Kwara State University
Emmanuel Imoloame
Designation: Associate Professor
Department: Crop Production
| My Publications | ||||||||
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| S/N | Title | Abstract | Authors | Volume Numbers | Publication Type | Publication Date | Link | |
| 1 | Herbicide Evaluation for Weed Management in Rice (Oryza sativa L.) in Nigerian Savanna. A Review |
Rice is considered the most important staple food in the world as it supplies the major food requirements for more than one half of the world's population. Of all the constraint, limiting the production of this crop. weeds appear to have the most deleterious effect causing between 75 and 100% reduction in potential paddy rice yield. Data for this review were obtained from the research conducted in the northern Guinea savanna (lat. 11° 11'N. long..07° 38'E) in 1993 and 1994 and 1996 and 1997, in the southern Guinea savanna (lat..7° 41'N. long... 8° 37'E 'E) in 2000 and 2001. and in the Sudan savanna (lat. 11° 30'N. long..8 2'E) zone of Nigeria in 2008 and 2009. The objective was to evaluate different her bicides for the management of weeds in rice. In northern Guinea savanna, it was observed that a formu lated mixture of piperophus + propanil at 3.95 kg a.i./ha applied post-emergence at 14 days after sowing (DAS), oxadiazon at 1.0 and 1.5 kg a.i./ha, dimethymethryne at 1.0 kg a.i./ha and diflufenican at 0.3 kg a.i./ha were found to be effective in controlling weeds and they also produced significantly higher grain yields comparable to two or three hoe weedings. In the southern Guinea savanna, it was observed that conventional tillage treated with herbicide mixture of propanil + 2.4-D at 2.16+ 1.44 kg a.i../ha controlled weeds effectively and produced higher rice grain yields comparable to one or two hoe weedings. However, minimum tillage treated with glyphosate at 2.52 kg a.e./ha followed by application of 2.4-D at 21 days after sowing (DAS) at 1.44 kg a.e./ha resulted in highest monetary profit. In the Sudan savanna. Butachlor + propanil, at 2.4+0.8 kg a.i./ha and 2.4-D+ propanil at 1.44+0.8 kg a.i./ha were not only effective in the control of weeds but resulted in significantly higher rice yield. From this review, application of the herbicides mentioned under each agroecology above, could serve as alternatives to hoe weeding at 3 and 6 WAS. | E. O. IMOLOAME | 12(2): 247-260 | Journal Article | 2011-12-09 | https//www.njeab.com | |