Whole Plant Excavations to Determine Nutritional Requirements in 'Hort16a' Kiwifruit Vines

Boyd, L.M.; Barnett, A.M.; Civolani, C.; Fini, E.

doi:10.17660/actahortic.2010.868.19

Cited by 4 publications

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“…Annual nutrient removal and orchard nutrient requirements based on replenishing the nutrients removed from the tree have been estimated for different fruit tree species [orange ( Roccuzzo et al, ), apple ( Cheng and Raba , ; Kangueehi et al, ), olive ( Fernández‐Escobar et al, ), kiwifruit ( Boyd et al, ), and peach trees ( El‐Jendoubi et al., )]. Some of these studies estimated tree nutrient requirements in more than one cultivar but nutritional demands of fruit trees based on their ripening seasons have never been studied.…”

Section: Introductionmentioning

confidence: 99%

Ripening season affects tissue mineral concentration and nutrient partitioning in peach trees

Zhou

Melgar

2018

J. Plant Nutr. Soil Sci.

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The objective of this research was to determine the influence of ripening season on nutrient concentration and nutrient partitioning of peach trees (Prunus persica L. Batsch). We selected peach trees from three different ripening seasons and measured: (1) the concentration of macronutrients in pruned wood, thinned fruitlets, harvested fruit, and leaves fallen in autumn and (2) the total amount of macronutrients at each of these removal events. Our results showed that early‐season cultivars had more K in pruned wood, more P and K in fallen leaves, and more N, P, K, and Mg in mature fruits than mid‐ and late‐season cultivars. Also, early‐season cultivars removed more dry weight from pruned wood and fallen leaves but less from fruit than mid‐ and late‐season cultivars. These results suggest that different ripening season can affect peach tree nutrient concentration and nutrient partitioning and, consequently, peach cultivars harvested at different times of the year may benefit from specific fertilization programs rather than uniform, calendar‐based fertilization programs.

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Section: Introductionmentioning

confidence: 99%

Ripening season affects tissue mineral concentration and nutrient partitioning in peach trees

Zhou

Melgar

2018

J. Plant Nutr. Soil Sci.

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“…Kiwifruit growers need to consistently produce high yields of kiwifruit with high DMC to meet consumer preferences for fruit with intense flavor and sweetness (Harker et al, 2009) without compromising storage quality. Mature kiwifruit vines allocate 50% of annual newly fixed biomass to fruit each season (Boyd et al, 2010;Clark and Smith, 1992). This figure is relatively low compared with some perennial fruit crops; in apples, for example, 70% of annually fixed biomass is allocated to fruit (Heim et al, 1979).…”

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Manipulation of Whole-vine Carbon Allocation Using Girdling, Pruning, and Fruit Thinning Affects Fruit Numbers and Quality in Kiwifruit

Boyd¹,

Barnett²

2011

horts

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We compared the long-term effects of whole-vine source-sink manipulation on yield, composition, and quality of fruit from mature field-grown kiwifruit (Actinidia chinensis Planch. var. chinensis) ‘Hort16A’ vines. Four contrasting source/sink-modifying treatments were applied to vines each year from Spring 2003 to 2007: 1) control—standard canopy management techniques, no trunk girdle; 2) extended trunk girdle (ETG)—girdle was opened in late summer, kept open over winter, and allowed to heal the next spring; 3) “feast”—cropload was kept low and leaf numbers kept high, no trunk girdle; and 4) “famine”—fruit numbers were kept high and vines were heavily pruned to stimulate regrowth, no trunk girdle. Fruit from the famine vines were smaller with lower dry matter concentration (DMC; dry weight as a percentage of fresh weight) and had delayed maturity relative to fruit from the control vines. Return bloom was reduced in the famine vines, resulting in ≈42% less fruit in the famine vines compared with the feast vines, and this difference remained consistent across all three seasons. Fruit from the feast treatment were larger with advanced maturity relative to fruit from control vines; there were no differences in fruit numbers in subsequent seasons. Fruit DMC was higher and maturity was advanced in the ETG vines relative to the control vines. Fruit numbers in the ETG vines consistently increased relative to the control vines each season. There were no consistent treatment effects on fruit mineral concentrations, except that fruit from the feast vines had higher nitrogen concentrations than fruit from the famine vines. Seasonal variation in the incidence of storage disorders was large; in years when disorders were present, physiological pitting incidence was higher in fruit from the treatments that advanced maturity and the incidence of low temperature breakdown was highest in treatments that delayed maturity. Although the treatments affected vine productivity, fruit DMC, and storage performance, there was no evidence of a gradual decline in quality and productivity after 4 years of treatment application.

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Assessment of nutrient removal in bearing peach trees (Prunus persica L. Batsch) based on whole tree analysis

El-Jendoubi

Abadı́a

2013

Plant Soil

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Whole Plant Excavations to Determine Nutritional Requirements in 'Hort16a' Kiwifruit Vines

Cited by 4 publications

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Ripening season affects tissue mineral concentration and nutrient partitioning in peach trees

Ripening season affects tissue mineral concentration and nutrient partitioning in peach trees

Manipulation of Whole-vine Carbon Allocation Using Girdling, Pruning, and Fruit Thinning Affects Fruit Numbers and Quality in Kiwifruit

Assessment of nutrient removal in bearing peach trees (Prunus persica L. Batsch) based on whole tree analysis

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