landscape establishment and could cause root circling, leading to restricted water and nutrient movement and ability to adequately anchor. A high carbon-to-nitrogen ratio (138:1) of peat containers (S. Nambuthiri, unpublished data) may have limited their
similar concern of N immobilization was voiced by nursery growers (J. Altland, personal observations, unpublished). In a review of mulch use in urban landscapes, Chalker-Scott (2007) explained that high carbon to nitrogen ratio (C:N) is incorrectly
). Foliar carbon content was lowest in plants from Utah, and the C:N ratio was similar among sources ( Table 3 ). Table 3. Carbon isotope discrimination, foliar carbon content, and carbon to nitrogen ratio of five seed sources of bigtooth maple
and 45% to 65% for CC; Yeager et al., 2007 ) for substrates used in container plant production. Values for pH and cation exchange capacity (CEC) for PTS and PTSP and carbon-to-nitrogen ratio (C:N) for PTS are given in the Results and Discussion
N plus the inorganic N (NH 4 -N and NO 3 -N) ( Campbell-Nelson, 2015 ). Table 1. The carbon to nitrogen ratio (C:N), organic matter (OM), total C, organic N, nitrogen as ammonium (NH 4 -N), nitrogen as nitrate (NO 3 -N), phosphorus (P), and potassium
permanent location) than those of fertilizer spike-treated trees, which averaged 33% more leader growth than the next best nutrient treatment ( Fig. 2 ). Using a nutrient-laden compost such as a biosolids-based material or one that has a carbon–to-nitrogen
that the carbon assimilation decreased in the high shading condition and the low carbon to nitrogen ratio led to the decrease in bud numbers. In the high shade treatment, the nutrition absorption of tomato was restricted by light condition. These
substrate dry weight and weight at saturation. For the organic constituents, the organic content was also determined along with the carbon to nitrogen ratio (C:N) and their content in N, P, K, calcium (Ca), magnesium (Mg), sodium (Na), iron (Fe), manganese
soil fertility and increase the yield of subsequent crops in the rotation. These positive effects may be the result of the roots and/or aboveground plant biomass, which contain a considerable amount of N and a relatively low carbon-to-nitrogen ratio (C
four substrates. Substrate 2 also started Expt. 1 with the lowest carbon-to-nitrogen ratio (13:1), which may have allowed for better nitrogen uptake because ratios above 24:1 can lead to nitrogen immobilization and nutritional deficits ( Ingram, et al