Comparison of Two Training Methods Applied to Apple Trees Trained to Slender Spindle During the First Years After Planting

Mészáros, Martin; Laňar, L.; Sus, Josef; Náměstek, J.

doi:10.11118/actaun201765041241

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…Similar results were obtained by Melnik and Kravtsova (2019) with the 'Gala' and 'Jonagold' cultivars. Mészáros et al (2017) reported increased specific productivity per stem cross-sectional area and total shoot length as a result of summer pruning.…”

Section: Resultsmentioning

confidence: 99%

The Growth Activity and Productivity of Apple Trees Depending on the Form of the Crown and the Time of Pruning

Chaploutskyi,

Polunina,

Kucher

et al. 2023

Journal of Horticultural Research

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The apple tree is the most common fruit crop in the temperate climate zone. Modern intensive fruit cultivation involves the use of new, highly productive cultivars and cultivation technologies, thanks to the creation of small crown shapes with an increased number of trees per hectare. Reducing planting patterns and creating more dense plantation systems can significantly improve their yields. However, the limiting factor that can reduce tree productivity and deteriorate fruit quality is the degree of crown illumination. Ensuring even access of sunlight to all parts of the crown is the main task in the formation and pruning trees. The study aimed to determine the effect of crown pruning at BBCH 0 (winter) and BBCH 74 (early summer) and various types of crown formation on the growth activity and productivity of ‘Fuji’ and ‘Honeycrisp’ apple trees. A significant decrease (20%) in the number of newly formed shoots in the form of the French axis crown compared to the ballerina and slender spindle crowns was found. However, their length and total growth were significantly higher. The formation of the ballerina crown (with the removal of overgrown wood in the 25 cm zone on the central conductor above the lower tier of semi-cross-branched branches) contributed to a decrease in shoot length and total growth. The introduction of crown pruning in the summer also improved crown illumination – shoot length decreased by 17% and total growth by 12%. Specific productivity per bole cross-section and total shoot length was the highest in ballerina crown trees, followed by trees with a slender spindle crown, and trees pruned in winter and summer.

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Section: Resultsmentioning

confidence: 99%

The Growth Activity and Productivity of Apple Trees Depending on the Form of the Crown and the Time of Pruning

Chaploutskyi,

Polunina,

Kucher

et al. 2023

Journal of Horticultural Research

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“…In apple cv. Topaz grafted on M9 rootstock, trees trained as modified slender spindle had lower canopy volume compared to slender spindle and demonstrated better tree size control (Mészáros et al, 2017). Trees of cherry cv.…”

Section: Pruning and Trainingmentioning

confidence: 99%

Dwarfism in Fruit Plants: A Review

Warang¹,

Gawas²

2023

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In this modern era, farmers are adopting high density planting (HDP) for most of the fruit crops. Dwarfing is based on the principle of making the optimal use of vertical and horizontal space per unit time and harnessing the highest potential returns per unit of inputs and natural resources. Dwarfing in fruit crops can be accomplished through a variety of methods, including the use of dwarfing rootstock, the selection of spur type scion cultivars, use of interstock, pruning, root pruning, various training systems, girdling, scoring, bark invasion and the application of growth retardants. One strategy for promoting early fruiting, less vigour and increasing production is to utilize dwarf root stocks. The mechanism underlying dwarfing involves anatomical, physiological and biochemical changes. It has been proposed that dwarfing rootstock or interstock control tree size by regulating the auxin that passes through the rootstock or interstock’s bark. Paclobutrazol retards growth, shoot elongation and reduced internodal length by inhibiting gibberellins synthesis. Dwarfness can be imparted by the using incompatible rootstock. Dwarfing can be induced by inducing viral infection, although, it is not commercially adopted. Recombinant DNA technology has recently expanded the gene pool that can be managed to cause dwarfism and maximize benefits in horticulture crops.

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“…Information perception studies have shown that the crown determines the growth and development of trees, which in turn affects their yield and economic benefits [2]. Canopy characteristics have important guiding significance for research related to trees, because they can usually be used for growth assessment [3], biomass estimation [4,5], pruning effect analysis [6], yield prediction [7], health assessment early disease detection [8,9] and in the use of plant protection products such as insecticides [10]. Fruit tree canopy characteristics include canopy height, width, and volume.…”

Section: Introductionmentioning

confidence: 99%

Canopy Parameter Estimation of Citrus grandis var. Longanyou Based on LiDAR 3D Point Clouds

et al. 2021

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The characteristic parameters of Citrus grandis var. Longanyou canopies are important when measuring yield and spraying pesticides. However, the feasibility of the canopy reconstruction method based on point clouds has not been confirmed with these canopies. Therefore, LiDAR point cloud data for C. grandis var. Longanyou were obtained to facilitate the management of groves of this species. Then, a cloth simulation filter and European clustering algorithm were used to realize individual canopy extraction. After calculating canopy height and width, canopy reconstruction and volume calculation were realized using six approaches: by a manual method and using five algorithms based on point clouds (convex hull, CH; convex hull by slices; voxel-based, VB; alpha-shape, AS; alpha-shape by slices, ASBS). ASBS is an innovative algorithm that combines AS with slices optimization, and can best approximate the actual canopy shape. Moreover, the CH algorithm had the shortest run time, and the R2 values of VCH, VVB, VAS, and VASBS algorithms were above 0.87. The volume with the highest accuracy was obtained from the ASBS algorithm, and the CH algorithm had the shortest computation time. In addition, a theoretical but preliminarily system suitable for the calculation of the canopy volume of C. grandis var. Longanyou was developed, which provides a theoretical reference for the efficient and accurate realization of future functional modules such as accurate plant protection, orchard obstacle avoidance, and biomass estimation.

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Comparison of Two Training Methods Applied to Apple Trees Trained to Slender Spindle During the First Years After Planting

Cited by 4 publications

References 12 publications

The Growth Activity and Productivity of Apple Trees Depending on the Form of the Crown and the Time of Pruning

The Growth Activity and Productivity of Apple Trees Depending on the Form of the Crown and the Time of Pruning

Dwarfism in Fruit Plants: A Review

Canopy Parameter Estimation of Citrus grandis var. Longanyou Based on LiDAR 3D Point Clouds

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