Nitrogen Metabolism, Translocation, and Recycling in Apple Trees

Titus, John S.; Kang, Sangmin

doi:10.1002/9781118060773.ch7

Cited by 146 publications

(44 citation statements)

References 139 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Studies in nectarine by Munoz et al (1993) and studies in apple by Toselli et al (2000) indicated that the perennial deciduous fruit trees in winter stored N in twig and cortex of the trunk. There are different viewpoints about whether root storage N for using in following year (Titus and Kang, 1982). Root N nutrition during the period of dormancy may be a larger storage organ of N (Millard, 1995;Khemira et al, 1998;Tagliavini et al, 1999;Sun et al, 2002).…”

Section: Discussionmentioning

confidence: 96%

¹⁵NITROGEN STUDY ON ABSORPTION, DISTRIBUTION AND UTILIZATION OF NITROGEN APPLIED IN EARLY SUMMER IN RED FUJI APPLE

Zhang

Han

Zhao

et al. 2012

Journal of Plant Nutrition

View full text Add to dashboard Cite

2 Total nitrogen (N) concentration (N%), N derived from 15 N-fertilizer (Ndff%), amount of 15 N uptake (ANU) in main organs (leaves, shoots, roots, fruits), and N use efficiency (NUE) were measured to assess N absorption, distribution, and utilization of Red Fuji apple trees across two years using a 15 N-enriched urea method. The N% in leaves and fruits decreased while those in shoots and roots increased in both years. The Ndff% and ANU in roots were highest at fruitlet stage than those in leaves, shoots and fruits at mature stages. This suggested that the absorbed 15 N by roots was redistributed to new organs. The N% was lower while Ndff% and ANU were greater in 2008 than 2007. The most 15 N absorbed was accumulated in the trunks, main and coarse roots and smaller in the fine roots and biennial branches. The NUE in 2007 and 2008 reached 9.9% and 12.2% respectively.

show abstract

Section: Discussionmentioning

confidence: 96%

¹⁵NITROGEN STUDY ON ABSORPTION, DISTRIBUTION AND UTILIZATION OF NITROGEN APPLIED IN EARLY SUMMER IN RED FUJI APPLE

Zhang

Han

Zhao

et al. 2012

Journal of Plant Nutrition

View full text Add to dashboard Cite

show abstract

“…The large size and perennial nature of deciduous tree crops complicates the derivation of nutrient uptake patterns. The ability of perennials to store nutrients to meet a substantial proportion of the early demands of growing leaves and flowers/fruits further complicates the determination of seasonal uptake patterns Titus and Kang, 1982;Tromp, 1983;Millard and Thomson, 1989;Millard and Grelet, 2010). The amount of stored nutrients also varies depending on environment, tree age and species (Weinbaum et al, 1987;Deng et al, 1989;Rosecrance et al, 1998;Weinbaum and Van Kessel, 1998).…”

Section: Introductionmentioning

confidence: 97%

Seasonal changes in nutrient content and concentrations in a mature deciduous tree species: Studies in almond (Prunus dulcis (Mill.) D. A. Webb)

Muhammad

Sandén²,

Lampinen

et al. 2015

European Journal of Agronomy

View full text Add to dashboard Cite

“…Nitrogen is the most important element for maintaining growth and high productivity in tree fruits (Titus and Kang, 1982). Sweet cherries (Prunus avium L.) on precocious, interspecific (P. cerasus · P. canescens) Gisela Ò (Gi) rootstocks (e.g., Gi3, Gi5, Gi6, Gi12) are likely to produce large crops but small-sized fruit when total leaf area is not adequate to support such crop loads (Andersen et al, 1999;Lang, 2000;Whiting and Lang, 2004).…”

mentioning

confidence: 99%

“…Foliar applications of urea in fall have had positive effects in deciduous fruit trees (e.g., Titus and Kang, 1982). Urea is the most widely used form of N for foliar applications because of its rapid absorption, low phytotoxicity, and high solubility (Bondada et al, 2001;Yamada et al, 1965).…”

mentioning

confidence: 99%

Foliar Applications of Urea Affect Nitrogen Reserves and Cold Acclimation of Sweet Cherries (Prunus avium L.) on Dwarfing Rootstocks

Ouzounis¹,

Lang²

2011

horts

View full text Add to dashboard Cite

Seasonal uptake, storage, and remobilization of nitrogen (N) are of critical importance for plant growth. The use of N reserves for new growth in the spring is especially important for sweet cherry (Prunus avium L.), for which new shoot and fruit growth is concomitant and fruit development occurs during a relatively short bloom-toripening period. Sweet cherries grafted on precocious, dwarfing rootstocks such as the interspecific (P. cerasus · P. canescens) hybrids Gisela Ò 5 and 6 tend to produce large crops but smaller fruit when crop load is not balanced with adequate leaf area. Study objectives were to: 1) characterize natural N remobilization during fall and winter to canopy reproductive and vegetative meristems; 2) determine the effect of fall foliar urea applications on storage N levels in flowering spurs; 3) determine whether differential storage N levels influence spur leaf formation in spring; and 4) determine whether fall foliar urea applications affect the development of cold-hardiness. During fall, total N in leaves decreased by up to 51% ½dry weight (DW) and increased in canopy organs such as flower spurs by up to 27% (DW). The N concentration in flower spurs increased further in spring by up to 150% (DW). Fall foliar applications of urea increased storage N levels in flowering spurs (up to 40%), shoot tips (up to 20%), and bark (up to 29%). Premature defoliation decreased storage N in these tissues by up to 30%. Spur leaf size in the spring was associated with storage N levels; fall foliar urea treatments increased spur leaf area by up to 24%. Foliar urea applications increased flower spur N levels most when applied in late summer to early fall. Such applications also affected the development of cold acclimation in cherry shoots positively during fall; those treated with urea were up to 4.25 8C more cold-hardy than those on untreated trees.

show abstract

Nitrogen Metabolism, Translocation, and Recycling in Apple Trees

Cited by 146 publications

References 139 publications

¹⁵NITROGEN STUDY ON ABSORPTION, DISTRIBUTION AND UTILIZATION OF NITROGEN APPLIED IN EARLY SUMMER IN RED FUJI APPLE

¹⁵NITROGEN STUDY ON ABSORPTION, DISTRIBUTION AND UTILIZATION OF NITROGEN APPLIED IN EARLY SUMMER IN RED FUJI APPLE

Seasonal changes in nutrient content and concentrations in a mature deciduous tree species: Studies in almond (Prunus dulcis (Mill.) D. A. Webb)

Foliar Applications of Urea Affect Nitrogen Reserves and Cold Acclimation of Sweet Cherries (Prunus avium L.) on Dwarfing Rootstocks

Contact Info

Product

Resources

About

Nitrogen Metabolism, Translocation, and Recycling in Apple Trees

Cited by 146 publications

References 139 publications

15NITROGEN STUDY ON ABSORPTION, DISTRIBUTION AND UTILIZATION OF NITROGEN APPLIED IN EARLY SUMMER IN RED FUJI APPLE

15NITROGEN STUDY ON ABSORPTION, DISTRIBUTION AND UTILIZATION OF NITROGEN APPLIED IN EARLY SUMMER IN RED FUJI APPLE

Seasonal changes in nutrient content and concentrations in a mature deciduous tree species: Studies in almond (Prunus dulcis (Mill.) D. A. Webb)

Foliar Applications of Urea Affect Nitrogen Reserves and Cold Acclimation of Sweet Cherries (Prunus avium L.) on Dwarfing Rootstocks

Contact Info

Product

Resources

About

¹⁵NITROGEN STUDY ON ABSORPTION, DISTRIBUTION AND UTILIZATION OF NITROGEN APPLIED IN EARLY SUMMER IN RED FUJI APPLE

¹⁵NITROGEN STUDY ON ABSORPTION, DISTRIBUTION AND UTILIZATION OF NITROGEN APPLIED IN EARLY SUMMER IN RED FUJI APPLE