Evaluation of the effectiveness of the pesticide (Adengo 465 sc) in controlling the weeds associated with yellow corn (Zea mays L.) and its effect on growth characteristics and yield during the spring and autumn seasons.

Abstract

This study was carried out to weed control associated the maize in the Rashidiya area inone of the northern of the city of Mosul, Nineveh Governorate in agricultural season in the 2021AD in the northern region of Iraq to evaluate the efficiency of herbicide that was recentlyintroduced into Iraq. The study included two factors: the first factor was the use of the herbicide(Adengo) in three concentrations (200, 300, 400 ml. h) and a weeds-free treatment (hoeingthroughout the growing season) and a control treatment. two cultivars of maize were used : As forthe second factor the first local ( governmental variety) ، the second is an imported hybrid (Dk5060) . As the seasons (the date of sowing) were entered as a third factor in the aggregate analysis.The statistical analysis was conducted by designing randomized complete sectors according to theglobal experiment system. Duncan’s multi-range test was used using the computer according tothe (SAS) program. The results were summarized as follows: Adengo herbicide concentrated (400ml. H) showed significant superiority in eliminating thin and broad-leaved weeds and reducingthem when flowering،The efficiency of Adengo herbicide was equal at a concentration of (300,400 ml. ha) as it did not differ significantly despite the superiority of the concentration of (400 ml.ha) in the autumn season،The superiority of the herbicide at a concentration of (400 ml. H) in mostof the growth characteristics of the crop،The use of the herbicide at a higher concentration thanrecommended led to an increase in weeds killing, as its efficiency in reducing the dry mass of theweed was (71%) and its efficiency in reducing the weed density was (75%) compared to the controltreatment، It was observed that the efficiency of the weed-free treatment and the Adengo herbicideat a concentration of (400, 300) ml was equal in many characteristics the number of rows in theear. and the percentage of protei