Search Results

You are looking at 51 - 60 of 417 items for :

  • variance decomposition x
Clear All

were analyzed with the analysis of variance procedure using SAS (version 9.1; SAS Institute, Cary, NC) and subjected to regression analysis using SigmaPlot (version 9.01; SPSS, Chicago, IL) with the exception that substrate physical properties were

Free access

were composites of all aboveground biomass from three 7.4 × 10-cm areas. Wood chip duff samples were taken by clearing away intact wood chips and taking three samples of ≈20 g of decomposed wood chip litter. Soil and wood chip samples were sieved to

Free access

., 2012a , 2012b ; Goud et al., 2004 ; Momma et al., 2006 ; Shennan et al., 2011 ). Soil treatment using ASD involves incorporation of an easily decomposable C source, covering the soil with plastic, and then irrigating the topsoil to field capacity

Free access

increased dissolved organic C (DOC) concentration and greater solubility and movement of zinc and other nutrients in soil ( Royer et al., 2007 ; Wright et al., 2005 ). The decomposition of SOC contributes to increases in soil DOC, but deposition and decay

Free access

( Osborne, 2002 ). Untransformed data are shown for clarity of the presentation. Analysis of variance was used to detect year and treatment effects. The 2-year data on specific variables were combined when no significant year × treatment interaction was

Free access

prevent decomposition of ethephon. The resulting slurry was transferred into 35-mL glass tubes and capped with a rubber septum. Then, 1 mL sodium hydroxide (NaOH; 1 m ) was injected into each tube to convert the ethephon into ethylene gas. Preliminary

Open Access

changing the head difference at the base of the fritted plate between 1 and 6.1 kPa. Data were subjected to multivariate analysis of variance to determine the influence of bark age and source on chemical and physical properties. Coefficient of variance

Free access

analysis of variance) in which inferences about a population are to be made based on a random sample. Both the original and natural-logarithm-transformed values for bulk density were examined in the methods used in the remainder of this study with no

Free access

quality equal to turf receiving 23 g N/m 2 /year, presumably as a result of release of N from decomposing thatch and clippings. Thus, it may be possible to eliminate all N from landscapes fertilized during those rainy summer months of June through

Free access

substrate surface with 10 seeds of the designated weed species, initiating the second evaluation period. This process was repeated once more to initiate the third and final evaluation period. An analysis of variance was performed on all responses using the

Full access