Influence of Weather Parameters on Incidence of Black Spot of Papaya Caused by Asperisporium caricae

The severity of the black leaf spot disease of papaya increased with increase in rainfall and during dry spells the disease declined considerably. The maximum disease severity was found during the late winter and spring seasons of the year. In the present study, the disease severity of black spot of papaya was recorded in the TNAU, Orchard at monthly interval for a period of one year from January to December 2018. The results revealed that the disease severity increased progressively from August to November 2018 and the disease was found to be less in summer months. The disease severity was found to reach maximum of 31.21% during the November 2018. The lowest disease severity of 9.45% was found during the month of May 2018

In-vitro Evaluation of Different Fungicides against Black Leaf Spot Causing Fungus Asperisporium caricae in Papaya

Ten different contact, systemic and combination products of fungicides were evaluated for their effectiveness against black spot of papaya Asperisporium caricae under in vitro condition by following poisoned food technique. Among fungicides tested, trifloxystrobin 25% + tebuconazole 50% WG, propiconzole 25% EC and zineb 68% + hexaconazole 4% WP were successful in completely (100%) inhibiting the growth of A. caricae at all concentrations (50,100, 250, 500, 750, 1000 ppm) which is followed by hexaconazole 25% EC, difenconazole 25% EC, zineb 68% hexaconazole 4% WP completely inhibited the growth of the fungus at 500 ppm and above concentration. Least inhibition of fungal growth was recorded in copper oxychloride 50% WP at all concentrations. Trifloxystrobin 25% + tebuconazole 50% WG, propiconazole 25% EC and zineb 68% + hexaconzole 4% WP were most effective which completely inhibited the spore germination at all concentrations, while the copper oxychloride 50% WP was recorded the least per cent inhibition of fungal spores

Analgesic activity of methanol extract of <i>Eupatorium adenophorum </i>Spreng. leaves

662-663The methanol extract of the leaves of E. adenophorum (100, 200 and 300 mg/kg, po) showed significant analgesic activity, as compared to standard drugs diclofenac sodium and pentazocine, employing acetic acid-induced writhing test, tail immersion test and tail flick test models