Evaluation of herbicides for the control of brome grass in wheat in south-eastern Ethiopia
2000
Maru, S. | Girma, K. (Kulumsa Agricultural Research Center, Asella (Ethiopia)) | Tanner, D.G. (Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Addis Ababa (Ethiopia))
Brome grass (Bromus pectinatus) is a major grass weed in wheat for which no chemical control is currently available in Ethiopia. As a result, small-scale farmers suffer dramatic grain yield losses in infested fields. A weed control trial comparing two new herbicides, applied at different rates and timings, with a weedy check was conducted on seven fanners' fields in S.E. Ethiopia during the 1999 cropping season. Sulfosulfuron (post) applied at 30 9 a.i. ha-l resulted in 91 and 65% control of brome grass at Asasa and Etheya, respectively. The combination of sulfosulfuron (post) at 22 9 a.i. ha-l plus ethiozin (pre) at 1.6 kg a.i. ha-l also exhibited good control of brome grass. Applying sulfosulfuron (post) at 22 9 a.i. ha-l, sulfosulfuron (post) at 30 9 a.i. ha-1 , and sulfosulfuron (post) at 22 9 a.i. ha-l plus ethiozin (pre) at 1.6 kg a.i. ha-l produced grain yield increments of 101-140% and 61-120% relative to the weedy check at Asasa and Etheya, respectively. The herbicidal chemicals sulfosulfuron and ethiozin exhibit significant potential to control problematic grass weeds including brome grass in the wheat growing areas of Ethiopia. As brome grass exhibits special adaptive characteristics such as a high rate of seed production and early maturity relative to the wheat crop, herbicidal control should not be considered as the only option. Thus, it is recommended to conduct additional research to confinn the results of this experiment and to devise an integrated approach to the control of brome grass.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by International Maize and Wheat Improvement Centre