Author(s):

C Rajamanickam and C Ravindran

Abstract: The present study on assessment of nematode management in tuberose was conducted by ICAR- Krishi Vigyan Kendra, Madurai during 2014 - 15 and 2015 - 16 at five identified farmers fields in Alanganallur block of Madurai district for an area of 2 ha. The present bio-management was conducted with variety Prajwal. There were four technological options were included in the present assessment such as bulbs were treated with Trichoderma viride + Pseudomonas fluorescens @ 20 g/kg and carbofuran @ 2.5 kg/ha were applied in the field (TO1), bulbs were treated Purpureocillium lilacinum @ 20 g/kg of bulb (TO2) and soil application @ 5 kg/ha and basamid @ 100 g per bed were applied in the each bed and covered with polythene mulch (TO3) and the farmer practices (TO4), application of neem cake @ 250 kg/ha as basal application at the time of last ploughing and indiscriminate application of fertilizers and pesticides spraying were imposed for the present experiment. The present study results revealed that bulbs were treated Purpureocillium lilacinum @ 20 g/kg of bulb (TO2) recorded the minimum days taken for flowering (134.15 days) and farmers practices observed the longest days taken for flowering (147.47 days). TO2 recorded the highest values in vegetative and flowering traits such as plant height (116.24 cm), number of leaves per plant (241.05), spike length (93.50 cm), number of florets per spike (41.80) and floret weight (1.52 g) whereas the farmers practices registered the lowest values in all the vegetative and flowers traits (101.26 cm; 228.14; 88.25 cm; 35.50; 1.09 g). Regards yield characters, TO2 recorded the highest yield per ha (11.18 t/ha) and the lowest yield was noticed in farmer practices (7.75 t/ha). In the case of nematode incidence, the lowest incidence was recorded in TO2 (demonstrated plot) of 10.0 per cent whereas the highest incidence was registered in farmers practices (21.0%). In the case of economic traits, TO2 registered the highest net profit of Rs. 5,10,120 with the B:C ratio of 2.55 and the lowest net profit (Rs. 2,79,250) and B:C ratio (1.64) was noticed in farmers practices.

DOI: 10.22271/phyto.2021.v10.i1x.13587

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