Weed Management

Brand, Jason; Yaduraju, N. T.; Shivakumar, B. G.; Murray, LarnMc

doi:10.1007/978-1-4020-6313-8_10

Cited by 18 publications

(12 citation statements)

References 24 publications

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“…Grain yield losses of up to 84% have been attributed to weed competition in lentil (Swanton et al 1993; Mohamed et al 1997; Elkoca et al 2005; McDonald et al 2007). Chemical control using herbicides is the major method of weed management in lentil in developed countries and is becoming increasingly popular in many developing countries (Brand et al 2007; Yenish et al 2009). Until the release of imidazolinone (IMI; acetohydroxyacid synthase [AHAS] inhibitors) herbicide–tolerant lentil cultivars in North America in 2006 (Muehlbauer et al 2009) and Australia in 2012 (Materne et al 2011), limited safe and effective in-crop herbicide options were available for controlling broadleaf weeds.…”

Section: Introductionmentioning

confidence: 99%

Development of High Levels of Metribuzin Tolerance in Lentil

et al. 2018

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Lentil (Lens culinarisMedik.) is an important and expanding crop in southern Australia and a significant crop in western Canada. Currently, production in both countries is limited by an inability to effectively control weeds, due in part to a lack of registered safe and effective herbicides. Metribuzin is a broad-spectrum herbicide providing an alternative weed control option to the imidazolinones, but it has low crop safety in lentil. Two methods, germplasm screening using a hydroponic sand assay and field screening of a large mutated population of the Australian cultivar ‘PBA Flash’ were initially used to identify lines with putative metribuzin tolerance over current cultivars. Dose–response experiments showed the germplasm line SP1333 had GR50(the rate required to reduce dry weight 50%) values up to four times higher than PBA Flash. However, the mutation selections M043 and M009 had GR50values more than 25 times higher than PBA Flash. A field study in Canada, under conditions of induced shade and no shade 72 h before POST application of metribuzin, confirmed the intermediate level of tolerance in SP1333 and the high level in the two mutant lines compared with 20 Canadian and Australian genotypes. This relative increase in metribuzin tolerance of the two mutant lines over the parent cultivar is higher than all previous reports in a range of crop species. The development of large mutant populations combined with large M2field screens was a successful method for developing high levels of metribuzin tolerance in lentil. The estimated mutation rate of the mutant lines was 9.4×10−8. All three lines are currently being used as parents in lentil breeding programs.

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Section: Introductionmentioning

confidence: 99%

Development of High Levels of Metribuzin Tolerance in Lentil

et al. 2018

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“…Several weeds in the agroecosystem possess allelopathic efficiency (Weston and Duke, 2003). Changes and occurrence of many weed species may be related to specific farming systems as well as the agro-technical treatments such as application of herbicides, soil tillage, fertilizers, and irrigation (Brand et al, 2007). Likewise, the composition and structure of weed communities have a significant relationship with crop type and soil characters .…”

Section: Introductionmentioning

confidence: 99%

Interactions between Sonchus oleraceus L. and some weeds in agroecosystems in Egypt

Hassan

Gomaa

Fahmy

et al. 2014

Annals of Agricultural Sciences

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Interference of Sonchus oleraceus was studied by evaluating its competitive and allelopathic potential on three weed species: Brassica nigra, Chenopodium murale and Melilotus indicus. The allelopathic potential of S. oleraceus was assessed using the S. oleraceus-infested soil collected from its dominating communities and its root exudates trapped using living S. oleraceus, while its competitive ability was assessed in greenhouse in an additive design with ratio 1:1 at different densities. The rhizosphere soil of S. oleraceus inhibited germination and growth of B. nigra and M. indicus. Chlorophyll content of the target weeds was not affected in this test. Soils containing living S. oleraceus inhibited germination and growth of all weeds except germination of C. murale. Interspecific competition reduced germination of C. murale and M. indicus, and increased mortality of the former at all densities. HPLC analyses for soil samples indicated the presence of several phenolic compounds among which caffeic acid and catechol were abundant in the S. oleraceus-infested soil while caffeic and ferulic acids were abundant in its root exudates. The data suggest that both allelopathic and competitive potential of S. oleraceus function, and its interference plays at least a partial role in the community organization of weeds in agroecosystem. ª 2014 Production and hosting by Elsevier B.V. on behalf of Faculty of Agriculture, Ain Shams

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“…The physical removal or killing of weeds is usually done by hand or by means designed tools for this task, which varies between cultures. Pre and postsowing, pre and post-emergence with chemicals applied methods, provides a sustainable and long-term strategy to minimize weeds and maximize crop yields [3]. The widespread use of herbicides in agricultural fields has led to the development of anti-herbicide resistance in weeds.…”

Section: Introductionmentioning

confidence: 99%

A Review on Parameters Affecting the Choice of Alternative (Non-Chemical) Weed Control Methods

Şahin¹

2019

EJERS

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Chemical using as a weed control method is the most preferred method in weed control because they are easily accessible, easily applicable and inexpensive. But, with the new environment-friendly regulations, the importance of non-chemical methods has increased all over the world. In addition, organic farm and non-chemical agricultural methods are gaining importance with increasing social environment and health awareness. Non-chemical methods, called, "alternative methods” have been one of the most popular research subjects in recent years. The physical removal or killing of weeds is usually done by hand or by means designed tools for this task, which varies from country to country. The most known modern non-chemical weed control methods are; electric current, microwave heating, superheated steam, infrared using, pneumatic system, freeze-drying, laser cutting, and fresnel lens systems. The most popular of these methods are; electric current method and microwave heating. In electric current and microwave heating methods, there are no chemical residues in soil and plants after application. It has been shown in the studies that, the microwave weed control method can destroy weeds and seeds when appropriate frequency, sufficient time and required power level are selected. Therefore, in the selection of non-chemical weed control methods, some important parameters of plant and soil should be known. The electrical and dielectric properties of plants and soil such as, electrical resistance (R), impedance (Z), dielectric constant (ε’), loss factor (ε’’), the permittivity (permeability ( and conductivity (σ) should be known especially in microwave and electric current methods. The other parameters like the age, height and density of the plant is an issue to be considered in all control methods. But, the moisture content of soil and plant may not be taken into consideration in hot water and steam applications. For the freeze-drying method, the moisture and water content of the plant and soil must also be taken into account.

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Weed Management

Cited by 18 publications

References 24 publications

Development of High Levels of Metribuzin Tolerance in Lentil

Development of High Levels of Metribuzin Tolerance in Lentil

Interactions between Sonchus oleraceus L. and some weeds in agroecosystems in Egypt

A Review on Parameters Affecting the Choice of Alternative (Non-Chemical) Weed Control Methods

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