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- Title
EFFECT OF BIO-STIMULANTS (HUMIC ACID, SALICYLIC ACID AND CHITOSAN) ON ROSE PERIWINKLE (CATHARANTHUS ROSEUS L.).
- Authors
E. M. S., NOFAL; A., MENESY FARDOUS; W. M., ABD EL-HADY; EMAN G., SHEHAB EL-DEEN
- Abstract
The present research was conducted during two successive seasons of 2017 and 2018 at the green house of the Horticulture Research Station, Mansoura, Egypt (31°2’4” N - 31°23’42” E) to study the influence of some bio-stimulants (humic acid, salicylic acid and chitosan) on vegetative and rooting growth parameters as well as some chemical constituents of a local variety of Catharanthus roseus L. (Vinca rosae, G. Don) (Periwinkle). The treatments involved ten applications i.e. control treatment, humic acid at 2, 4 and 6 ml/l, salicylic acid at 100, 150 and 200 mg/l and chitosan at 100, 200 and 300 mg/l. They were performed six times at fortnightly intervals during the two growing seasons under greenhouse conditions (25 ± 1 °C and 40-50% R.H). The obtained results showed that all vegetative growth and root parameters, (plant height, branch No., leaf area, root length) and their fresh and dry weights were significantly increased due to the applied bio-stimulants when compared to control treatment. Likewise, the chemical constituents of chlorophyll a and b in the leaves as well as their N, P and K% and total alkaloids also experienced a gain. The best results were provided by chitosan treatments at the rates of 300 and 200 mg/l, followed by humic acid at 6 ml/l then salicylic acid at 200 mg/l.
- Subjects
MANSURAH (Egypt); SALICYLIC acid; HUMIC acid; CATHARANTHUS roseus; CHITOSAN; ROOT growth; LEAF area
- Publication
Applied Ecology & Environmental Research, 2021, Vol 19, Issue 2, p971
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/1902_971980