Influence of chlorsulfuron and 2,4-D on management of Striga hermonthica on sorghum, Dr. Rashida Abusin, Elfatih Ahmed, Babiker Mahgoub and Prof. Abdelgabbar Babiker
Dr. Rashida Abusin*
University of Bahri, Pests and Plant Health, Sudan
Agricultural Research Corporation (ARC), Protection, Sudan
Babiker Mohammed Mahgoub and Prof. Abdelgabbar Babiker
Environment and Natural Resources and Desertification Research Institute, Biological Control, Sudan
Purpose: This study was conducted to determine the herbicidal efficacy of chlorsulfuron, 2, 4-D and their tank mixtures on Striga incidence and sorghum growth and yield.
Design/Methodology/Approach: The experimental area was disc ploughed, harrowed, levelled, ridged and divided into 4 x 8m sub-plots, with four rows in each. The crop was sown in the first week of July. Sorghum seedlings were thinned to two per hole, 15 days after emergence. Treatments were laid out in a Randomised Complete Block Design (RCBD) with four replicates.
Findings: Striga emergence in the untreated control was 1, 6 and 25 plants/m-2 at 45, 60 and 90 days after sowing (DAS). Chlorsulfuron at 2.38-3.75g a.i. ha-1 reduced Striga emergence by 84-88%. 2, 4-D at 0.38-0.76kg a.e. ha-1 reduced Striga emergence by 20-64%. The tank mixtures of chlorsulfuron and 2, 4-D reduced Striga emergence by 64-76%.
Originality/value: The results indicate an antagonistic interaction between chlorsulfuron and 2, 4-D.
Keywords: Striga, Chlorsulfuron, 2, 4-D, Management, Sorghum, Yield.