Faribi Meighani; mohammadreza karaminejad
Abstract
This study was conducted in the research field of Iranian Research Institute of Plant Protection in Karaj as strip split plots with three replications. The first factor: tillage and no-tillage, and the second factor: herbicide: Glyphosate 6 L/ha, 2,4-D + MCPA 2L/ha, Glyphosate + 2,4-D + MCPA (6 + 2 L/ha), ...
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This study was conducted in the research field of Iranian Research Institute of Plant Protection in Karaj as strip split plots with three replications. The first factor: tillage and no-tillage, and the second factor: herbicide: Glyphosate 6 L/ha, 2,4-D + MCPA 2L/ha, Glyphosate + 2,4-D + MCPA (6 + 2 L/ha), Glyphosate 3 L/ha, 2,4-D + MCPA 1 L/ha, Glyphosate + 2,4-D + MCPA (3 + 1 L/ha), and control without herbicide. The number of field bindweed shoot was determined 15, 30 and 45 days after spraying and field bindweed biomass was determined 45 days after spraying. In the second year, sugarbeet was planted and the effect of herbicides was determined on sugarbeet yield. The best treatment for field bindweed density decrease was Glyphosate + 2,4-D + MCPA (6 + 2 L/ha). The same treatment and its split dose as suitable treatments caused the most decrease in field bindweed biomass. There was no significant difference between till and no-till treatments in view of their effect on field bindweed density and biomass. Under effect of no-till treatment, field bindweed biomass showed more decrease and under effect of no-till treatment, sugarbeet yield showed more increase. Overall, The best treatment for field bindweed density and biomass was Glyphosate + 2,4-D + MCPA (6 + 2 L/ha) and after that its split dose.
Farhad Biuckzadeh; Marjan Diyanat
Abstract
In order to investigate chemical control of weeds in nursery of orange coneflower and moss rose two experiments were conducted in Randomized Complete Block Design (RCBD) with four replications in 2011. Treatments were Per-plant trifluralin (EC48 percent) with and without incorporation with soil at 0.2 ...
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In order to investigate chemical control of weeds in nursery of orange coneflower and moss rose two experiments were conducted in Randomized Complete Block Design (RCBD) with four replications in 2011. Treatments were Per-plant trifluralin (EC48 percent) with and without incorporation with soil at 0.2 and 0.3 ml/m2, Per-emergence and Post-emergence oxyfluorfen (EC24 percent) at 0.2 and 0.3 ml/m2, Pre-plant chlorthal-dimethyl (WP48 percent) at one g/m2, two-times hand weeding, weedy and without weed control. Results showed that the use of all herbicide avoided germination of moss rose, thus chemical control of weeds was not recommended. In orange coneflower, kochia, pigweed, lamb'squarters, purslane (broad-leaf weeds) and monocots were controlled by terifluralin, but poor control of common mallow, velvetleafand venice mallow was achieved. Chlorthal-dimethyl had less efficiency in control of broad-leaf and grass weeds comparing to other herbicides. The best treatment for the control of weeds in the nursery of orange coneflower was trifluralin + hand weeding.