mohammad reza rahimi; alireza yousefi; khalil jamshidi; MAJID POURYOUSEF
Abstract
This experiment was carried out at the Research Farm of Faculty of Agriculture, University of Zanjan in Spring of 2012 to introduce an integrated weed management method in fennel. Treatments were type of herbicide (trifluralin and pendimethalin), application dose (recommend dose in other crop (R), 75 ...
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This experiment was carried out at the Research Farm of Faculty of Agriculture, University of Zanjan in Spring of 2012 to introduce an integrated weed management method in fennel. Treatments were type of herbicide (trifluralin and pendimethalin), application dose (recommend dose in other crop (R), 75 percent R, 50 percent R, and 0 percent R) and supplemental control (none, one hand-weeding at 50 day after planting (DAP) and, wheat straw mulch 2 kg m-2). A plot with whole season hand weeding was also included as check. The results showed that weed biomass loss, fennel yield and yield components significantly affected by weed control treatments. Pendimethalin provided better weeds control than trifluralin. Experimental results also showed that the use of herbicides resulted in reduced weed biomass but did not provide season long weed control without an additional supplemental control. Overall, the recommended dose of pendimethalin (1320 g ai ha-1) followed by one hand-weeding at 50 DAP produced consistently high yield (3561 kg ha-1) and weed biomass loss (92 percent).
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.
Ebrahim Rais Mohammadi; Hasan Mohammad Alizade; Mohammad Ali Baghestani Meibodi; Mostafa Arab
Volume 13, Issue 1 , August 2011, , Pages 43-54
Abstract
A field experiment was conducted at College of Aburaihan, University of Tehran, Iran in 2007 to evaluate the herbicides efficacy in a marigold nursery to control weeds including annual flowers. Experimental design was a RCBD with total 12 treatments replicated four times. Treatments were trifluralin ...
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A field experiment was conducted at College of Aburaihan, University of Tehran, Iran in 2007 to evaluate the herbicides efficacy in a marigold nursery to control weeds including annual flowers. Experimental design was a RCBD with total 12 treatments replicated four times. Treatments were trifluralin preplant incorporated at two and three Li/ha, trifluralin preplant non incorporated at two and three Li/ha, oxyfluorfen preplant at two and three Li/ha, oxyfluorfen postemergence at two and three Li/ha and cholorothol-dimethyl preplant at 10 Kg/ha, two-times hand weeding, weedy and weed free treatments were also included as control. Application of oxyfluorfen preplant and trifluralin preplant at both rates of two and three Li/ha controlled weeds by 70 percent. This treatment had no phytotoxic effects on marigolds and did not reduce their yields either. Among applied herbicides, application of non-soil incorporated trifluralin treatment compared with treatment of the same soil incorporated with herbicides, due to easier application, indicated its preference and also had no phytotoxic effects on marigold.