Influence of fertigation and consortium of biological sources on growth and flower yield of tuberose (Polianthes tuberosa L.) cv. ‘Prajwal’

Abstract

An experiment was conducted to evaluate the effect of fertigation and consortium of biological sources on growth parameters, yield attributes and flower yield of tuberose during 2015-2016. The treatment consists of three level of recommended dose of fertilizer through fertigation (RDFTF) gradients (125, 100 and 75 % of NPK), recommended dose of microbial consortium (5 kg @ acre-1), foliar spray of panchakavya (3 % and 4 %) and humic acid (0.4 % and 0.5 %) were laid out in randomized block design with two replications. The results revealed that the morphological characters namely plant height and number of leaves plant-1 at various growth stages were recorded highest in 100 % RDFTF + microbial consortium @ 5 kg acre-1 + 3 % panchakavya and 0.4 % humic acid. The yield attributes viz., number of florets spike-1, spike length, number of spikes clump-1, were registered highest with treatment received 100 % RDFTF + microbial consortium @ 5 kg acre-1 +3 % of panchakavya and 0.4 % of humic acid when compared to 100 % recommended dose of fertilizer through soil application. The yield attributes namely single flower weight was noticed highest of 1.81g respectively with 100 % NPK+ microbial consortium @ 5 kg acre-1 +3 % panchakavya and 0.4 % humic acid when compared to fertigation alone. The percent increase of flower yield by 100 % NPK+ microbial consortium @ 5 kg acre-1 +3 % panchakavya and 0.4 % humic acid was 39 % over soil application of recommended fertilizers. Overall findings concluded that treatment combinations of 100 % NPK+ microbial consortium @ 5 kg acre-1 +3 % panchakavya and 0.4% humic acid were recorded higher flower yield and yield attributes besides quality parameters.