, and prepared for elemental nutrient and soluble sugars. Samples were stored at −20 °C before analysis. Mineral composition. Nutrient analysis was conducted according to Barickman et al. (2013) with slight modifications. In brief, leaves were
separated into bulbs and tops. The tops were weighed in the field and five top samples were saved for nutrient analysis. All of the harvested onion bulbs (100 to 120) were weighed and their bulb diameters were determined. Bolted, doubled and rotten onions
height and width decreased significantly between those fertilizer formulations. SPAD readings were recorded despite O. triangularis ’ purple leaf appearance and little differences were found between “greenness” levels. Tissue nutrient analysis indicated
recent, fully expanded leaves) was collected for nutrient analysis per plot. In strawberry, 20 trifoliate leaves, including≈10 cm of the petiole, were sampled. In raspberry and blackberry, 20 fruiting lateral leaves, and in blueberry, 50 leaves from
‘Lapins’; 2 July for ‘Regina’). Fruit quality attributes and disorders were analyzed as described for Expt. 1. A fruit nutrients analysis was performed at harvest to investigate the impact of GB on the total nitrogen (N), phosphorous (P), magnesium (Mg
the standing leachate water. Leachate was collected from each pot one day after planting and then weekly until 17 Sept. 2007 (88 DAP). Total volume of leachate was recorded weekly and a subsample was collected biweekly for nutrient analysis. Leachate
., Ramsey, NJ). Plant SPAD readings were taken monthly for the first year and then every 3 months for the remainder of the study. Foliar nutrient analysis. The youngest fully expanded leaves were collected from all treatments every 3 months. Tissue samples
analysis after harvest. Nutrient analysis of leaf samples was analyzed by the OSU Soil, Water and Forage Analytical Laboratory in Stillwater, OK, using a nutrient analyzer (TruSpec Carbon and Nitrogen Analyzer; LECO Corp., St. Joseph, MI). Foliar analysis
trees for nutrient analysis is during midseason of plant growth ( Jones, 2001 ) or specifically for papaya, at 3- to 4-month-old leaves from a new flush ( Motsara and Roy, 2008 ). In each replicate, two fully matured leaves were harvested at the seventh
, 1987 ). Response to soil amendments was measured using size index (SI), flower count, shoot DW, and leaf nutrient analysis. The SI was measured 29 DAT and was calculated with the following equation: ({[(longest width + perpendicular width)/2] + height