Effect of Date of Transplanting, Spraying with Active Yeast and Pinching in Growth and Flowering Plants of Atharanthus roseus L.

Farouq Al-Maathedi, Ali; Abdulrazaq S. Al-taee, Mohammed

	Effect of Date of Transplanting, Spraying with Active Yeast and Pinching in Growth and Flowering Plants of Atharanthus roseus L.
Journal of Tikrit University For Agriculture Sciences
Article 1, Volume 18, Issue 2, 2018, Pages 87-95
Authors
Ali Farouq Al-Maathedi; Mohammed Abdulrazaq S. Al-taee
Abstract
The experiment was conducted in the greenhouse of the field of gardening and landscaping Directorate in Erbil for the duration of 1/4/2015 01/12/2015 to the Periwinkle Madagascar plant Catharanthus roseus L. G. Don cv. Pacifica X P Mix Bold. The experiment carried out using three factors (2 × 4 × 2) with Split split plot within Completely Randomized Block Design, the first factor: Date of transplanting in two dates, six or eight weeks of transplant of seedlings into pots, the second factor spraying with active yeast with four concentrations (0, 2, 4 and 8) gm.ltr -1, third factor pinching or non-pinching (control). The results showed that the first date of transplanting of seedlings, which caused a significant increase in plant height by 8.59% compared to the second date. The first date of transplanting of seedlings was early flowering by 6.80 days compared to the second date of 136.46 days until flowering, while the second date of transplanting seedlings increased significantly in the number of total flowers by 3.44% compared with the transplanting on the second date, which amounted to 63.41 flower.plant -1.. While the spraying of the yeast showed a superior concentration of 2 gm.lt-1 with a significant increase and gave the largest leaf area amounted to 841.33 cm2. And the pinching significantly increased the period until the flowering 2.50 days compared with the non-pinching, which amounted to 131.34 days until flowering.
Keywords
Catharanthus roseus; yeast; Pinching

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