Evaluation of Pre- or Postharvest Application of Some Minerals and Organic Agents on the Growth, Flowering and Vase Life of Rudbeckia hirta, L.
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Bibliographic record
Abstract
<p>The experiments were carried out during 2014 and 2015 summer seasons at the greenhouses of the Experimental Farm of Faculty of Agriculture, Kafr El-Sheikh University. The experiments were conducted in two phases: First one (pre-harvest): <em>Rudbeckia hirta</em> seedlings were transplanted during the first week of May to 30 cm diameter plastic pots filled with a soil mixture of clay and sand (1:1, v:v). Pots were divided in two equal groups, the first one, plants were foliar sprayed with one of the following:- Distilled water for the control treatment, CaCl<sub>2</sub> (125, 250, 375 mg·L<sup>-1</sup>), NiSO<sub>4</sub> (30, 45, 60 mg·L<sup>-1</sup>), CoCl<sub>2</sub> (50, 75, 100 mg·L<sup>-1</sup>), K<sub>2</sub>SiO<sub>3</sub> (100, 150, 200 mg·L<sup>-1</sup>) and SA (100, 150, 200 mg·L<sup>-1</sup>) at 60, 45, 30 and 15 days before harvest. The second group was without pre-harvest application assay (untreated plants).</p><p>Second phase (postharvest) was conducted in two different methods as follows: First method, flower stems resulted from each pre-harvest treatment were preserved in 250 mL graduated test tube filled with 200 mL of standard holding solution consists of sucrose (4%) + 8-Hydroxyquinoline citrate (250 mg·L<sup>-1</sup>). The second method, flower stems resulted from plants without pre-harvest application preserved in holding solution consists of a constant sucrose (4%) and 8-Hydroxyquinoline citrate (250 mg·L<sup>-1</sup>) beside one of the following additives: Distilled water for the control treatment, CaCl<sub>2</sub> (125, 250, 375 mg·L<sup>-1</sup>), NiSO<sub>4</sub> (30, 45, 60 mg·L<sup>-1</sup>), CoCl<sub>2</sub> (50, 75, 100 mg·L<sup>-1</sup>), K<sub>2</sub>SiO<sub>3</sub> (100, 150, 200 mg·L<sup>-1</sup>) and Salicylic acid (100, 150, 200 mg·L<sup>-1</sup>). Results showed that, pre harvest spraying plants with higher levels of K<sub>2</sub>SiO<sub>3</sub> or CaCl<sub>2</sub> recorded the highest values for all plant vegetation characters. K<sub>2</sub>SiO<sub>3</sub> followed by SA excelled on others in most flowering aspects. At the post harvest stage, SA, K<sub>2</sub>SiO<sub>3</sub> and CaCl<sub>2</sub> exchanged the excellence between them for most vase life measurements. Flowers resulted from plants that preharvest treated was better than those that did not preharvest treated.</p>
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it