.1% detergent) followed by rinsing with deionized water. Leaves were then dried to a constant weight at 65 °C and ground in a Wiley Mill (Wiley, Philadelphia, PA) to pass a 1-mm screen. Leaves for nutrient analysis were ground with a mortar and pestle. Samples
shoots and flower buds were counted from the 20 and 30 water sprouts tagged in the summer of 2005 and 2006, respectively. Nutrient analysis. The dried leaf and shoot samples were ground with a Wiley mill (3383-L10; Thomas Scientific, Swedesboro, NJ
differences among treatments for plant height, average width, GI, or SDW at 30 DAP. Table 4. Effects of pine bark-based and clean chip residual-based substrates on growth of ‘Blue Hawaii’ ageratum at two locations. Ageratum tissue nutrient analysis ( Table 5
Company, Little Chalfont, UK) into 50-mL plastic bottles. This digestate was used for nutrient analysis of P and K. Phosphorus was determined by using the ammonium molybdate colorimetric method using the spectrophotometer. Analysis for K was performed by
is a composted municipal sewage sludge from the city of Columbus, OH (nutrient analysis 0.45–1–0.25) and was used as a slow-release micronutrient source. Half of the plants from each mother tree or seed source were randomly assigned to one of two N
. ‘Chesapeake’), azalea ( Rhododendron obtusum Planck. ‘Karen’), and marigold ( Tagetes erecta Big. ‘Inca Gold’) could be grown in a noncomposted PTS (100% wood) produced from debarked loblolly pine trees. Nutrient analysis of the PTS substrate solution
, non-destructive measurement of chlorophyll content; the authors reported a linear relationship between SPAD and chlorophyll content (0.2128 + 0.0295 × SPAD; r 2 = 0.86). Foliar nutrient analysis. Composite samples of foliar tissue from each plant
exchange, water relations, and nutrient analysis were also determined, only data from the second (32 d) experiment are presented. Leaf and root sampling. Based on the preliminary experiment, four disk samples per tree (two disks per leaf/two leaves per tree
fractions and frozen pending preparation for elemental nutrient analysis. Proximal tissue was the top third of the tomato fruit. Distal tissue was the bottom third of the tomato fruit. Harvested fruit samples were stored at –80 °C before analysis. Leaf
for 48 h, then the dry weight of the root samples was obtained. Root density was expressed as milligram of dry weight per cubic centimeter of soil. Leaf nutrient analysis. Thirty random leaves with intact petioles per block were collected annually from