Observations on helminthosporium and cercospora leaf spots of forage grasses and on sunflower leaf spots

Littlejohn, Lewis J.S.2016-07-122016-07-12https://hdl.handle.net/2139/42441Grasses -- Diseases and pests -- Trinidad and TobagoPennisetum purpureum -- Diseases and pests -- Trinidad and TobagoGuinea grass -- Diseases and pests -- Trinidad and TobagoSunflowers -- Diseases and pests -- Trinidad and TobagoLeaf spots -- Trinidad and TobagoHelminthosporium -- Trinidad and TobagoCercospora -- Trinidad and TobagoObservations on helminthosporium and cercospora leaf spots of forage grasses and on sunflower leaf spotsTheses