FUW TRENDS IN SCIENCE & TECHNOLOGY JOURNAL
(A Peer Review Journal)
e–ISSN: 2408–5162; p–ISSN: 2048–5170
keywords: Cercospora sp., growth, incidence, plant extracts, sesame, varieties
Field trial was conducted at Ardokola and Gassol in 2012 to investigate the influence of four cultivars (Yandev 55, NCRIBEN 01M, E8 and NCRIBEN-03L) and five plants extracts (Azadirachtaindica, Jatrophacurcas Linn., Aliumsativum, Ocimumgratissimum L., Chromolaenaodorata) and Benomyl including unsprayed control on Cercosporasesami on sesame growth parameters. The trial was designed using randomized complete block design (RCRD) in a split plot arrangement in allocating treatments to plots which was replicated four times. In both locations sesame plants were sprayed with 10% extracts once in every two weeks using hand sprayer from 4 to 10 weeks after sowing. Results obtained showed that Sesame variety E8, which was statistically the same with NCRIBEN-01M, gave the lowest combined analysis incidence of 60.39 %, than Yandev 55 (71.63 %) and NCRIBEN-03L (71.50 %). Furthermore, the synthetic fungicide Benomyl, which was statistically similar to the plant extracts (Ocimumgratissimum, Chromolaenaodorata), produced the lowest combined analysis incidence (61.99%) than unsprayed control (78.90 %). Similarly, interaction effect indicated that E8 seedlings sprayed with plant extract from Ocimumgratissimum and Chromolaenaodorata gave the lowest incidence (56.94%) and infection rate (0.026 units per day), compared with the highest incidence (87.43 %) and infection rate (0.0028 units per day) obtained from unsprayed plants of Yandev 55 variety. This had resulted in highest increase of plant height from 108.88 to 160.33 cm and branches per plant from 1.96 to 4.04. In this study it could be seen that the performance of the plant extracts is comparable to the synthetic fungicide Benomyl, and therefore this has given the farmers ample opportunities to try many alternatives that are user friendly.
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