TY - JOUR AU - Mutebi, Chrispo AU - Musyimi, David M. AU - Opande, George T. PY - 2021/03/31 Y2 - 2024/03/29 TI - Effect of Cercospora piaropi Tharp and Myrothecium roridum Tode Fries Formulated as Corn Oil Emulsion on Water Hyacinth Shoot Growth under Greenhouse Conditions JF - Archives of Ecotoxicology JA - Arch. Ecotoxicol. VL - 3 IS - 1 SE - Research Paper DO - 10.36547/ae.2021.3.1.9-12 UR - https://office.scicell.org/index.php/AE/article/view/206 SP - 9-12 AB - <p>A study was done to find out the comparative effect of <em>Cercospora piaropi </em>Tharp and <em>Myrothecium roridum</em> Tode Fries formulated as corn oil emulsion on water hyacinth shoot growth and biomass under greenhouse conditions. The study site was located in Kibos at latitude 0<sup>0</sup>37’S and longitude 37<sup>0</sup>20’E with average temperature of 25 to 30<sup>0</sup>C and 22 to 27<sup>0</sup>C during the day and night respectively, and 60 to 69% relative humidity. Healthy water hyacinth plants were inoculated with the pathogens formulated in corn oil at 1x10<sup>9</sup>, 1x10<sup>8</sup>, 1x10<sup>7</sup>, 1x10<sup>6</sup> and 1x10<sup>5</sup>spores/ml.  The control plants were not inoculated. The experiment was set up in completely randomized design (CRD) with each treatment replicated three times. At weeks 2, 4, and 6 after inoculation, the average shoot length and biomass for the treated basins were separately compared to the average shoot length and biomass of the control plants. Increase in spore density for both pathogens significantly increased relative shoot length and relative biomass.  Relative shoot length was 55.07 and 51.93 for <em>C. piaropi</em> and <em>M. roridum</em> respectively at 1x10<sup>9</sup> spores/ml while relative biomass was 73.53 for <em>C. piaropi</em> and 37.60 at 1x10<sup>9</sup> spores/ml. Inoculation suppressed shoot elongation and biomass with 1x10<sup>9 </sup>spores/ml being most effective. <em>Cercospora piaropi </em>formulated in corn oil lowered shoot length and biomass of water hyacinth more than <em>M. roridum</em> did.</p> ER -