ftir analysis of root rot disease incidence in sunflower (helianthus annus .l)

A study has been made for four different sunflower varieties, namely CO-4, CO- 5, HYCO-2 and TCSH-1 which were grown in trial fields with three different manure treatments viz. control (T1), chemical fertilizer (T2) and organic manure (T3). From the root rot disease roots, the compound identified and quantified from the four sunflower varieties by FT-IR analysis and the spectra were recorded for all the samples in the range of 4000 – 400 cm-1. The marked reduction in intensities of the absorption peaks in the spectra of organic manure treated when compare to control and chemical fertilizer. Also an attempt has been made to correlate the extinction coefficient (K) values with chance in sunflower root rot disease treated fields.