Weed density and diversity under glyphosate-resistant crop sequences

Puricelli, Eduardo; Tuesca, Daniel

doi:10.1016/j.cropro.2004.10.005

Cited by 64 publications

(47 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As a consequence of the use of herbicides, resistance of several weed species in minimum and no-tillage systems has been reported, and cases of multiple-resistance of the same weed species to several herbicides have also been documented [38,39]. For example, cutleaf evening primrose (Oenothera laciniate Hill) has become resistant to glyphosate and paraquat [33,40,41].…”

mentioning

confidence: 99%

Sustainable Weed Management for Conservation Agriculture: Options for Smallholder Farmers

Sims¹,

Corsi²,

Gbèhounou³

et al. 2018

Agriculture

View full text Add to dashboard Cite

Land degradation and soil fertility deterioration are two of the main causes of agricultural production stagnation and decline in many parts of the world. The model of crop production based on mechanical soil tillage and exposed soils is typically accompanied by negative effects on the natural resource base of the farming environment, which can be so serious that they jeopardize agricultural productive potential in the future. This form of agriculture is destructive to soil health and accelerates the loss of soil by increasing its mineralization and erosion rates. Conservation agriculture, a system avoiding or minimizing soil mechanical disturbance (no-tillage) combined with soil cover and crop diversification, is considered a sustainable agro-ecological approach to resource-conserving agricultural production. A major objective of tillage is supposed to be weed control, and it does not require very specific knowledge because soil inversion controls (at least temporarily) most weeds mechanically (i.e., by way of burying them). However, repeated ploughing only changes the weed population, but does not control weeds in the long term. The same applies to the mechanical uprooting of weeds. While in the short term some tillage operations can control weeds on farms, tillage systems can increase and propagate weeds off-farm. The absence of tillage, under conservation agriculture, requires other measures of weed control. One of the ways in which this is realized is through herbicide application. However, environmental concerns, herbicide resistance and access to appropriate agro-chemicals on the part of resource-poor farmers, highlight the need for alternative weed control strategies that are effective and accessible for smallholders adopting conservation agriculture. Farmers in semi-arid regions contend with the additional challenge of low biomass production and, often, competition with livestock enterprises, which limit the potential weed-suppressing benefits of mulch and living cover crops. This paper reviews the applicability and efficacy of various mechanical, biological and integrated weed management strategies for the effective and sustainable management of weeds in smallholder conservation agriculture systems, including the role of appropriate equipment and prerequisites for smallholders within a sustainable intensification scenario.Keywords: smallholder farming; conservation agriculture; sustainable and ecological weed management; preventive; cultural and direct control methods of weed management

show abstract

mentioning

confidence: 99%

Sustainable Weed Management for Conservation Agriculture: Options for Smallholder Farmers

Sims¹,

Corsi²,

Gbèhounou³

et al. 2018

Agriculture

View full text Add to dashboard Cite

show abstract

“…strain PCC6803 (3,10,24,27,28). An inteinbased split-gene technique, termed intein-mediated protein complementation (IPC), has been utilized to reconstitute the activity of a transgenic product with the goal of limiting the spread of transgenes from genetically modified plants to weedy relatives (6,7,13,16,18,26). Theoretically, the split-transgene methodology is very straightforward, but it is not trivial to find a site to split a protein and subsequently have the truncated protein fragments form an active complex (9,20,22,25).…”

mentioning

confidence: 99%

Reconstitution of Glyphosate Resistance from a Split 5-Enolpyruvyl Shikimate-3-Phosphate Synthase Gene in Escherichia coli and Transgenic Tobacco

Dun

Wang

et al. 2007

Appl Environ Microbiol

View full text Add to dashboard Cite

A highly N-phosphonomethylglycine (glyphosate)-resistant Pseudomonas fluorescens G2 5-enolpyruvyl shikimate-3-phosphate synthase (EPSPS) was mapped to identify potential split sites using a transposon-based linker-scanning procedure. Intein-mediated protein complementation was used to reconstitute glyphosate resistance from the genetically divided G2 EPSPS gene in Escherichia coli strain ER2799 and transgenic tobacco.

show abstract

“…Although grass weeds present at the time of application of early emergence were controlled, regardless of size, tall broadleaf weeds could be more difficult to control (Gower et al, 2003). Puricelli and Tuesca (2005) found that sequential application of glyphosate provided excellent control of early emergence annual broad leaved weeds such as Portulaca oleracea and grass annuals such as Digeria sanguinalis. However, continual glyphosate application for longer periods of time may lead to the development or higher increase in abundance of weeds tolerant to the herbicide.…”

Section: Weed Control Efficiency Of Glyphosate Tolerant Maizementioning

confidence: 99%

Weed management options in transgenic stacked and non transgenic maize (Zea mays) hybrids-A review

Sivagamy

Chinnusamy

Parasuraman

2017

View full text Add to dashboard Cite

Weeds are generally hardy species having fast growth, deep root system and capable of competing very efficiently with cultivated crops for the available resources and adversely affect the crop growth and yield. Weed management systems that rely on post emergence control assume that crops can tolerate competition for certain periods of time without suffering yield losses. Initial slow growth particularly at early crop growth stages and wider plant spacing of maize crop encourages fast and vigorous growth of weeds. It is of paramount importance that, competition from weeds must be minimized to achieve optimum yield. Among the different weed control methods, chemical method bears many advantages in suppressing weed growth and to get healthy and vigorous crop stand. Non-selective herbicide molecules with a variety of mode of action were discovered, developed and marketed for successful weed control programme.

show abstract

Weed density and diversity under glyphosate-resistant crop sequences

Cited by 64 publications

References 22 publications

Sustainable Weed Management for Conservation Agriculture: Options for Smallholder Farmers

Sustainable Weed Management for Conservation Agriculture: Options for Smallholder Farmers

Reconstitution of Glyphosate Resistance from a Split 5-Enolpyruvyl Shikimate-3-Phosphate Synthase Gene in Escherichia coli and Transgenic Tobacco

Weed management options in transgenic stacked and non transgenic maize (Zea mays) hybrids-A review

Contact Info

Product

Resources

About