Comparison of the effectiveness of broadcasting, bagging and compost cribs as methods of pond fertilization of organic manure on growth and survival of Oreochromis shiranus

摘要

Thisexperimentwascarriedoutinearthenpondsof200m2atBundaCollegeofagriculturestudents#8217;farmtocomparetheeffectivenessofbroadcasting,baggingandcribasmethodsofpondfertilizationoforganicmanureongrowthandsurvivalofOreochromisshiranusfor90days.Thereweresignificantdifferences(P0.05)ingrowthoffishbetweentreatmentswithcribmethodshowinghighergrowthoffishandhadfinalmeanweightof23.9±1.32gfollowedbybaggingmethodwhichhadthefinalmeanweightof20.9±2.31gandfinallybroadcastingmethodwithfinalmeanweightof19.91±3.09g.Therewerenosignificantdifferences(P0.05)betweenthetreatmentsinamountofchlorophyllawhenbroadcasting,baggingandcribmethodwereusedandalsosurvivalratedidnotshowanysignificantdifferences(P0.05).Theresultsoftheexperimentwouldhelpthesmall-scalefishfarmerstousecribsintheirpondsasawayoffertilizingthepondstoattainhigheryields.