Training system and tree-age affect leaf spot epidemics and tree defoliation on commercial sweet cherry cultivars

Vámos, Alex; Holb, I. J.

doi:10.1016/j.cropro.2019.104881

Cited by 2 publications

(4 citation statements)

References 33 publications

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“…Our results were in contrast with the study of Vámos and Holb [ 24 ] on sweet cherry vs. leaf spot pathosystems, as leaf spot incidences were lower in the higher density (4 × 1 m) orchard, compared to the lower density (5 × 2 m) one. Vámos and Holb [ 24 ] concluded that the depositions of spray droplets have better distribution within the tree canopy of the higher density orchard compared to the lower density one, which resulted in lower numbers of leaf spot infections during the season In this plum study, despite the larger trees being in the low (6 × 3 m) density training systems, they had a more open tree canopy (due to different pruning actions) compared to the high (4 × 1.5 m) density training system. This resulted in increasing sunlight penetration and air movement within the tree canopy of the low-density training system.…”

Section: Discussioncontrasting

confidence: 99%

“…‘Bluefre’ ( Table 5 and Table 6 ; Figure 5 ). The effect of training systems on annual SHD progress was not previously evaluated in stone fruit orchards, but on similar diseases (such as leaf spot, which causes early leaf defoliation) that were studied in sweet cherry orchards [ 24 ]. Our results were in contrast with the study of Vámos and Holb [ 24 ] on sweet cherry vs. leaf spot pathosystems, as leaf spot incidences were lower in the higher density (4 × 1 m) orchard, compared to the lower density (5 × 2 m) one.…”

Section: Discussionmentioning

confidence: 99%

“…The effect of training systems on annual SHD progress was not previously evaluated in stone fruit orchards, but on similar diseases (such as leaf spot, which causes early leaf defoliation) that were studied in sweet cherry orchards [ 24 ]. Our results were in contrast with the study of Vámos and Holb [ 24 ] on sweet cherry vs. leaf spot pathosystems, as leaf spot incidences were lower in the higher density (4 × 1 m) orchard, compared to the lower density (5 × 2 m) one. Vámos and Holb [ 24 ] concluded that the depositions of spray droplets have better distribution within the tree canopy of the higher density orchard compared to the lower density one, which resulted in lower numbers of leaf spot infections during the season In this plum study, despite the larger trees being in the low (6 × 3 m) density training systems, they had a more open tree canopy (due to different pruning actions) compared to the high (4 × 1.5 m) density training system.…”

Section: Discussionmentioning

confidence: 99%

“…This is especially essential for the foliar fungal diseases of fruit tree species as they cause early defoliations and, therefore, successful disease control is essential not only for annual yield but for the lifespan of the tree. The temporal progress of the foliar fungal diseases of fruit tree species were investigated; for instance, for cherry vs. leaf spot [ 24 ] and peach vs. shot hole pathosystems [ 25 ]. However, detailed temporal disease progress was not performed for SHD on plum cultivars under various training systems.…”

Section: Introductionmentioning

confidence: 99%

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Temporal Dynamics of Incidence of Shot Hole Disease Affected by Training Systems and Cultivar Susceptibilities in an Integrated Plum Orchard

Molnár

Szabó

Holb

2022

JoF

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Shot hole disease (SHD) can cause severe epidemics in plum orchards, depending on cultivar susceptibility and training system; however, the combined effect on the progress of temporal disease and on the possible reduction in SHD in the disease management was not investigated. The aim of this 3-year study was (i) to monitor and analyze the temporal dynamics of SHD progress under four training systems (4 × 1.5, 4 × 2, 5 × 2.5 and 6 × 3 m) and on four plum cultivars (‘Čačanska lepotica’, ‘Bluefre’, ‘Stanley’ and ‘President’) in an integrated plum orchard; (ii) to identify those time periods when training system and cultivar combinations can reduce the disease development. Both SHD incidences and the area under the disease progress curves (AUDPC) were significantly affected by the training system, cultivar and year. Plum cultivars with high or mid–high susceptibility to SHD showed continuous SHD development from May to November, while cultivars with low susceptibility to SHD showed no symptoms until mid-summer and then progressed slowly until November. High (4 × 1.5 m) vs. low (6 × 3 m) density training systems reduced SHD incidence and AUDPC consistently for three cultivars (‘Čačanska lepotica’, ‘Stanley’ and ‘President’) in September, October and November, compared to the high-density training system. Only cv. ‘Bluefre’ showed no effect either on disease incidence or AUDPC, due to very high disease incidences in all training systems from September to November. In conclusions, combinations of training system and cultivar can significantly reduce SHD incidence, which may be successfully used as a part of the integrated pest management approach during the establishment new plantations.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%