Effect of planter and tractor wheels on row and inter-row weed populations
Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Tardif-Paradis, Corinne [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2015transfer abstract |
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| Schlagwörter: |
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| Umfang: |
6 |
|---|
| Übergeordnetes Werk: |
Enthalten in: Improving the clinical relevance of a mouse pregnancy model of antiretroviral toxicity; a pharmacokinetic dosing-optimization study of current HIV antiretroviral regimens - Kala, Smriti ELSEVIER, 2018, Amsterdam [u.a.] |
|---|---|
| Übergeordnetes Werk: |
volume:71 ; year:2015 ; pages:66-71 ; extent:6 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.cropro.2015.01.026 |
|---|
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ELV028867505 |
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| 245 | 1 | 0 | |a Effect of planter and tractor wheels on row and inter-row weed populations |
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| 520 | |a Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. | ||
| 520 | |a Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. | ||
| 650 | 7 | |a Row crop |2 Elsevier | |
| 650 | 7 | |a Weed detection |2 Elsevier | |
| 650 | 7 | |a Weed distribution |2 Elsevier | |
| 650 | 7 | |a Wheel-tracked inter-row |2 Elsevier | |
| 650 | 7 | |a Unseeded row |2 Elsevier | |
| 700 | 1 | |a Simard, Marie-Josée |4 oth | |
| 700 | 1 | |a Leroux, Gilles D. |4 oth | |
| 700 | 1 | |a Panneton, Bernard |4 oth | |
| 700 | 1 | |a Nurse, Robert E. |4 oth | |
| 700 | 1 | |a Vanasse, Anne |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Kala, Smriti ELSEVIER |t Improving the clinical relevance of a mouse pregnancy model of antiretroviral toxicity; a pharmacokinetic dosing-optimization study of current HIV antiretroviral regimens |d 2018 |g Amsterdam [u.a.] |w (DE-627)ELV000917710 |
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10.1016/j.cropro.2015.01.026 doi GBVA2015008000030.pica (DE-627)ELV028867505 (ELSEVIER)S0261-2194(15)00041-1 DE-627 ger DE-627 rakwb eng 630 580 630 DE-600 580 DE-600 610 VZ PHARM DE-84 fid 15,3 ssgn 44.43 bkl Tardif-Paradis, Corinne verfasserin aut Effect of planter and tractor wheels on row and inter-row weed populations 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Row crop Elsevier Weed detection Elsevier Weed distribution Elsevier Wheel-tracked inter-row Elsevier Unseeded row Elsevier Simard, Marie-Josée oth Leroux, Gilles D. oth Panneton, Bernard oth Nurse, Robert E. oth Vanasse, Anne oth Enthalten in Elsevier Kala, Smriti ELSEVIER Improving the clinical relevance of a mouse pregnancy model of antiretroviral toxicity; a pharmacokinetic dosing-optimization study of current HIV antiretroviral regimens 2018 Amsterdam [u.a.] (DE-627)ELV000917710 volume:71 year:2015 pages:66-71 extent:6 https://doi.org/10.1016/j.cropro.2015.01.026 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.43 Medizinische Mikrobiologie VZ AR 71 2015 66-71 6 045F 630 |
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10.1016/j.cropro.2015.01.026 doi GBVA2015008000030.pica (DE-627)ELV028867505 (ELSEVIER)S0261-2194(15)00041-1 DE-627 ger DE-627 rakwb eng 630 580 630 DE-600 580 DE-600 610 VZ PHARM DE-84 fid 15,3 ssgn 44.43 bkl Tardif-Paradis, Corinne verfasserin aut Effect of planter and tractor wheels on row and inter-row weed populations 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Row crop Elsevier Weed detection Elsevier Weed distribution Elsevier Wheel-tracked inter-row Elsevier Unseeded row Elsevier Simard, Marie-Josée oth Leroux, Gilles D. oth Panneton, Bernard oth Nurse, Robert E. oth Vanasse, Anne oth Enthalten in Elsevier Kala, Smriti ELSEVIER Improving the clinical relevance of a mouse pregnancy model of antiretroviral toxicity; a pharmacokinetic dosing-optimization study of current HIV antiretroviral regimens 2018 Amsterdam [u.a.] (DE-627)ELV000917710 volume:71 year:2015 pages:66-71 extent:6 https://doi.org/10.1016/j.cropro.2015.01.026 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.43 Medizinische Mikrobiologie VZ AR 71 2015 66-71 6 045F 630 |
| allfields_unstemmed |
10.1016/j.cropro.2015.01.026 doi GBVA2015008000030.pica (DE-627)ELV028867505 (ELSEVIER)S0261-2194(15)00041-1 DE-627 ger DE-627 rakwb eng 630 580 630 DE-600 580 DE-600 610 VZ PHARM DE-84 fid 15,3 ssgn 44.43 bkl Tardif-Paradis, Corinne verfasserin aut Effect of planter and tractor wheels on row and inter-row weed populations 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Row crop Elsevier Weed detection Elsevier Weed distribution Elsevier Wheel-tracked inter-row Elsevier Unseeded row Elsevier Simard, Marie-Josée oth Leroux, Gilles D. oth Panneton, Bernard oth Nurse, Robert E. oth Vanasse, Anne oth Enthalten in Elsevier Kala, Smriti ELSEVIER Improving the clinical relevance of a mouse pregnancy model of antiretroviral toxicity; a pharmacokinetic dosing-optimization study of current HIV antiretroviral regimens 2018 Amsterdam [u.a.] (DE-627)ELV000917710 volume:71 year:2015 pages:66-71 extent:6 https://doi.org/10.1016/j.cropro.2015.01.026 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.43 Medizinische Mikrobiologie VZ AR 71 2015 66-71 6 045F 630 |
| allfieldsGer |
10.1016/j.cropro.2015.01.026 doi GBVA2015008000030.pica (DE-627)ELV028867505 (ELSEVIER)S0261-2194(15)00041-1 DE-627 ger DE-627 rakwb eng 630 580 630 DE-600 580 DE-600 610 VZ PHARM DE-84 fid 15,3 ssgn 44.43 bkl Tardif-Paradis, Corinne verfasserin aut Effect of planter and tractor wheels on row and inter-row weed populations 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Row crop Elsevier Weed detection Elsevier Weed distribution Elsevier Wheel-tracked inter-row Elsevier Unseeded row Elsevier Simard, Marie-Josée oth Leroux, Gilles D. oth Panneton, Bernard oth Nurse, Robert E. oth Vanasse, Anne oth Enthalten in Elsevier Kala, Smriti ELSEVIER Improving the clinical relevance of a mouse pregnancy model of antiretroviral toxicity; a pharmacokinetic dosing-optimization study of current HIV antiretroviral regimens 2018 Amsterdam [u.a.] (DE-627)ELV000917710 volume:71 year:2015 pages:66-71 extent:6 https://doi.org/10.1016/j.cropro.2015.01.026 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.43 Medizinische Mikrobiologie VZ AR 71 2015 66-71 6 045F 630 |
| allfieldsSound |
10.1016/j.cropro.2015.01.026 doi GBVA2015008000030.pica (DE-627)ELV028867505 (ELSEVIER)S0261-2194(15)00041-1 DE-627 ger DE-627 rakwb eng 630 580 630 DE-600 580 DE-600 610 VZ PHARM DE-84 fid 15,3 ssgn 44.43 bkl Tardif-Paradis, Corinne verfasserin aut Effect of planter and tractor wheels on row and inter-row weed populations 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. Row crop Elsevier Weed detection Elsevier Weed distribution Elsevier Wheel-tracked inter-row Elsevier Unseeded row Elsevier Simard, Marie-Josée oth Leroux, Gilles D. oth Panneton, Bernard oth Nurse, Robert E. oth Vanasse, Anne oth Enthalten in Elsevier Kala, Smriti ELSEVIER Improving the clinical relevance of a mouse pregnancy model of antiretroviral toxicity; a pharmacokinetic dosing-optimization study of current HIV antiretroviral regimens 2018 Amsterdam [u.a.] (DE-627)ELV000917710 volume:71 year:2015 pages:66-71 extent:6 https://doi.org/10.1016/j.cropro.2015.01.026 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-PHARM SSG-OLC-PHA SSG-OPC-PHA 44.43 Medizinische Mikrobiologie VZ AR 71 2015 66-71 6 045F 630 |
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Improving the clinical relevance of a mouse pregnancy model of antiretroviral toxicity; a pharmacokinetic dosing-optimization study of current HIV antiretroviral regimens |
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effect of planter and tractor wheels on row and inter-row weed populations |
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Effect of planter and tractor wheels on row and inter-row weed populations |
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Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. |
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Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. |
| abstract_unstemmed |
Real time weed detection could reduce herbicide inputs in fields but its application is constrained by weed/crop discrimination. This hurdle could be bypassed in crops like corn and soybean if weeds were detected on the inter-row only. However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned. |
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Effect of planter and tractor wheels on row and inter-row weed populations |
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Simard, Marie-Josée Leroux, Gilles D. Panneton, Bernard Nurse, Robert E. Vanasse, Anne |
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However, using inter-row data to control weeds could be risky if weeds are more abundant on rows. A field study was carried out in the province of Québec (Canada) to evaluate the effect of the planter unit and tractor wheels on relative weed cover, density and biomass between rows and inter-rows in corn and soybean when a post-emergence application of herbicide is scheduled. The experimental design included two sites, two fields per site, two years, and two crops. Treatments included: 1) seeded row (control) 2) unseeded row (seeder pass without crop seeds) and 3) tractor wheel (wheel tracked inter-row). Weed cover was evaluated using digital images and a custom made program. The absence of a crop on rows (unseeded vs. seeded rows) did not modify weed density and biomass before herbicide application in both corn and soybean. Weed density was always higher on rows than on inter-rows unless inter-rows had been tracked by tractor wheels indicating that soil disturbance by the planter and tractor wheels increased weed seed germination and subsequent seedling emergence. Weed cover on undisturbed inter-rows was generally lower or equivalent to weed cover on rows. Weed cover on inter-rows compacted by tractor wheels was always equivalent or higher than weed cover on rows. Using inter-rows to detect weeds could underestimate weed pressure in corn and soybean in Québec, unless the inter-rows trampled by tractor wheels were scanned.</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Row crop</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Weed detection</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Weed distribution</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Wheel-tracked inter-row</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Unseeded row</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Simard, Marie-Josée</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Leroux, Gilles D.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Panneton, Bernard</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Nurse, Robert E.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Vanasse, Anne</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="n">Elsevier</subfield><subfield code="a">Kala, Smriti ELSEVIER</subfield><subfield code="t">Improving the clinical relevance of a mouse pregnancy model of antiretroviral toxicity; a pharmacokinetic dosing-optimization study of current HIV antiretroviral regimens</subfield><subfield code="d">2018</subfield><subfield code="g">Amsterdam [u.a.]</subfield><subfield code="w">(DE-627)ELV000917710</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:71</subfield><subfield code="g">year:2015</subfield><subfield code="g">pages:66-71</subfield><subfield code="g">extent:6</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.cropro.2015.01.026</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">FID-PHARM</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-PHA</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">44.43</subfield><subfield code="j">Medizinische Mikrobiologie</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">71</subfield><subfield code="j">2015</subfield><subfield code="h">66-71</subfield><subfield code="g">6</subfield></datafield><datafield tag="953" ind1=" " ind2=" "><subfield code="2">045F</subfield><subfield code="a">630</subfield></datafield></record></collection>
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