In present research work Sixteen different isolates of Xanthomonas axonopodis pv. citri were tested on different acid lime cultivars. The pathogenicity was confirmed by reaction of these isolates on different citrus cultivars by inoculation. It was found that variety Chankradhar was most susceptible to all the isolates of Xanthomonas axonopodis pv. citri and expressed symptoms in 3 -10 days after inoculation. Xac1 and Xac12 produced symptoms on cultivar Chankradhar 3 days after inoculation followed by Xac 2, Xac11 and Xac16. However, only two Xac isolates viz. Xac12 and Xac 13 were produced symptoms on cultivar Bagalipattu and expressed symptoms within 4 day of inoculation. The isolate Xac12 and Xac14 represented distinct nature of virulence as it initiated water soaked lesion within three to six days. Tahiti was found resistant against all isolates as none of the isolate was able to cause the disease.

In present research work eight different isolates of Xanthomonas axonopodis pv. citri were tested on different acid lime cultivars. The pathogenicity was confirmed by reaction of these isolates on different citrus cultivars by inoculation. The water soaked lesions along with fully developed symptoms were developed after 9 to 12 days of inoculation. The Xac1 was highly virulent and Xac2, Xac4, Xac5, Xac6 were poor virulent and Xac3, Xac7, Xac8 were moderately virulent.

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The present investigation entitled "Studies on effect of chemicals on success of cuttings in passion fruit (Passiflora edulis Sims)" was carried out at the Instructional Cum Research Farm, Department of Horticulture, College of Agriculture, Badnapur during the year 2015-2016. The experiment was laid out in Randomized Block Design with thirteen treatments replicated thrice, comprising three treatments of IBA concentrations i.e. (500, 750 and 1000 ppm), three treatments of NAA concentration i.e. (500, 750 and 1000 ppm), three treatments of Salicylic acid concentration i.e. (1500, 2000 and 2500 ppm), three treatments of Ethanol concentration i.e. (10, 30 and 50 %) and control. The results of present study indicated significant differences with shoot and root growth observations viz., number of shoots per cuttings (7.33), shoot diameter (1.97 cm), number of leaves per cuttings (5.20), leaf area (24.92 cm 2 ) superior in treatment T 1 (IBA 500 ppm). However, in treatment T 3 (IBA 1000 ppm) days taken for sprouting (3.77days), number of sprouted cuttings (45.34%), shoot thickness (1.76 cm), shoot length (30.00 cm), number of leaves per cuttings (5.10), leaf area (23.83 cm 2 ) was observed significantly better. Application of chemical treatment viz., passion fruit cuttings dipping in IBA 1000 ppm solution, 1-2 cm (at the lower portion) for 3-5 seconds to be beneficial for maximum growth and survival percentage.