N Save Nature to Survive 9(1): 291-294, 2014 (Supplement on Plant Pathology) www.thebioscan.in 291 INTEGRATED MANAGEMENT OF WILT COMPLEX INVOLVING MELOIDOGYNE INCOGNITA AND RALSTONIA SOLANACEARUM ON BRINJAL (SOLANUM MELONGENA L.) S. PAVITHRA* AND RAHEESA KHATIB Department of Plant Pathology, UAS, GKVK, Bengaluru - 560 065 e-mail: pavithra4157@gmail.com INTRODUCTION Brinjal ( Solanum melongena L.; 2n = 24) belong to the Solanaceae family, are native to the South East Asian region and were first domesticated there over 4000 years ago. It is one of the most important vegetables worldwide, with a global production 431.74 lakh tones and 17.28 lakh ha area harvested, in 2010-11. India ranked second in brinjal production. In India Brinjal ranked third in vegetable crops in terms of production (118.96 lakh tones) and area harvested (6.8 lakh ha), respectively in the year 2010-11 (Anonymous 2011). Brinjal is rich in antioxidant compounds and have hepatoprotective properties (Bhat et al., 2013). Bacterial wilt of brinjal caused by Ralstonia solanacearum is prominent diseases and could cause yield loss up to 80 per cent (Rao et al., 1975). It has been proved that root knot nematode facilitates entry and establishment of pathogenic fungi and bacteria (Powell, 1971). In recent years, the disease complex due to M. incognita and R. solanacearum has been gaining economic importance in brinjal cultivation (Ravichandra et al., 1990). The main aim of this study was to identify the efficacy of different treatments on wilt complex under field condition. MATERIALS AND METHODS The experiment was conducted at M. incognita and R. solanacearum infested sick plot of AICRP (N), ZARS, University of Agricultural Sciences, GKVK, Bengaluru. Initial population of second stage juvenile (J2) of M. incognita and population of R. solanacearum in the experimental field were determined from six random soil samples. This experimental plot was divided into microplots of 2×2 m 2 size. Seedlings of brinjal cultivar Arka Shirish (susceptible to both pathogen) were raised separately in healthy plot. Following treatments were imposed. Mustard seeds were sown in between furrows one week before transplanting of seedlings, neem cake was applied 15 days before transplanting. P. fluorscens and T. viride were applied before one week of transplanting. 16.6 g of carbofuran was applied to 1 m 2 of designated microplots in furrows and mixed well with the soil before one week after transplanting of brinjal seedlings. Streptocycline 0.5g/L, COC 50%WP (1g/L) were drenched in the standing crop one week after transplanting. The plot without any component was designated as control. Carbofuran 3G was maintained as standard check. Ranomized complete block design was employed with three replications for each treatment (Hussain and Bora, 2008). Treatments T 1 = Mustard as an intercrop T 2 = Pseudomonas fluorescens @ 20g/m 2 (1×10 8 cfu/ g of soil) T 3 = Trichoderma viridae @ 20g/m 2 (2×10 6 cfu/g of soil) T 4 = Neem cake (100 g/ m 2 ) T 5 = Streptocycline (0.5 g/ L) T 6 = Mustard intercrop+ Pseudomonas fluorescens @ 20g/ m 2 (1×10 8 cfu/g of soil) T 7 = Mustard intercrop+ Trichoderma viridae @ 20g/m 2 ABSTRACT An experiment was conducted in the farm of the Department of Plant Pathology, GKVK, Bangalore to test the effect of different treatments on management of wilt complex of brinjal under local conditions. Among different treatments tested Integration of mustard as an intercrop, streptocycline and COC were found superior against Meloidogyne incognita and Ralstonia solanacearum wilt complex in brinjal under field conditions. Among the treatments tested to manage wilt complex under field condition, mustard intercrop + streptocycline @ 0.5 g/lit + COC 50% WP (1g/lit) reduced bacterial wilt incidence (23.35%). It recorded 63.33 galls/root system which accounted to 72.54 per cent reduction over control and recorded an yield of 1.92 kg/25 m 2 followed by mustard intercrop + P. fluorescens @ 20g/m 2 (1×10 8 ) which was effective in reducing wilt by 28.35 per cent. It recorded 51.66 galls/root systems which accounted to 77.60 per cent reduction over control and recorded yield of 1.78 kg/ 25 m 2 . KEYWORDS Meloidogyne incognita Ralstonia solanacearum Trichoderma viridae and Pseudomonas fluorescens Received on : 01.10.2013 Accepted on : 22.02.2014 *Corresponding author