Vol. 8, Special Issue 5 (2020)
Evaluation of IPM modules against shoot and fruit borer in Okra
Author(s): Suvarna Patil, Arunkumar B, Renuka H, Poornima H, Shridhar D and Padanad LA
Abstract: Okra (Abelmoschus esculentus) locally known as ‘Bhendi’ or ‘Dherosh’ also known as lady’s finger is a popular and most common annual vegetable crop grown from seed in India and in other tropical and subtropical parts of the world. Several insect pests have so far been recorded to attack okra but okra shoot and fruit borer, is the most destructive insect pest responsible for considerable damage inflicting yield loss up to 40-50% or more. Now-a-days, IPM has been attaining immense importance in the agricultural scenario of India. Hence formulation of a sustainable IPM module was felt necessary to manage this pest. The experiment was conducted at Regional Horticultural Research and Extension Centre, Dharwad during khariff season of 2017-18 ans 2018-19. There were five modules, M-I: Bio- intensive module, (100% organic): Azardirachtin 10000ppm@1.0mlL, Lecanicillium (Verticillium) lecani @ 5g/L, Bt @ 1ml/L, Beauveria bassiana 5 g/l. The treatments in the IPM module M-II comprised of Azardirachtin 10000ppm@1.0mlL, Lecanicillium (Verticillium ) lecani @ 5g/L, Chlorantrinilipole 20 SC @0.25ml/L. M-III: Chemical module (100% chemical): Azardirachtin 10000ppm@1.0mlL Dimethoate @ 1.7ml/L, Thiamethoxam 25 WG @ 0.2g/L, Chlorantrinilipole 20 SC @0.25ml/L. M-IV: POP : Quinalphos 25 EC @ 2.0ml/L. M-IV: Quinalphos. M-V: Untreated control. The observed percent fruit damage and pooled analysis of 2017-18 and 2018-19 revealed that the percent mean shoot and fruit borer infestation during fruiting phase was 9.49 in IPM module (M-II). The chemical module recorded significantly lesser fruit infestation (7.24). The IPM module recorded 14.14 tonnes/ha fruit yield with highest B:C ratio against shoot and fruit borer. Further, highest B:C ratio (3.71) was recorded in M-II followed by M-III (3.55) and M-I (1.91). Hence, M-I in comparison with M-II and M-III seemed to be a quite promising strategy as it did not require much insecticidal interference, reduced of insecticidal residue problem and safe to bees and natural enemies.
DOI: 10.22271/chemi.2020.v8.i5d.10539
Pages: 188-190 | 726 Views 151 Downloads
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How to cite this article:
Suvarna Patil, Arunkumar B, Renuka H, Poornima H, Shridhar D and Padanad LA. Evaluation of IPM modules against shoot and fruit borer in Okra. International Journal of Chemical Studies. 2020; 8(5): 188-190. DOI: 10.22271/chemi.2020.v8.i5d.10539
