Effect of Rabbit Manure, VA Mycorrhiza and Bacillus sirculans on Growth, Flowering and Chemical Constituents of Periwinkle (Catharanthus roseus L.) Plants

A field experiment was conducted during two successive seasons 2010 and 2011 to determine the influence of rabbit manure rats( 5,10 and 15 m / fed.) and bio-fertilizers. The biofertilizer used was Bacillus sirculans (B.S) (used as seedlings inoculants) and vesicular arbuscular mycorrhizal fungi (VAM) (used as soil inoculants) and their interactions on periwinkle (Catharanthus roseus , L. G. Don). . Effect of the previous treatments on vegetative growth, flowering, constituents. The obtained data showed that plant height, branches number, herb dry weight, leaves dry weight, flowering date, number of flower/plant. Dry weight of flowers, N, P and K % , pigments content, total alkaloids % and content were led to the augmentation of due to rabbit fertilization treatments. The highest values of these previous parameters were observed when receiving the plants rabbit manure at the high rate (12 m /fed). In regard to bio-fertilizer treatments, all of them led to increase the plant height, branches number, herb dry weight, leaves dry weight, flowering date, number of flower/plant. Dry weight of flowers, N, P and K % , pigments content, total alkaloids % and content. The best results in terms of these characters were obtained when inoculating the plants with VAM + B.S. In most cases, the combined effect between rabbit manure fertilizer and bio-fertilizer treatments on periwinkle (Catharanthus roseus , L. G. Don) parameters was statistically significant. In most cases, inoculating the plants in combination with high rate of rabbit manure (15 m /fed) and VAM + B.S. was the most effective treatments concerning growth, flowering as well as chemical constituents.