Effect of reduced doses of a post-emergence herbicide to control grass and broad-leaved weeds in no-till wheat under Mediterranean conditions

Barros, José Calado; Basch, Gottlieb; Carvalho, Mário de

doi:10.1016/j.cropro.2006.12.017

Cited by 39 publications

(29 citation statements)

References 25 publications

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“…Significant reduction in weed biomass was achieved when at least 50% of recommended or higher rates of pretilachlor were applied (Table 3). Barros et al, 2007 andKhaliq et al (2011) reported similar results and concluded that significant weed suppression can be achieved with reduced herbicide rates. Uniform planting pattern of rice plants suppressed weeds 39% and improved herbicide efficacy 23% better than wide-row planting pattern as averaged across pretilchlor rates and cultivars (Table 3).…”

Section: Resultssupporting

confidence: 66%

Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide

Aminpanah¹

2015

Biosci. J.

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ABSTRACT:To evaluate the effects of herbicide rate, cultivar, and spatial pattern on rice grain yield and weed suppression, a field experiment was conducted on a lowland rice field at the Rice Research Station of Tonekabon, north of Iran, in 2011. The experimental design was a split plot-factorial where the whole plot portion was a randomized complete block with three replicates. Main plots were pretilachlor rates (0, 0.5, 1, 1.5, 2 L ha -1 of pretilachlor). The subplots were factorial combinations of two crop spatial patterns (uniform and wide-row planting patterns, 20× 20 and 30 × 13 cm, respectively) and two traditional rice cultivars ('Hashemi' and 'Deylamani'). Regardless of cultivar and spatial pattern, rice grain and biological yields, panicle number per m 2 , leaf area index, and herbicide efficacy increased, while weed biomass decreased with increasing pretilachlor application rate. Rice grain and biological yields, panicle number per m 2 , leaf area index, and herbicide efficacy were significantly greater in uniform planting pattern than in wide-row planting pattern when averaged over cultivars and pretilachlor rates. Moreover, uniform planting pattern of rice plants suppressed weeds 39% better than wide-row planting pattern as averaged across pretilchlor rates and cultivars. 'Deylamani' produced grater grain and biological yields, panicle number per m 2 , leaf area index than 'Hashemi' as averaged across pretilachlor rates and spatial patterns. This experiment illustrated that uniform spatial pattern increased weed suppression, herbicide efficacy, and grain yield.

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Section: Resultssupporting

confidence: 66%

Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide

Aminpanah¹

2015

Biosci. J.

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“…Thus, no-till crop establishment also reduces post-emergence infestation as buried seeds remain below the surface soil layer and do not germinate. Furthermore, the reduced weed pressure, together with a much better soil bearing capacity, which allows early herbicide application timings even in wet winters, enables the use of reduced herbicide rates to guarantee effective post-emergence weed control (Barros et al, 2007;Barros et al, 2008). However, a delay of the autumn rains may cause problems through retarded weed germination in already established winter crops.…”

Section: Herbicide Usagementioning

confidence: 99%

No-till in northern, western and south-western Europe: A review of problems and opportunities for crop production and the environment

Soane¹,

Ball²,

Arvidsson³

et al. 2012

Soil and Tillage Research

626

501

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“…Moreover, modern weed science also emphasizes following an ecological approach based on keeping weed populations below threshold levels rather than eradicating them (Barroso et al, 2009). Numerous herbicide molecules at lowerthan-recommended rates are effective enough to provide satisfactory weed control without sacrificing yields and increasing weed infestation in the following years (Zhang et al, 2000;Boström and Fogelfors, 2002;Walker et al, 2002;Auskalnis and Kadzys, 2006;Barros et al, 2007). Reduced herbicide doses seem to offer a promising tool for decreasing herbicide usage across the globe.…”

mentioning

confidence: 99%

Reduced Doses of a Sulfonylurea Herbicide for Weed Management in Wheat Fields of Punjab, Pakistan

Khaliq

Matloob

Tanveer

et al. 2011

Chilean J. Agric. Res.

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Reduction in herbicide usage without compromising yields can lead to less environmental harm and lower production costs. Field trials were conducted to appraise the efficacy of reduced doses (25, 50, and 75% of the label dose) of a post emergence sulfonylurea herbicide [Atlantis 3.6WG (iodo+mesosulfuron)] to control weeds in wheat (Triticum aestivum L.) fields of Punjab, Pakistan. Below-labeled-doses were quite effective in suppressing total weed density (72-95%) and biomass (83-94%), and wheat grain yield was increased by 22 to 48% over the weedy control, while label dose of iodo+mesosulfuron improved yield by 53%. Iodo+mesosulfuron at 25 and 50% of the label dose inhibited grass weeds by 43 to 64%, albeit their biomass was suppressed by > 80% over control. Wheat yields for reduced herbicide doses (50 and 75%) were not different with label dose. Economic analysis revealed that the maximum marginal rate of return was recorded for 50% of the label herbicide dose and was followed by that observed for 25% of the label dose. Reduced doses of herbicide can be an effective tool in minimizing herbicide inputs and lowering production costs in wheat production without compromising yields.

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Effect of reduced doses of a post-emergence herbicide to control grass and broad-leaved weeds in no-till wheat under Mediterranean conditions

Cited by 39 publications

References 25 publications

Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide

Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide

No-till in northern, western and south-western Europe: A review of problems and opportunities for crop production and the environment

Reduced Doses of a Sulfonylurea Herbicide for Weed Management in Wheat Fields of Punjab, Pakistan

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