Major weeds and farmers' weed management practices in rainfed ricefields of Negros Island, Philippines
2014
Donayre, D.K.M. | Endino, C.U. | Seville, C.U. | Ciocon, I.M.G.
This study was conducted in Negros Island, Philippines to: (a)determine the different weed species present in rainfed lowland rice areas of this island; (b)determine the most dominant weed species present in threat, and (c)determine the existing weed management practices commonly used by farmers in rainfed lowland ricefields of Negros. Fourteen weed species were recorded, namely: Fimbristylis millacea (L.) Vahl., Ischaemum rugosum Salisb., Cyperus difformis L., C. iria L., Ludwigia octovalvis (Jacq.) Raven., Hydroleza zeylanica (L.) Vahl., Echinochloa glabrescens Munro ex Hook. f., Cynodon dactylon L., Monochoria vaginalis (Burm. f.) C. Presl., Leptochloa chinesis (L.) Nees, Paspalum distichum L., P. conjugatum L. Eclipta prostrata (L.) L., and Sphenoclea zeylanica Gaertin. Among these weed species, F. milacea was the most abundant. Handweeding and good water management were the most commonly employed weed control practices among farmers that followed transplanting method, while combination of herbicides and few follow-ups of handweeding for those farmers that followed direct-seeding method.
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