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/N ratio dropped to 21.1 and 21.9 in 6- and 7-month old plants, respectively ( Fig. 1 ). Fig. 1. The carbon/nitrogen (C/N) ratio of Phalaenopsis Sogo Lotte ‘F2510’ at various plant ages. Vertical bars indicate se of 12 replications. Means with

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, allocation, and carbon/nitrogen (C/N) ratio in tissues in May 2013 of container-grown ‘Immortality’ tall bearded iris fertigated with five different N rates. Nitrogen allocation trend was similar to the DW allocation to different tissues. The close

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.5, 5.0, and 7.5 m m N, respectively ( Fig. 5 ). Fig. 5. Root nitrogen content (RN), root carbon content (RC), root carbon to nitrogen ratio (R-C:N), and root nitrogen use efficiency (RNUE) as affected by 0-, 0.5-, 1.0-, 2.5-, 5.0-, and 7.5-m m

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known mechanism for perennial plants to conserve and reuse stored N that can substantially impact the N use efficiency ( Coleman et al., 2004 ; Hinesley et al., 1991 ). Nitrogen shortages lead to reduction of the RuBisCo (ribulose-1, 5-bisphosphate

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) the sum of leaf, stem, and bulb parts. Fig. 3. Biomass ratios in relation to the sum of leaf, stem, and bulb parts (LSB) and bulb characteristics of garlic plants grown in response to ambient and elevated carbon dioxide and nitrogen (N) treatments: low

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, and carbon-to-nitrogen (C/N) ratio of container-grown green ash in Nov. 2005 after growing for 9 months with different N rates and types of fertilizers [urea formaldehyde (UF) and controlled-release fertilizer (CRF)] in 2005. Fertilizer N uptake

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, University Park) for processing and analysis. Laboratory tests measured the following properties: pH, carbon:nitrogen (C:N) ratio, soluble salts, solids, moisture, organic matter, carbon, total nitrogen (N), organic nitrogen, ammonium nitrogen, phosphate (P 2

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treatment ( Table 3 ). Similar examples for preferential partitioning of photosynthetic carbon to the roots and decrease in shoot–root ratio are well documented for other species under N deficiency ( Hermans et al., 2006 ). Nitrogen-deficient Eustoma

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adequate soil S levels. Table 5. Means and sample ranges for soil carbon (C), soil sulfur (S), soil nitrate-nitrogen (NO 3 -N), soil organic matter (SOM), soil C:N ratio, and soil C:S ratio for the 2008 pecan orchard survey. Soil Fe was not measured in 2008

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microbial growth that then benefits a specific crop ( Trinsoutrot et al., 2000 ). However, the carbon:nitrogen ratio of mulch clearly affects nutrient availability to the plant ( Congreves et al., 2012 ; Manzoni et al., 2010 ) and may be one of the most

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