Investigation the effect of reduced doses of total herbicide (Metsulfuron methyl+Sulfosulfuron) on the control of Japanes brom (Bromus japonicus) in wheat
Subject Areas : Weed Research Journal
Mansoor Sarani
1
(Plant Protection Research Department, Sistan Agricultural and Natural Resources Research and Education Center, AREEO,,Zabol, Iran)
Mohammad Ali Baghestani Meybodi
2
(Iranian Resesrch Institute of Plant Protection, AREEO, Iran)
Keywords: Japanese brome, Chemical control, Reduced doses, Total, Wheat,
Abstract :
Bromus is one of the most important weeds in wheat fields in Sistan and Baluchistan province that causes high damages to wheat production as annual. In order to achieve reduced dual purpose herbicide doses Metsulfuron methyl+sulfosulfuron in the early stages of wheat growth and comparison with other doses in tillering stage and after that, this design was conducted randomized complete block design with 18 treatments and 3 replications. Treatments consisted of spraying time in four steps, based on the growth stages of wheat 1- appearance of tree leafs, 2- appearance of five leafs 3- tillering 4- stem elongation and The total herbicide dose includes the recommended dose (45 gr/ha), 75 percentage of the recommended dose (33 gr/ha), 50 percentage of the recommended dose (23 gr/ha), and 25 percentage of the recommended dose (12 gr/ha) and herbicide of sulfosulfuron as standard herbicide in tillering stage and control without spraying were conducted. Different assessments including bromus dry weight at 30 and 60 days after treatment in wheat harvesting time and also grain yield were evaluated. In addition, damage to Bromus and wheat was done using the visual scoring method Based on the obtained results, Treatment six means 75 percentage of the total recommended dose (33 gr/ha) in the five stage, the wheat leaf, which has not seen any damage in the wheat, was recognized as the best treatment.
