Effects of crop management practices on <i>Echinochloa crus‐galli</i> and <i>Chenopodium album</i> seed production in a maize/soyabean rotation

Perron, F.; Légère, Anne

doi:10.1046/j.1365-3180.2000.00210.x

Cited by 18 publications

(13 citation statements)

References 25 publications

(31 reference statements)

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“…(), which showed greater weed densities in CA compared to conventional tillage (CONV). Conversely, several studies found that tillage did not have any effect on weed density (Perron & Légère, ; Bullied et al ., ; Shrestha et al ., ; Mandumbu et al ., ).…”

Section: Introductionmentioning

confidence: 96%

Influence of selected soil properties, soil management practices and socio‐economic variables on relative weed density in a hand hoe‐based conservation agriculture system

Mavunganidze

Madakadze

Nyamangara

et al. 2016

Soil Use and Management

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Weeds are problematic to the smallholder farmers, who practise conservation agriculture (CA) in sub‐Saharan Africa, owing to an apparent lack of appropriate weed management strategies. We investigated weed dynamics under the planting basin (PB) system (hand hoe‐based CA) to assist the design of appropriate weed management options. On‐farm experiments were conducted under semi‐arid conditions in Zimbabwe to determine the effects of 11 selected soil properties, four socio‐economic variables and two soil management practices on relative weed density. Weed counts were made according to species at 3, 6 and 9 weeks after crop emergence. Multivariate ordination techniques and a quadratic model, developed with partial least squares, showed that Richardia scabra increased with sand content in the soil. Density of R. scabra and Melinis repens also increased with topsoil potassium content. When ranked according to importance, relative weed density was most dependent on sand content followed by topsoil potassium, nitrate, clay and silt content, and training related to crop production. Soil physico‐chemical properties, therefore, had greater influence on relative weed density than socio‐economic variables and soil management practices. We concluded that variability in weed density under the PB system was not necessarily determined by tillage alone, but was also a consequence of soil properties and to a lesser extent of socio‐economic variables and soil management practices. Understanding soil properties and management practices, which determine weed variability, helps in the design of general weed management recommendations that can be used by smallholders, most of whom do not have access to field‐specific advice.

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Section: Introductionmentioning

confidence: 96%

Influence of selected soil properties, soil management practices and socio‐economic variables on relative weed density in a hand hoe‐based conservation agriculture system

Mavunganidze

Madakadze

Nyamangara

et al. 2016

Soil Use and Management

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“…In the long term, effective weed control under minimum tillage could result in the depletion of the seedbank near the soil surface. Lower weed densities could be expected in the years following the adoption of conservation tillage practices (Froud-Williams et al 1984;Ball 1992), provided that residual weed populations would be prevented from producing seeds and replenishing the seedbank (Perron and Légère 2000).…”

Section: Discussionmentioning

confidence: 99%

Crop and weed response to nutrient source, tillage and weed control method in a corn-soybean rotation

Perron¹,

Légère²,

Tremblay³

et al. 2001

Can. J. Plant Sci.

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2001. Crop and weed response to nutrient source, tillage and weed control method in a corn-soybean rotation. Can. J. Plant Sci. 81: 561-571. The integration of various sustainable management techniques in cropping systems can potentially reduce agro-environmental problems, but may warrant a new approach to weed management, due to changes in weed communities. A 3-yr experiment was conducted to determine the effects and interactions of tillage (moldboard plow or chisel plow), weed control method (chemical or mechanical), and nutrient source (mineral fertilizers or liquid hog manure supplemented with mineral fertilizers) on crops and weeds in a corn (Zea mays L.)-soybean (Glycine max (L.) Merr.) rotation on two soils (a Sainte-Rosalie clay and a Duravin clay loam, Orthic Gleysols), at Saint-Hyacinthe, Québec. In most cases, weed density and biomass were more important with mechanical than with chemical control. Nutrient source did not affect weed density, but weed biomass was higher in the manure than the mineral treatment in 1997. Weed populations on both soils were greater with chisel plow tillage combined with mechanical weed control. The presence of crop residues in chisel plow systems may have hindered the efficacy of mechanical weed control operations, particularly when corn was the previous crop. Soybean populations, mid-season biomass and yields were reduced in chisel plow compared with moldboard plow tillage. Corn populations and mid-season biomass were not affected by any of the factors, whereas corn yields showed variable responses over the years. Efficacy of mechanical weed control would need to be enhanced or complemented with other weed control methods, in order to reduce the risks of weed infestations and lower crop yields, particularly in conservation tillage systems. Liquid hog manure would have little effect on weed populations, but would need to be adequately balanced in order to ensure proper crop nutrition and optimum yields.. et Hamel C. 2001. Effet de la fertilisation, du travail du sol et du désherbage sur les cultures et les mauvaises herbes dans une rotation maïs-soya. Can. J. Plant Sci. 81: 561-571. L'intégration de différentes pratiques durables dans des systèmes de production peut réduire les problèmes agro-environnementaux, mais peut exiger certaines modifications aux programmes de lutte aux mauvaises herbes, étant donné l'effet que ces pratiques peuvent avoir sur les communautés de mauvaises herbes. Une expérience d'une durée de trois ans a été réalisée dans le but de déterminer les effets et les interactions du travail du sol (chisel ou charrue à versoir), du désherbage (chimique ou mécanique) et du type de fertilisant (fertilisants minéraux ou lisier de porc complémenté avec des fertilisants minéraux) sur la culture et les mauvaises herbes dans une rotation maïs (Zea mays L.)-soya (Glycine max (L.) Merr.) sur deux sols (une argile Sainte-Rosalie et un loam argileux Duravin, Gleysols humiques), à Saint-Hyacinthe, Québec. Dans la plupart des cas, la densité et la biomasse des mauvaise...

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“…for corn and soybean under mechanical versus chemical weed control in Quebec; however, the efficacy of mechanical weed control could have been improved if the timing was earlier (Perron and Légère 2000). Wide row spacing can be used in crops that are traditionally solid-seeded to facilitate inter-row cultivation (e.g., pea) (Johnson and Frick 2002).…”

Section: Substitution Of Direct Non-chemical Weed Control For Herbicimentioning

confidence: 99%

“…Increased seeding rate and seeding depth can compensate for crop damage incurred during mechanical weed control operations (Kirkland 1995;Johnson 2002a). Timing of weed control is critical to achieve optimum results (Perron and Légère 2000;Swanton et al 2002;Porter et al 2003), and may be assisted by modelling weed emergence (Forcella et al 1993;Bullied et al 2003;Grundy 2003). Mechanical weed control can also be facilitated by staggered planting of crops on a single farm so that the need to cultivate large areas at one time is avoided (Jordan 1996).…”

Section: Substitution Of Direct Non-chemical Weed Control For Herbicimentioning

confidence: 99%

Strategies and tactics for herbicide use reduction in field crops in Canada: A review

Nazarko¹,

Acker²,

Entz³

2005

Can. J. Plant Sci.

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There are many economic and health reasons for reducing pesticide use in Canada. Herbicide use on field crops is by far the most common pesticide use in Canada. This paper is a review of four topics related to herbicide use reduction on field crops in Canada: (1) broad strategies and (2) specific tactics for herbicide use reduction; (3) factors affecting adoption; and 4) research approaches for improving the implementation of herbicide use reduction. Numerous tactics exist to use herbicides more efficiently and herbicides can sometimes be replaced by non-chemical weed control methods. Many of these tactics and methods have been investigated and demonstrated for use on field crops in Canada. However, herbicide use reduction is fundamentally dependent upon preventative strategies designed to create robust cropping systems that maintain low weed densities. Diverse crop rotation forms the basis of preventative strategies as it inherently varies cropping system conditions to avoid weed adaptation. There is evidence that residual weed densities resulting from herbicide use reduction are manageable within competitive cropping systems. A great deal of research has been done on herbicide use reduction on field crops in Canada, and most projects report definite possibilities for herbicide use reduction in field crop production in Canada. Synthesizing and extending this information and customizing it for use on individual farms remain challenges. Collaboration between researchers and farmers can help to build successful strategies for herbicide use reduction which reflect the context of modern farming, the will of farmers and the culture of technology adoption among farmers. Key words: Pesticide use reduction, low-input agriculture, integrated pest management, integrated weed management

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Effects of crop management practices on Echinochloa crus‐galli and Chenopodium album seed production in a maize/soyabean rotation

Cited by 18 publications

References 25 publications

Influence of selected soil properties, soil management practices and socio‐economic variables on relative weed density in a hand hoe‐based conservation agriculture system

Influence of selected soil properties, soil management practices and socio‐economic variables on relative weed density in a hand hoe‐based conservation agriculture system

Crop and weed response to nutrient source, tillage and weed control method in a corn-soybean rotation

Strategies and tactics for herbicide use reduction in field crops in Canada: A review

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