Influence of fertigation and organic sources of nutrients on chlorophyll content and soil microbial population of Tuberose

Abstract

An experiment was conducted to investigate the effect of fertigation, microbial consortium and biostimulants on chlorophyll content and soil microbial population in Tuberose cv. Prajwal at T.Pudhupatti village, Dindigul District of Tamil Nadu during 2015- 16 and 2016-17. The experiment was laid out in randomized block design (RBD) with nineteen treatments including each three levels of water-soluble fertilizers viz., 125, 100 and 75 per cent of the recommended doses of fertilizers along with microbial consortium, foliar spray of panchagavya and humic acid and the treatments were replicated twice. The results revealed that, 100 per cent of recommended dose of fertilizer through fertigation along with microbial consortium @ 12.5 kg ha^-1, panchagavya @ 3 per cent and humic acid @ 0.4 per cent (T9) registered the highest chlorophyll “a”, chlorophyll “b”, total chlorophyll content and soil bacteria, fungi and actinomycets population. The increase of total chlorophyll by the T9 over soil application of recommended dose of fertilizer was 33 per cent.