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Root life span efficiency and turnover

WebDec 21, 2001 · The root lifespan that maximizes efficiency can be visualized by plotting E lifetime over time, and represents the theoretically optimal root life span ( Yanai et al., … WebJul 11, 2008 · The shorter root life span would facilitate root turnover and generation of young root, which in turn would favour water and nutrient use efficiency, thus allowing L. chinensis to better cope with their stressed habitats. Physiologically, rhizomes are strong sinks to compete for photoassimilates with roots. As a result, it is conceivable that ...

Regional scale patterns of fine root lifespan and turnover …

WebDifferences in the life-span between root diameter and root order affect estimates of root turnover. Therefore, based on this study, both diameter and order should be considered when estimating fine root life-span and turnover. Key words: Fine root diameter, Root order, Life-span, Turnover, Fraxinus mandshurica, Larix gmelinii Cite this article WebFeb 14, 2011 · Root life span, efficiency, and turnover; P.J. Gregory Root growth and activity; View more references. Cited by (26) ... Tillage practices effect on root distribution and water use efficiency of winter wheat under rain-fed condition in the North China Plain. Soil and Tillage Research, Volume 146, Part B, 2015, pp. 286-295 ... buzzfeed what healthy people eat for lunch https://fusiongrillhouse.com

Variability in root production, phenology, and turnover rate …

WebJul 1, 2000 · Elevated CO 2 increases the absolute fine-root turnover rates; however, the standing crop root biomass is also greater, and the effect of elevated CO 2 on relative turnover rates (turnover[ratio ]biomass) ranges from an increase to a decrease. At the ecosystem level these changes could lead to increased C storage in roots. Webfor roots excavated from mature apple and citrus trees (median root life spans of 30 vs 300 d). To evaluate whether root longevity maximizes the efficiency of nutri-ent capture, daily … Webanisms controlling root turnover is likely to be found in the still poorly-defined relation between root function and root age. Yanai etat (1995) introduced a cost-benefit model to explore whether root life span maximizes the efficiency of nutrient capture, with efficiency defined as the ratio of nutrient buzzfeed what is privilege

Depth-related fine root dynamics of - ScienceDirect

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Root life span efficiency and turnover

Regional scale patterns of fine root lifespan and turnover under ...

WebMar 29, 2002 · It is hypothesized that the cost of fine root construction per unit root length would be negatively correlated with the rate at which root length is shed, and four citrus … WebEstimates of fine root lifespan and turnover are based on empirical observations and relationships with fine root and whole-plant traits and apply explicitly to the fine root pool …

Root life span efficiency and turnover

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WebJan 25, 2008 · The longevity of 2181 individual roots, with diameters <2 mm, was recorded over 8 years from repeated video images; 64% of these roots were followed until senescence and death. The remainder were alive at the end of the experiment and were treated as right-censored in survival analyses. WebSchla¨pfer and Ryser 1996), who examined root and leaf turnover in grass species with respect to their growth rate and nutrient availability, found that slower-growing ... long root life span was significantly associated with slow root respiration rates, low specific root length, and low nitrogen-to-carbon (N:C) ratios (Tjoelker et al. 2005

WebDec 15, 2006 · Some evidence exists that accelerating fine root turnover is appropriate to counterbalance negative effects caused by drought albeit formation of new roots in … WebOct 5, 2024 · Global patterns of root turnover for terrestrial ecosystems. Crossref GoogleScholar Google Scholar Gillabel J, Denef K, Brenner J, Merckx R, Paustian K …

Webroot turnover rate and their sensitivity to changes in root phenology. Estimates of fine root turnover rate were calculated using four common methods relating turn-over to total root … WebFeb 7, 2013 · Results from the combined model identified patterns of faster root turnover rates in the North Central US and slower turnover rates in the Southeastern US. Portions …

WebDec 21, 2001 · The relation between root age and root function is poorly understood, despite its importance to root longevity. • The effect of root age on respiration rates and 32 P-uptake kinetics was determined for roots excavated from mature apple and citrus trees (median root life spans of 30 vs 300 d).

WebJun 23, 2014 · All the root architecture modifications resulting from the interaction between seedlings and bioagents (rhizobacteria and Trichoderma spp.) observed in the present study favored the root plasticity of rice seedlings. ... “Root life span, efficiency and turnover,” in Plant Roots: The Hidden Half, Y. Waisel, A. Eshel, and U. Kafkafi, Eds., pp ... cest cookiesbuzzfeed what ice cream flavor am iWebJul 1, 2005 · The fine root turnover rate was 1.8 year−1for sequential cores and 1.4 year−1for third-year ingrowth cores. The inverse of the root turnover rate is, in turn, a measure of average root longevity; it was smaller for the finest roots in both cases. buzzfeed what job should i do