Efficacy of Bio-Intensive integrated pest management against brinjal shoot and fruit borer &lt;i&gt;Leucinides orbonalis&lt;/i&gt; (Lepidoptera: Crambidae)

R. F. Niranjana,R. P. Sridhar,M. Devi

doi:10.4038/agrieast.v13i1.60

Abstract

Brinjal (Solanum melongena) plays a vital role in the food of South-Asian people, thus the production of brinjal in these countries is quite high. However the production of brinjal does not satisfy the whole demand of people owing to the severe infestation by L. orbonalis. In order to get maximum yield from the cultivation farmers rely on over and indiscriminate use of chemical insecticides. Due to the side effects of over and indiscriminate use of toxic insecticides, now the trend moves towards Bio-intensive Integrated Pest Management (BIPM). The present study conducted to find the efficacy of BIPM over farmer’s practices and untreated control in controlling the L. orbonalis. The study evidenced the superiority of BIPM in all aspects viz., lesser shoot infestation (15.82 percent), greatest yield (17,170.22 kg/ha) and higher natural enemies activities (5.25 no./10plants), which was equivalent to untreated control. Besides the treatment BIPM proved its efficacy over farmer’s practice and untreated control especially with high percent increase of yield (63.90%), percent reduction of shoot (64.01%) and fruit infestation (80.58%), and less percent reduction of natural enemies’ population (8.70%). Apart from this the benefit cost ratio (BCR) ranked in the order of superiority as BIPM module (1:5.75), which was greater than the farmer practice (1:4.96) on brinjal.

Highlights

The brinjal (Solanum melongena) is the native to Indian Subcontinent (Tsao and Lo 2006; Doijode 2001) and belongs to the family Solanaceae (Nightshade)
Components Spraying of Thiacloprid 21.7% SC @ 2.0 g/lit or Chlorantraniliprole 18.5% SC @ 4.0 ml/10lit or Flubendiamide 20% WG @ 7.5 g/10lit at five days interval on brinjal Installation of sex pheromone traps (Lucin-Lure ) @ 5 per ac for monitoring Releasing of Trichogramma pretiosum or T. embryophagum @ 100,000 eggs / ac in an alternate manner at 10days interval from 15 days after transplanting Spraying of Acetamipride 20% SP @ 2 g/10l Spraying of entomopathogens Lecanicillium lecanii @ 2 x 109 conidia per ml Spraying of NSKE 5% Spraying of Chlorantraniliprole 18.5% SC @ 4.0 ml/10lit No treatments
Bio-intensive Integrated Pest Management (BIPM) module evaluated against L. orbonalison brinjal recorded a lesser shoot and fruit infestation of L. orbonalis (15.82 per cent) as compared to farmer's practice (17.31 per cent) and untreated control (43.92 per cent) (Table 3) at the end of picking

Summary

1.Introduction

The brinjal (Solanum melongena) is the native to Indian Subcontinent (Tsao and Lo 2006; Doijode 2001) and belongs to the family Solanaceae (Nightshade) It contributes 9% of the total vegetable production of India (Sidhu and Dhatt, 2007). Indiscriminate use of pesticides in brinjal resulted in development of resurgence of secondary pests such as whitefly, mites and thrips (Krishnakumar and Krishnamoorthy, 2001). By considering these drawbacks in brinjal cultivation, the present study was carried out to assess the efficacy of Biointensive Integrated Pest Management against L. orbonalis

Materials and Methods

BIPM module

Parameters measured

Data Analysis

Results and Discussion

Conclusion