ISHS Acta Horticulturae 710: International Symposium on Greenhouses, Environmental Controls and In-house Mechanization for Crop Production in the Tropics and Sub-Tropics
STANDARDIZATION OF AGRO-TECHNIQUES FOR PRODUCTION OF CHRYSANTHEMUM UNDER LOW COST POLYHOUSE |
| Authors: | T. Janakarin, Mahantesh, I. Murgod, B.S. Prabhakar |
| Keywords: | Dendranthema grandiflora Tzvelev, Chrysanthemum cv. Yellow Regan, climate, growing media, water soluble fertilizers, straight fertilizers, irrigation regimes |
| Abstract:
Chrysanthemum (Dendranthema grandiflora Tzvelev) are amongst the top three best selling cut-flowers in almost all major flower consuming countries. In Japan and China they are the number one flower. In India it has been recognized as one among the five important commercially potential flower crops. Studies on different agro-techniques for production of cut flower chrysanthemum cv. Yellow Regan under low cost polyhouse were undertaken during September 2003-February 2004. Treatments included seven combinations of agro-techniques, i.e., different media combinations (soil+compost+sand/cocopeat/sawdust), soil moisture levels (20 kPa and 40 kPa) and nutrient sources (water soluble/straight fertilizers) were tested in replications. Among the treatments T6 (soil+compost+cocopeat; 40 kPa; water soluble fertilizers) recorded the maximum plant height (87.00 cm) and stem girth (0.45 cm) followed by T1 (soil+compost+sand; 20 kPa; water soluble fertilizers). Maximum leaf area (top, middle and bottom 2 pairs of leaves) of 62.32 cm2 per plant was recorded in T6 and earliness to 50% flowering (91 days) and earliest flower initiation (81 days) were recorded in T7 (soil+compost+sawdust; 40kPa; water soluble fertilizers). T6 recorded the maximum number of flowers per spray (13) and diameter of flower (5 x 4.5 cm) followed by T1, which recorded 10 and 4.5 x 4 cm respectively. It is clear from the foregoing that the growth parameters, yield and quality of flowers were better in the growing medium including soil+compost+ cocopeat, with 40 kPa irrigation regime and fertigation with water soluble fertilizes. | |
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