{ "document_id": 15932, "page": 3, "width_pt": 612, "height_pt": 792, "rotation": 0, "pipeline_version": "paddleocr-vl-1.6+paul-48", "engine": "paddleocr_vl", "source_run_id": 16043, "item_count": 52, "counts_by_type": { "footer": 2, "form_field": 1, "heading": 1, "table": 1, "table_cell": 41, "text": 6 }, "build_ms": 18, "items": [ { "id": "p3.1", "order": 1, "type": "text", "bbox": { "l": 52.08, "t": 736.08, "r": 216.48, "b": 222 }, "text": "Co.) at 0 (control), 0.13, 0.26, or 0.81 kg·m⁻³; see Table 1 for treatment designations. Each subplot treatment consisted of a Rootrainer (27 cells) that contained Pro-Mix BX to which appropriate amounts of slow-release fertilizer had been incorporated. On 7 Feb. 2000, single seeds were sown into each cell of the Rootrainer so that in each of the three replicate blocks, 27 seeds were sown per treatment combination. A total of 972 seeds were sown (3 blocks × 3 main plot treatments × 4 subplot treatments × 27 seeds = 972 seeds). Seedlings were watered to saturation at least once each week, or as needed during the experiment. Ten weeks after sowing, on 17 Apr. 2000, when plants attained the two- to three-leaf stage, seed germination rate was recorded. At this time 10 uniform seedlings per experimental combination, or Rootrainer, were marked in each block, and leaf number and height were determined. Weekly fertilization treatments were also initiated at this time by manually saturating media with the appropriate liquid fertilizer; water used for preparation of the treatments had a total N content [NO₃ and ammonia (NH₄)] of about 0.7 mg·L⁻¹ (Scott Laboratories, Allentown, Pa.). The number of leaves per plant and seedling height were recorded on 13 June 2000, 18 weeks after sowing, when plants were destructively harvested. Stems, leaves, and roots were oven-dried at 70 °C (158 °F) for 48 h and weighed. The greenhouse air temperature was measured every 30 min during the experiment using TEMP HOBO sensors (Onset Computer Corp., Pocasset, Mass.). Average greenhouse air temperatures (±SE) were 25.1 ± 0.1, 31.3 ± 0.3, and 34.0 ± 0.7 °C, (77.2 ± 0.1, 88.3 ± 0.3, and 93.2 ± 0.7 °F), at 0300, 1200, and 1600 HR, respectively." }, { "id": "p3.2", "order": 2, "type": "text", "bbox": { "l": 54, "t": 220.8, "r": 216, "b": 197.28 }, "text": "EXPERIMENT 2. SLOW-RELEASE FERTILIZER APPLICATION ONLY. To" }, { "id": "p3.3", "order": 3, "type": "text", "bbox": { "l": 226.56, "t": 734.16, "r": 391.92, "b": 205.2 }, "text": "examine growth of container-grown\npawpaw seedlings with slow-release\nfertilizer as the sole fertilizer source, a\ngreenhouse experiment was conducted\nwith six treatment levels of Osmocote\nat 0 (control), 0.81, 2.22, 4.43, 8.86,\nor 17.72 kg·m⁻³ (designated A to E;\nsee Table 1). A replicated block exper-\nimental design, with three replicate\nblocks, was used with each block con-\ntaining each of the six treatments ar-\nanged randomly in each block. Each\ntreatment in each block consisted of a\nRootrainer (27 cells) containing Pro-\nMix BX to which appropriate amounts\nof slow-release fertilizer had been in-\ncorporated. On 30 June 2000, single\nseeds were sown into each cell of the\nRootrainer so that in each of the three\nreplicate blocks, 27 seeds were sown\nper treatment combination. A total of\n324 seeds were sown (3 blocks × 4\ntreatments × 27 seeds = 324 seeds\nsown). Seedlings were watered at least\nonce each week to runoff, or as needed\nduring the experiment. On 6 Sept.\n2000, 10 weeks after sowing, plants in\nall treatments had attained at least the\ntwo- to three-leaf stage, and seed ger-\nmination rate was recorded. At this\ntime, 10 uniform seedlings were\nmarked, and leaf number and height\nwere recorded. Thereafter, leaf num-\nber and height measurements were\nrecorded weekly. The number of leaves\nper plant and seedling height were\nrecorded on 26 Oct. 2000, 17 weeks\nafter the initial height measurements,\nwhen plants were destructively har-\nvested. Stems, leaves and roots were\noven-dried at 70 °C (158 °F) for 48 h\nand weighed. The greenhouse air tem-\nperature was monitored as described\npreviously. Average greenhouse air\ntemperatures (±SE) were 23.5 ± 0.1,\n29.1 ± 0.3, and 32.6 ± 0.7°C, (74.3 ±\n0.1, 84.4 ± 0.3, and 90.7 ± 0.7°F), at\n300, 1200, and 1600 HR, respectively," }, { "id": "p3.4", "order": 4, "type": "text", "bbox": { "l": 403.68, "t": 738.96, "r": 568.56, "b": 592.8 }, "text": "STATISTICAL ANALYSIS. Data were subjected to GLM analysis of variance and GLM regression analysis using the statistical program Costat (CoHort Software, Monterey, Calif.). Both linear and polynomial regression models were fit to the data and significance of the models determined. If linear regression models were significant, they are reported. If both linear and quadratic regression models were significant, then the quadratic model was reported." }, { "id": "p3.5", "order": 5, "type": "heading", "bbox": { "l": 404.88, "t": 589.2, "r": 454.56, "b": 576.96 }, "text": "Results", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p3.6", "order": 6, "type": "text", "bbox": { "l": 403.2, "t": 575.28, "r": 568.56, "b": 198 }, "text": "EXPERIMENT 1. SLOW-RELEASE AND WEEKLY LIQUID-FEED FERTILIZER APPLICATION. No significant treatment differences were observed for seed germination percentage (average germination percentage was 70%; data not shown). Analysis of variance indicated that there was a significant interaction between slow-release fertilizer rate and liquid-feed fertilizer regime main effects (P < 0.05) for plant height, root, shoot and total plant dry weight, and root:shoot ratio, but the interaction was not significant for seedling leaf number (Tables 2 and 3). Seedling leaf number showed a linear response to increasing rate of either liquid-feed Peters fertilizer or Osmocote, with the greatest leaf number at the highest treatment rates for both Peters and Osmocote (Table 2). Plant height showed a linear response to increasing rate of Peters in the control, medium, and high rates of Osmocote, with plants at 500 mg·L[p3.6.1] Peters with the greatest leaf number (see columns in Table 2). Plant height within each level of Peters showed a quadratic response to increasing rates of Osmocote, with the greatest plant height at the highest treatment rates for both Osmocote and Peters (see rows in Table 2). Root dry weight showed a linear response to increasing rate to Peters only in the", "children": [ { "id": "p3.6.1", "order": 7, "type": "text", "bbox": { "l": 403.2, "t": 575.28, "r": 568.56, "b": 198 }, "text": "⁻¹", "attrs": { "inline": true, "text_offset": 906, "text_span": 8, "bbox_estimated": true } } ] }, { "id": "p3.7", "order": 8, "type": "table", "bbox": { "l": 47.04, "t": 191.76, "r": 465.12, "b": 74.64 }, "text": "", "attrs": { "block_label": "table", "n_rows": 5, "n_cols": 10, "integrity": { "cells_checked": 22, "cells_flagged": 0 } }, "children": [ { "id": "p3.7.1", "order": 9, "type": "table_cell", "bbox": { "l": 235.6369, "t": 183.50279999999998, "r": 277.3483, "b": 174.77279999999996 }, "text": "Osmocote", "attrs": { "row": 0, "col": 0, "rowspan": 1, "colspan": 10, "bbox_refit": true } }, { "id": "p3.7.2", "order": 10, "type": "table_cell", "bbox": { "l": 50.7047, "t": 171.5122, "r": 185.3678, "b": 150.7917 }, "text": "Control\nTotal dry wt (g)", "attrs": { "row": 1, "col": 0, "rowspan": 1, "colspan": 1, "bbox_refit": true, "merged_continuation": true } }, { "id": "p3.7.3", "order": 11, "type": "table_cell", "bbox": { "l": 100.1993, "t": 171.5122, "r": 401.8349, "b": 150.7917 }, "text": "Low\nRoot to shoot ratio", "attrs": { "row": 1, "col": 1, "rowspan": 1, "colspan": 1, "bbox_refit": true, "merged_continuation": true } }, { "id": "p3.7.4", "order": 12, "type": "table_cell", "bbox": { "l": 133.8044, "t": 171.5122, "r": 169.1564, "b": 162.7822 }, "text": "Medium", "attrs": { "row": 1, "col": 2, "rowspan": 1, "colspan": 1, "bbox_refit": true } }, { "id": "p3.7.5", "order": 13, "type": "table_cell", "bbox": { "l": 182.615, "t": 171.5122, "r": 204.4292, "b": 162.7822 }, "text": "High", "attrs": { "row": 1, "col": 3, "rowspan": 1, "colspan": 1, "bbox_refit": true } }, { "id": "p3.7.6", "order": 14, "type": "table_cell", "bbox": { "l": 215.9609, "t": 171.5122, "r": 255.0407, "b": 162.7822 }, "text": "Response", "attrs": { "row": 1, "col": 4, "rowspan": 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