The effect of different rootstocks on eggplant growth, fruit yield, and fruit quality were studied by comparing grafted plants with nongrafted ones under low cost polyhouse. The present investigation was carried out in the year, 2014-15, Experimental Farm, Department of Vegetable Science, College of Horticulture and Forestry (CAU) Pasighat. The experiment was laid out in Completely Randomised Design with 8 treatments (four wild Solanum species and two eggplant genotypes) and four replications. The seedlings of eggplant genotypes with pencil thickness were grafted with wild Solanum species by cleft method. The non-grafted plants were used as control. The highest survival rate observed in plants grafted with Solanum torvum followed by Solanum surathense. The plant morphology, reproductive and yield parameters were significantly affected by grafting. Control plants recorded minimum plant height with least number of leaves per plant. Furthermore, fruit weight, fruit yield, days to fruit maturity and rooting behaviour of plant were influenced positively by grafting. All grafted plants showed superior rooting and highest number, length, fresh weight and dry weight of roots were recorded in Solanum torvum followed by solanum khasianum. Based on mean performance, grafted plants of Solanum torvum and Solanum khasianum found to be superior for plant growth and yield attributing characters without effecting fruit quality. So, it can be concluded that grafting in eggplant is quite successful and alternate method of production.

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Wilt in brinjal has become more damaging in the red lateritic soil of Jharkhand due to the prevalence of Fusarium oxysporum and Ralstonia solanacearum making it wilt complex disease. Out of six organic amendments tested soil application of neem cake (5q/ha) proved to be the most effective treatment to minimize wilt incidence (26.3%) and increased fruit yield (19.23 kg/plot). Among the five fungicides viz; carbendazim, mancozeb, tricyclazole, blitox, oxathiin and streptocycline, seedling dip with mancozeb (2.5g/l) was most effective and showed least wilt incidence (24.21%) with highest fruit yield (21.59 kg/ plot) which was significantly at par with blitox-50. Among four bioagents viz; Trichoderma viride (TvD) Delhi isolate, Trichoderma harzianum Ranchi isolate(ThR), Trichoderma harzianum (ThD) Delhi isolate and Pseudomonas fluorescens Delhi (PfD) isolate soil application of precolonized ThD proved to be most effective in reducing wilt severity (16.15%) and highest fruit yield (24.79 kg/plot)were recorded. In the integrated approach of chemicals with bioagents and organic amendments under field condition among all the combinations, minimum wilt incidence (20.34%) was recorded in neem cake precolonized with ThD + seedling dip in copper oxychloride (0.3%). This treatment also provided the highest fruit yield (24.97 kg).

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