Abstract
A field experiment was conducted from 2017 to 2018 to determine the chemical herbicides which can best perform against Striga in sorghum fields of Jeldu district, West Shoa Zone. The experiment was carried out in randomized complete block design with three replications. Result obtained indicted that, sorghum plant height, stock biomass, grain yield and thousand seed weight showed significantly different (P<0.05) among treatments. The highest mean plant height (240.92 cm), stock biomass (13967 kg/ha), grain yield (886.2 kg/ha) and thousand seed weight (24.3 g) were recorded from the sequential application of Metalachlor 960 EC + 2, 4-D as compared to weedy check. The lowest Striga height (31.917 cm) was recorded from sequential application of Metalachlor 960 EC + 2, 4-D. Similarly the lowest Striga biomass were recorded from farmers practice followed by kerosene (for seed dressing) and sequential application of Metalachlor 960 EC + 2, 4-D. Therefore, sequential application of Metalachlor 960 EC + 2, 4-D is recommended as one component of integrated Striga management in sorghum field. Keywords: Sorghum bicolor L, Striga hermonthica, Dual gold and 2, 4-D DOI: 10.7176/JBAH/10-16-03 Publication date: August 31 st 2020
Highlights
Ethiopia is the home of origin for sorghum varieties cultivated worldwide
Sequential application of Metalachlor 960 EC + 2, 4-D is recommended as one component of integrated Striga management in sorghum field
The highest mean plant height, stock biomass and grain yield were recorded from the sequential application of Metalachlor 960 EC + 2, 4-D as compared to weedy check
Summary
Ethiopia is the home of origin for sorghum varieties cultivated worldwide. Sorghum is one the most important cereal in the world, only exceeded by wheat and rice as staple food in the tropics and raw materials for many industrial products in Ethiopia.Striga hermonthica that belongs to Orobanchaceae family is one of the cereal crops root parasite often causing 30-100% crop losses on farmers’ fields throughout the world (Ouedraogo, 1992). Ethiopia is the home of origin for sorghum varieties cultivated worldwide. Sorghum is one the most important cereal in the world, only exceeded by wheat and rice as staple food in the tropics and raw materials for many industrial products in Ethiopia. Striga hermonthica that belongs to Orobanchaceae family is one of the cereal crops root parasite often causing 30-100% crop losses on farmers’ fields throughout the world (Ouedraogo, 1992). It is an important biotic constraint to sorghum and maize crop production, and the weed that farmers fear the most (Ramaiah, 1985). Striga species threaten the lives of over 100 million people in Africa and it infest about 40% of arable land in the Savannah region arable land causing a loss of US$ 7 to 13 million. As Baguma and Bigirwa (1996) estimated an economic loss of US$ 8 million a year
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