bush system, heights of the trees in Steep leader and Vogel central leader training systems were found to be at similar levels. ‘Gisela’ 5 had lower trunk cross section area (TCSA) than ‘Gisela 6’ and ‘MaxMa 14’ rootstocks. Among three systems, trees trained to Steep leader had the highest TCSA, followed by Spanish bush and Vogel central leader. Interactions were found between rootstock and training system for yield and yield efficiency. On ‘Gisela 6’, cumulative yield of Vogel central leader system (17.0 g/tree) was significantly higher than Spanish bush (14.8 g/tree) and Steep leader (12.6 g/tree). On the other hand, on ‘MaxMa 14’, there were not significant differences in cumulative yield per tree among training systems. On ‘Gisela 5’ and ‘Gisela 6’, the highest yield efficiency were observed in trees trained as Vogel central leader. Yield efficiency of Vogel central leader (0.49 kg cm-²) was two time higher than those of Spanish bush (0.29 kg cm-²) and Steep leader (0.26 kg cm-²) on ‘Gisela 6’. The weight of fruits from trees grafted on ‘Gisela 5’ was lower than those from trees on ‘Gisela 6’ and ‘MaxMa 14’. In the fourth year, while the average fruit weight was 5.86 g on ‘Gisela 5’, it was 6.00 and 6.25 g on ‘Gisela 6’ and ‘MaxMa 14’ rootstocks respectively.

scholarly journals New Training Systems for High-density Planting of Sweet Cherry

HortScience ◽  
2015 ◽  
Vol 50 (1) ◽  
pp. 59-67 ◽  
Author(s):  
Stefano Musacchi ◽  
Federico Gagliardi ◽  
Sara Serra
Keyword(s):  
Vegetative Growth ◽  
Sweet Cherry ◽  
Growth Yield ◽  
Fruit Production ◽  
High Density ◽  
Cumulative Yield ◽  
Cross Sectional ◽  
Training Systems ◽  
Production Behavior ◽  
Sweet Cherry Cultivars

We assessed the vegetative growth and fruit production behavior of different sweet cherry cultivars grown using multiple new ultra-high-density planting (HDP) and training systems. An experimental orchard established in 2007 in the Ferrara province of Italy was used for this trial. The sweet cherry cultivars under evaluation were ‘Giorgia’ and ‘Grace Star®’ grafted on Gisela® 6; and ‘Black Star®’, ‘Early Bigi®’, ‘Early Star®’, ‘Ferrovia’, ‘Grace Star®’, ‘Kordia’, ‘Regina’, ‘Summit’, ‘Sweet Early®’, and ‘Sylvia’ grafted on Gisela® 5 rootstock. Each cultivar–rootstock combination was trained to spindle, V-system, or Super Spindle Axis (SSA). Planting densities ranged from 1905 trees/ha for spindle with Gisela® 6 to 5714 trees/ha for V-system and SSA with Gisela® 5. Vegetative growth, yield productivity, and fruit quality were evaluated. Among the three systems grafted on Gisela® 5, trees trained to the spindle system had the highest trunk cross-sectional area (26.2 cm2), followed by V-system (21.8 cm2) and SSA (20.2 cm2). Seven years after planting, ‘Ferrovia’ had the highest cumulative yield per hectare among cultivars on Gisela® 5, especially with V-system (50.5 t·ha–1) and SSA (52.2 t·ha–1) training systems. For cultivars on Gisela® 6, ‘Giorgia’ on had the highest cumulative yield per hectare after 7 years, but ‘Grace Star®’ on had higher production (≈14.0 t·ha–1 with V-system and SSA and 12.8 t·ha–1 with spindle) than ‘Giorgia’ in 2013.

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