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Subject: Horticulture × Author: Anop Kumari × Start date: 2002 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Response of biofertilizers on growth, flowering and yield of chrysanthemum
    (CCSHAU, 2013) Anop Kumari; Goyal, R.K.
    The present investigation entitled “Response of biofertilizers on growth, flowering and yield of chrysanthemum” was conducted in the screen house of the Department of Horticulture, CCS Haryana Agricultural University, Hisar during the year 2011-12 and 2012-13. The investigation composed of three experiments viz., (i) response of biofertilizers in combination with nitrogen on growth and flowering of chrysanthemum (four levels of nitrogen, i.e., 0, 10, 20 and 30 g/m2 and two biofertilizers viz., Azotobacter and Azospirillum), (ii) response of biofertilizers in combination with phosphorous on growth and flowering of chrysanthemum (four levels of phosphorous, i.e., 0, 10, 15 and 20 g/m2 and two biofertilizers, i.e., PSB and mycorrhiza) and (iii) response of single and coinoculation of PGPR on growth and flowering of chrysanthemum (three strains of Bacillus viz., SYB101, SB155 and SB127 and three strains of Pseudomonas, i.e., WPS73, CPA152 and P20). All the possible combinations of nitrogen levels and biofertilizers were found to have significant influence on growth, flowering and yield parameters of chrysanthemum. The minimum number of days taken to first flowering, maximum flowering duration, flower size, number of flowers per plant, flower yield per plant and number of suckers per plant were recorded with nitrogen 20 g/m2 along with Azospirillum. An increase in nitrogen content was noted with increased application of nitrogen, whereas, phosphorus and potassium content of plant decreased. Phosphorus 15 g/m2 along with PSB was found most effective for reduced number of days taken for first flowering, longest flowering duration, maximum number of flowers per plant and flower yield per plant as well number of suckers per plant. Nitrogen and phosphorus content of plant increased significantly with increasing levels of phosphorous, and the maximum content was observed with phosphorous 20 g/m2. Different strains of Bacillus and Pseudomonas significantly influenced the observed parameters of chrysanthemum. The results indicate that Bacillus strain SB127 and Pseudomonas strain CPA152 were found potent in increasing all growth, flowering and yield parameters. The SB127 + CPA152, SB155 + CPA152 and SB127 + P20 combinations of Bacillus and Pseudomonas strains showed best results in chrysanthemum.