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; Wyatt et al., 1992 ). In addition, mulches that immobilize nitrogen because of a high carbon to nitrogen ratio may influence the quality (e.g., protein and sugar content) of the floral resources produced and thus pollinator visitation and crop

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(TNSC) and nitrogen (N), and the carbon-to-nitrogen ratio (C/N) in leaves of strawberry plants that received N fertigation only (fertigation) or fertigation + urea applied as a foliar spray in fall (fertigation + foliar urea). z Fig. 1

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quadratic ( Q ) contrasts over time. Fig. 2. Total plant growth rate, rate of nitrogen (N) uptake from fertilizer, and carbon-to-nitrogen ratio (CN) of three Rhododendron cultivars grown in containers with (+N) or without (–N) additional N

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) released in relation to the initial C-to-N ratio of litter residue during the summer of 2005 and 2007; P value for model fit = 0.0002 and 0.0331, respectively. C = carbon. Soil total carbon, nitrogen, and carbon-to-nitrogen ratios. Data are presented

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leave relatively little shoot residue on the bed surface. At this point, the biomass is typically extremely succulent with a low carbon to nitrogen ratio (9 to 12) and would contain at least 100 kg·ha −1 N ( Brennan and Boyd, 2012b ; Brennan et al

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NT, ST, and CT treatments were also reduced. Carbon-to-nitrogen ratio of cover crop residue was highest for NT and ST treatments in both years ( Table 2 ). Table 2. Aboveground biomass (Mg·ha −1 ) and C:N ratio of cereal rye-hairy vetch cover crop at

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significantly reduced the plant fresh weight and SPAD, which were related to the high soil carbon to nitrogen ratio (C/N) after adding high concentrations of grape pruning material. Previous studies have indicated that when soil has a high C/N, the

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