Abstract

The newly introduced pre-verification trial of bastnate plus herbicide against weeds in coffee was conducted in Jimma agricultural research center, Agaro and Gera sub-center in 2022 cropping season to evaluate the efficacy of newly introduced chemicals and determine appropriate rate of bastnate plus compared with kalach 360 SL as a standard check. The experiment was laid out in a randomized complete block design with three replications. The treatments were consisted of bastnate plus at the rate of company recommendation 1L/ha, 50% above company recommendation 1.5L/ ha, 50% below company recommendation 0.5 L/ha, kalach 360 SL as standard check and weedy control. The result revealed that application of bastnate plus at the rate of 1.5 L/ha effectively controlled annual, perennial and biennial broad leaves, grasses and sedge weeds in all locations. The higher weed control efficiency and lower weed population was recorded from the application of bastnate plus 1.5 L/ha than other bastnate rates but, almost similar with kalach 360 SL standard check. Therefore application of bastnate plus 50% above company recommendation (1.5 L/ha) with 250 Lt volume of water was recommended to proceed to the next verification stage against weeds in coffee