Weed flora in the early growth period of spring crops under conventional, reduced, and zero tillage systems on a clay soil in northern Alberta, Canada

Gill, K. S.; Arshad, Muhammad

doi:10.1016/0167-1987(94)00429-i

Cited by 55 publications

(31 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…).The possible reason for the increase in weed fresh weight is that weeds compete for light, water and nutrients with plants and thus shallow tillage significantly increased water and thus nutrients availability. Our resultsare similar with the finding of Zorita, (2000) and Gill and Arshad, (1995) who counted lower weed fresh weight in CT and DT compared to RT. Soil covered up the weed seed in CT & DT while not do same in RT so that is why maximum weed fresh weight was counted because of the reduce leaching and high water holding capacity and less disturbance of weeds seed.…”

Section: Discussionsupporting

confidence: 93%

“…soil covered up the weed seed in CT & DT while not do same in RT so that is why maximum weed density was counted because of the reduce leaching and high water holding capacity and less disturbance of weeds seed (Cardinaet al, 1991) and/or eradication of weeds. (Gill and Arshad, 1995) counted minimum weeds in mould board and chisel plough compared to rotavator. ).The possible reason for the increase in weed fresh weight is that weeds compete for light, water and nutrients with plants and thus shallow tillage significantly increased water and thus nutrients availability.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Wheat phenology and density and fresh and dry weight of weeds as affected by potassium sources levels and tillage practices

Khan¹,

Basir²,

Adnan³

et al. 2017

PJWSR

View full text Add to dashboard Cite

An experiment was conducted to evaluate the effect of potassium sources, levels and tillage practice on wheat phenology, weeds density, fresh and dry weight at New Developmental Farm, The University of Agriculture Peshawar during Rabi 2012. Randomized Complete Block (RCB) design with split plot arrangement having three replications was used. Tillage practices (chisel plough, mould board plough and rotavator) were allotted to main plots while K sources (Sulphate of Potash-SOP and Muriate of Potash-MOP) with levels (30, 60, 90, and 120 kg ha ) as compared to mould board and chisel plough. SOP has significantly delayed anthesis(138 days), grain fill duration (29 days) and physiological maturity (167 days) were taken by subplots which received K in the form of sulphate of potash (SOP). While in case of potassium levels maximum days to anthesis (140), grain fill duration (29) and physiological maturity (168) were counted for K applied at the rate of 120 kg ha -1. Control plot had resulted minimum values for all aforesaid parameters. It is concluded from the experiment that rotavatorhad increased weeds density, fresh and dry weight. However, on the other hand chisel plough had significantly reduced weed density, fresh and dry weight. It is therefore, chisel plough and SOP at the rate of 60 kg ha -1 is recommended to control weeds and delay wheat phenology.

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Wheat phenology and density and fresh and dry weight of weeds as affected by potassium sources levels and tillage practices

Khan¹,

Basir²,

Adnan³

et al. 2017

PJWSR

View full text Add to dashboard Cite

show abstract

“…The rate of reinfestation found after both application timings can be considered as quite low and seems to be a consequence of the absence of soil disturbance. These results are in accordance with the findings of other authors (Gill and Arshad, 1995;Hakansson, 1995;Jensen, 1995). …”

Section: Weed Controlsupporting

confidence: 94%

“…According to Wrucke and Arnold (1985), annual grass weed populations usually increase in notill systems, while annual broad-leaved weeds decrease (Buhler and Daniel, 1988). Gill and Arshad (1995), Hakansson (1995) and Jensen (1995) have reported a reduced late emergence of annual weeds with decreasing soil tillage intensity. In no-till systems, where the soil remains undisturbed and the soil surface is covered by plant residues, weed densities are reduced when compared with other tillage systems (Zanin et al, 1997;Streit et al, 2002).…”

Section: Introductionmentioning

confidence: 98%

Effect of reduced doses of mesosulfuron + iodosulfuron to control weeds in no-till wheat under Mediterranean conditions

Barros¹,

Basch²,

Freixial³

et al. 2009

Span. j. agric. res.

View full text Add to dashboard Cite

Field experiments were carried out over three years (2004-05, to 2006-07) to study the efficacy of a post-emergence dual-purpose herbicide (mesosulfuron -methyl (3%) + iodosulfuron -methyl -sodium (0.6%) + mefenpyr -diethyl (9%) to control Lolium rigidum Gaud. and broad-leaved weeds in no-till wheat (Triticum aestivum L.). A ready herbicide mixture was used at three doses (6+1.2, 9+1.8 and 12+2.4 g a.i. ha -1 ) on two dates (beginning of tillering for L. rigidum and 2-3 pair of leaves for broad-leaved weeds, and complete tillering for L. rigidum and 5-6 pair of leaves for broad-leaved weeds) with three different application volumes (100, 200 and 300 L ha -1 ). The results of the present study reveal that using lower than the recommended dose (12+2.4 g ha -1 ), the herbicide mixture controls L. rigidum better than it controls some broad-leaved weeds. Effective weed control, which was achieved mainly through the application at the first weed development stage, provided higher grain yields. The lower control efficacy of more developed L. rigidum and broad-leaved weeds and a longer period of competition between crop and weeds are responsible for the significantly lower crop yields for the delayed application. Within each application timing significant differences were obtained among the dose/volume combinations, with the exception of the first application regarding L. rigidum control, indicating that a reduction in herbicide dose is possible, but only for certain dose/volume combinations. Nonetheless, weed control was maintained across an array of dose/volume combinations, especially with L. rigidum, thus, our results demonstrate that reduced doses can effectively control weeds if applied early.Additional key words: application timing, application volume, broad-leaved weeds, herbicide dose, Lolium rigidum Gaud, weed control. ResumenEfecto de la reducción de dosis y volúmenes de aplicación en un herbicida de post-emergencia para controlar malezas en trigo de siembra directa en condiciones mediterráneas Se llevaron a cabo ensayos de campo durante tres años (2004/2005, 2005/2006 y 2006/2007) en una finca en la región de Évora (Alentejo), en el sur de Portugal, para estudiar la eficacia de un herbicida [mesosulfuron metil (3%)+io-dosulfuron metil sodio (0,6%)+mefenpir dietil (9%)] en aplicaciones de post-emergencia en el control de Lolium rigidum Gaud. (Ballico) y de otras malezas de hoja ancha, en un cultivo de trigo en siembra directa. Se aplicó el herbicida a tres niveles (6+1,2, 9+1,8 y 12+2,4 g a.i. ha -1 ), en dos fechas (comienzo de ahijamiento y ahijamiento completo para L. rigidum y 2-3 pares de hojas frente a 5-6 pares para malas hierbas de hoja ancha), y con tres volúmenes de aplicación (100, 200 y 300 L ha -1 ). Con dosis de herbicida más bajas de lo recomendado (12+2,4 g ha -1 ), se controla con más eficacia L. rigidum que las malezas de hoja ancha. Para todas las combinaciones dosis/volumen, las aplicaciones tempranas en los primeros estadios de desarrollo proporcionaron las más elevadas producci...

show abstract

“…Other perennial species that reproduce vegetatively from buds on underground roots or rhizomes can survive tillage operations and are problems for conventional, reduced, and no-till systems. Gill and Arshad (1995) reported that RT systems often favor annual grasses and discourage annual dicotyledonous species. Gruber et al (2012) found that perennial weeds, which often are typical species in RT systems, were present at lower density in non-inversion tillage systems than in inversion tillage systems.…”

Section: Resultsmentioning

confidence: 99%

The Effect of Conventional and Reduced Tillage Systems on Grain Yield and Weed Species Density in Common Vetch (Vicia Sativa L.)

OZASLAN¹,

GURSOY²

2015

AgricultForest

View full text Add to dashboard Cite

SUMMARYThe presence of weed species and their densities in agricultural fields are influenced significantly by tillage and planting methods. This study determined the effects of tillage systems on grain yield and weed species density in common vetch production following the harvest of a prior crop of wheat (Triticum aestivum L.). We compared conventional [moldboard plough + cultivator (two times) + drill] and reduced [cultivator (two times) + drill] tillage treatments using a random block design with four replications. We identified 23 and 24 different weed species belonging to 11 and 10 different weed families in the reduced tillage and conventional tillage plots, respectively. The weed density ranged from 1 to 56 plants m -2 . The weed species that was present at the highest density was Sinapis arvensis. The effects of the tillage treatments on weed density differed among the weed species. Sorghum halepense had the highest density under the reduced tillage method, while the S. arvensis density increased under the conventional tillage treatment. The seed yield of common vetch was not affected significantly by the tillage methods.

show abstract

Weed flora in the early growth period of spring crops under conventional, reduced, and zero tillage systems on a clay soil in northern Alberta, Canada

Cited by 55 publications

References 15 publications

Wheat phenology and density and fresh and dry weight of weeds as affected by potassium sources levels and tillage practices

Wheat phenology and density and fresh and dry weight of weeds as affected by potassium sources levels and tillage practices

Effect of reduced doses of mesosulfuron + iodosulfuron to control weeds in no-till wheat under Mediterranean conditions

The Effect of Conventional and Reduced Tillage Systems on Grain Yield and Weed Species Density in Common Vetch (Vicia Sativa L.)

Contact Info

Product

Resources

About