Main Article Content
Abstract
Crossandra in one of the important native flower crop in india and it can occupy the same soil for more than 2 years because of perennial nature and needs required amount of nutrient in the rhizosphere for the growth and development. Nutrition plays a vital role in the developmental processes which bring about differential growth characters in flower crops. Biofertilizers are nothing but the preparations containing live or latent cells of efficient strain of microorganisms recommended to improve the availability of nutrients to the crop plants. Based on the above trait, a research work has formulated to standardize the use of inorganic and biofertilizers to improve the growth and yield of crossandra cv Dindigul local with the following objectives. Isolation of Azospirillum from soil and roots of crossandra. Characterization of Azospirillumisolates. Inoculation effects of Azospirillum and phosphobacteria with graded levels of NPK fertilizers on the growth and yield of crossandra. In the present investigation, the plants receiving recommended dose of NPK fertilizers, Azospirillum and phosphobacteria recorded enhanced growth valves and flower yield. In contrast, the plants receiving 17 and 50% NPK fertilizers, Azospirillum and phosphobacteria also recorded same type of growth valves and flower yield. Hence, the treatments constitute 75 and 50% NPK fertilizers enhance growth valves resembles the recommended dose of NPK fertilizers.