作物科技进展

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Evaluation of Non Selective Post Emergence Herbicides against Complex Weeds at Metahara Sugar Estate: Verification Trial

Amrote Tekle, Tolessa Taye Yonas Worku

Four candidates of non-selective post-emergence herbicides were evaluated against complex weed management at Metahara sugarcane estate. The evaluation was done based their efficacy and the experiment was laid in RCBD with three replications. The experiment was evaluated using irrigated condition for 50 and 60 days. The result of the experiment revealed the three candidates provides good efficacy to control the grass weed for more than 40days. The efficacy of broad weed was varies from weeds to weeds. The test herbicides provide good control for broad weed namely Biden pilosa, Chenopedium, ageratumconzoids, Xanthium species and Amaranthus weeds. The efficacy of sedge grass was not seen well in this evaluation because the population level of this weed very from zero to very low number in the plot area. The overall efficacy of the candidate herbicides were good trust agro state 360 SL with efficacy control of 86.49%, followed Linkosate 48 with efficacy level of 82.98% and Getrid 480 SL with 81.23%. Based on overall and species based efficacy the three namely, Trust agro state 360 SL, Linkosate 48 SL and Getrid 480 SL non- selective post emergence herbicides at Metahara were effective to control citrus fields, mango orchard and other non-farms likes canal clearing with supplementing manual method for uprooting some weed species likes field bind weed and parthenium weed particularly according to their order. In future research activity it is better to evaluate the different rates against specific weed management weeds like field bind, parthenium and Euphorbia weeds for better effectiveness.