Home > Crops & Livestock > Crops > Rice > Weed Control > New Options for Managing Weeds in Clearfield Rice [Image: control plot,] The development of Clearfield rice, which is tolerant to imidazolinone herbicides, is the most important advance in rice weed management in recent years. Grasp: A New Herbicide for Managing Weeds in Rice [Image: chart] LSU AgCenter weed scientists began working with Grasp in 2003, but it wasn’t until 2004 that in-depth research could be conducted because of limited product availability. Parts Of Grass Spikelet [Image: dissected and labeled grass spikelet] A photograph of a labeled grass spikelet. Water Starwort (Callitriche heterophylla) [Image: water starwort leaves] Photographs of water starwort (Callitriche heterophylla).  more articles... Mannagrass (Glyceria declinata) [Image: Mannagrass spikelets] Photographs of mannagrass (Glyeria declinata) and some of its parts. Swamp Dayflower (Murdannia keisak) [Image: photographs of swamp dayflower plants] Photographs of Swamp Dayflower (Murdannia keisak syn Aneilema keisak). Red Sprangletop (Leptochloa filiformis) [Image: single panicle of red sprangletop] Photographs of red sprangletop (Leptochloa filiformis) Amazon Sprangletop (Leptochloa panicoides) [Image: single plant of Amazon Sprangletop] Photographs of Amazon Sprangletop (Leptochloa panicoides) Ducksalad (Heteranthera limosa) [Image: Ducksalad in flower] photograph of ducksalad in flower and compared to Roundleaf Mud Plantain Roundleaf Mudplantain (Heteranthera reniformis) [Image: photograph of single roundleaf mudplantain plant] Photographs of roundleaf mudplantain (Heteranthera reniformis) and in comparison to ducksalad (H. limosa) Hedge Hyssop (Gratiola sp.) [Image: Hedge Hyssop in a rice field] Photographs of Hedge Hyssop plants. Alligatorweed (Alternanthera philoxeroides) [Image: mat of alligator weed] Photographs of alligatorweed and its parts. Jointvetch (Aeschynomene sp.) [Image: Jointvetch seedlings] Photographs of Jointvetch (Aeschynomene sp.) and its parts. Texasweed (Caperonia palustris) [Image: Texasweed flower] Photographs of Texasweed a.k.a. Mexicanweed, Birdeye More...