Effects of root pruning on the vegetative growth and fruit quality of Zhanhuadongzao trees

Yang, S. J.; Xing, Shangjun; Liu, C.; Du, Zhen‐Yu; Wang, H.; Xu, Yanxia

doi:10.17221/29/2009-hortsci

Cited by 20 publications

(17 citation statements)

References 13 publications

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“…Root pruning is a cultivation method used to adjust the above- and belowground plant sections and to modify the vegetative and reproductive growth processes of plants by controlling the growth of root systems [ 7 ]. Root pruning is commonly used in agricultural production to control canopy size during the vegetative growth of apple [ 8 , 9 ], pear [ 10 ], and peach [ 11 – 12 ] trees to enable them to adapt to the dwarf habit and close planting requirements of modern fruit tree plantations.…”

Section: Introductionmentioning

confidence: 99%

Effects of root pruning on the physicochemical properties and microbial activities of poplar rhizosphere soil

et al. 2017

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This study aimed to determine the effects of root pruning on the physicochemical characteristics and microbial activities of poplar rhizosphere soil. The root systems of 5-year-old poplar (Populus×euramericana cv. ‘Neva’) trees were manually pruned at 6, 8, or 10 times diameter at breast height (DBH) from the trunk (severe, moderate, and light, respectively) along both inter-row sides. Moderate root pruning significantly increased the concentrations of amino acids, organic acids, and total sugars in the root exudates and decreased the pH of rhizosphere soil. This treatment also increased the contents of available nitrogen, phosphorus, potassium, and total organic carbon as well as high-, medium-, and low-activity organic carbon in rhizosphere soil. Moreover, moderate pruning increased the contents of microbial biomass carbon and nitrogen, and enhanced basal respiration, in addition to decreasing the metabolic quotients in rhizosphere soil by 8.9%, 5.0%, and 11.4% compared with control, light, and severe root pruning treatments, respectively. Moderate pruning increased the growth rates of DBH, tree height, and volume to the highest levels. Furthermore, these indices were not significantly different between the light root pruning and control groups, but varied significantly between severe and moderate root-pruning treatments. Thus, root pruning, depending on the distance from the trunk, significantly influences the physicochemical properties and microbial activities in poplar rhizosphere soil.

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Section: Introductionmentioning

confidence: 99%

Effects of root pruning on the physicochemical properties and microbial activities of poplar rhizosphere soil

et al. 2017

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“…Specifically, root pruning destroys the old growth balances of trees and changes their assimilation abilities, nutrient distributions and hormone levels. The combined action of these elements may cause different effects on growth and fruit quality [10]. Therefore, our study was targeted at optimizing the root system by root pruning and testing how the competitive indicators of Chinese jujube trees change by reducing the root system.…”

Section: Introductionmentioning

confidence: 99%

Effect of root pruning on competitive ability in Chinese jujube tree

Yang¹,

Du²,

Yu³

et al. 2012

Fruits

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-Introduction. The Chinese jujube tree always presents some unfavorable performances because its vegetative growth is very vigorous. Our study was conducted to apply root pruning to test whether it can effectively inhibit the vigorous vegetative growth by regulating the competitive ability of the root system for water and nutrients. Materials and methods. For our experiment, roots were cut at three different distances from the trunk (light, moderate and severe root pruning) on both inter-row sides of jujube trees to the depth of 20 cm. Roots of control jujube trees were not pruned. Then we determined for three years the competitive indicators of Chinese jujube trees including the length, number and thickness of primary branches; photosynthetic characteristics and nutrient concentrations of leaves; hormone contents in the jujube head, flower number and fruiting percentage, yield, and fruit quality. Results and discussion. In the early stage after root treatment, root pruning decreased lots of indicators such as concentrations of nitrogen, phosphorus, and potassium in leaves, photosynthesis, transpiration, stomatal conductance, and intercellular CO 2 concentration of leaves, relative to the same indicators as the control group. With the gradual emergence of new roots, these indexes appeared to have adverse patterns with respect to those in the early stage after root pruning. Compared with the control, root pruning significantly decreased the length and number of primary branches and flower number, but thickened primary branches, enhanced fruiting percentage and increased the amount of ethylene release of the jujube head in the whole experiment. Fruit quality was improved with root pruning, as indicated by increases in vitamin C and total sugar and a decrease in titrable acidity. No effects of root pruning were noticed on yield. From our results, we conclude that the removal of the root system at a distance of three times the trunk diameter (severe pruning) from the trunk is the most effective in regulating the competitive ability of the Chinese jujube tree.China / Ziziphus / root pruning / plant response / performance testing / agronomic characters / fruits / quality Effet de la taille des racines sur les performances du jujubier chinois.Résumé -Introduction. Le jujubier chinois présente toujours certaines performances désavantageuses du fait de sa croissance végétative très vigoureuse. Notre étude a été menée pour tester la taille des racines afin de vérifier si elle peut freiner efficacement la croissance végétative en régulant la compétitivité du système racinaire pour l'eau et les nutriments. Matériel et méthodes. Pour notre expérimentation, les racines de jujubiers chinois ont été coupées à trois distances différentes à partir du tronc (taille légère, modérée et sévère des racines), de chaque côté entre les rangs de jujubiers, à 20 cm de profondeur. Les racines des jujubiers témoins n'ont pas été taillées. Nous avons ensuite suivi pendant trois années certains indicateurs de compétitivité du jujubier...

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“…Root pruning stimulates new root growth (Castle, 1983), whereas others have found no effect on root growth (Geisler and Ferree, 1984), but a pronounced decrease in shoot growth with increasing severity of root pruning (Andersen et al, 2000;Brantley and Conner 1997;Geisler and Ferree, 1984;Solfjeld and Hansenf, 2004;Yang et al, 2010). The seedlings with heavier strength of root pruning were unable to uptake adequate water and nutrient due to the decreased root-soil contact and root surface area from root pruning (Farmer and Pezeshki, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…However, there were some reports that root pruning effect was various depending on the pruning intensity (Sterling and Lane, 1975;Yang et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Influence of Initial Seedling Size and Root Pruning Intensity on Growth of Transplanting Seedling of Quercus acutissma

Na¹,

Lee²,

Kim³

2013

Korean Journal of Plant Resources

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-The objective of this study was to examine the effect of root pruning intensity in combination with different initial seedling size on the growth of transplanting seedlings of Quercus acutissima. One-year-old seedlings were divided into three groups depending on their height, i.e. small (< 15 cm), medium (25-35 cm) and large size (35 cm <). Root of seedlings was pruned by three intensity such as, leaving 5 cm (severe), 10 cm (medium) and 15 cm (light) of taproot from the root-collar. After one year, we investigated survival rate, height and root-collar diameter (RCD) increment and final shoot dry weight. Also we measured characteristics of newly developed lateral roots such as number, total length, dry weight and diameter. Severe root pruning showed the lowest survival rate in all seedling size. Height increment, RCD increment and shoot dry weight were decreased with increasing intensity of root pruning. Seedlings of medium and light root pruning showed similar above-ground growth and dry weight of lateral roots. More large seedlings showed good survival rate, height increment and final shoot dry mass in all root pruning intensity. Therefore, one-year-old seedlings of Q. acutissima should be pruned taproot by 10 cm and transplanted to obtain excellent performance and increase the efficiency of transplanting work. Based on the findings of this study, it is important that applying to different root pruning intensity depending on initial seedling size for producing 2-year-old seedlings with excellent growth and high quality.

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Effects of root pruning on the vegetative growth and fruit quality of Zhanhuadongzao trees

Cited by 20 publications

References 13 publications

Effects of root pruning on the physicochemical properties and microbial activities of poplar rhizosphere soil

Effects of root pruning on the physicochemical properties and microbial activities of poplar rhizosphere soil

Effect of root pruning on competitive ability in Chinese jujube tree

Influence of Initial Seedling Size and Root Pruning Intensity on Growth of Transplanting Seedling of Quercus acutissma

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