Constraints in implementing biological weed control: A review

Ghosheh, Hani Z.

doi:10.1111/j.1445-6664.2005.00163.x

Cited by 54 publications

(41 citation statements)

References 58 publications

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“…Several attempts have been made to control the spread of these plants in many parts of the world (Ghosheh 2005;Tellez et al 2008). This study represents an attempt to convert these wastes to potential wealth by identifying and isolating an important commercial enzyme from E. crassipes leaves.…”

Section: Resultsmentioning

confidence: 99%

Catalytic and kinetic properties of purified Eichhornia crassipes leaf peroxidase

Arise¹,

Osundahunsi²,

Farohunbi³

et al. 2016

EEB

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Peroxidase from Eichhornia crassipes leaf was purified 23.58 fold with 18.58% yield by means of (NH 4 ) 2 SO 4 precipitation, ion exchange and Sephadex G-75 gel filtration chromatography. Optimum temperature and substrate-dependent pH optimum for enzyme activity were 40 °C and pH 4.0, 9.0 and 6.0 for 2,2'-azino-bis-(3-ethylbenzthiazolin)-6-sulfonate (ABTS), guaiacol and pyrogallol, respectively. The enzyme had high pH stability and moderate thermal stability at temperatures up to 60 °C; the activation energy of inactivation of the enzyme was ~122.29 kJ mol -1 . Temperature-denaturing and spontaneous recovery were shown to be time-dependent while Ca 2+ -enhanced recovery of the denatured enzyme was in a time-dependent manner. The enzyme showed preferential affinity for ABTS over guaiacol and pyrogallol with K M values of 31.11, 21.91 and 6.45 mM respectively. It was reversibly inhibited by Pb 2+ , Hg 2+ and EDTA while urea only caused loss of ~30.40% activity after 60 min of incubation. E. crassipes leaf peroxidase has potential use for broad range of applications.

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Section: Resultsmentioning

confidence: 99%

Catalytic and kinetic properties of purified Eichhornia crassipes leaf peroxidase

Arise¹,

Osundahunsi²,

Farohunbi³

et al. 2016

EEB

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show abstract

“…A long dew period is required by some pathogens for infection on the aerial surfaces of target weeds [63]. Some organisms have limited shelf lives, and they are not suited for long-term storage [64]. Xanthomonas campestris pv.…”

Section: Factors Affecting the Efficacy Of Bioherbicidementioning

confidence: 99%

Bioherbicides in Organic Horticulture

Cai¹,

Gu²

2016

Horticulturae

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Organic horticulture producers rank weeds as one of their most troublesome, time-consuming, and costly production problems. With the increasing significance of organic horticulture, the need for new bioherbicides to control weeds has grown. Potential bioherbicides may be developed from pathogens, natural products, and extracts of natural materials. Fungal and bacteria pathogens are two important types of microbial agents that have potential to be used as bioherbicides. The byproducts of natural sources such as dried distillers grains with solubles (DDGS), corn gluten meal (CGM), and mustard seed meals (MSMs) have shown herbicidal activities in controlling many weed species. Some essential oil extracts have shown bioherbicide potential as well. The efficacy of a bioherbicide is the main limiting factor for its application, and it may be affected by environmental factors such as humidity and moisture, the application method, the spectrum of the bioherbicide, and the type of formulation. In addition to efficacy, costs and concerns about potential human health threats are also limitations to bioherbicide use. As the integration of bioherbicide technology into current weed management systems may help manage herbicide resistance, reduce production costs, and increase crop yields, future research should involve the development of more cost-effective and efficient bioherbicides for control of weeds, as well as the optimization of production methods and cultural practices with use of candidate bioherbicides.

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“…Biotechnology has a pivotal role in the development and modification of bioherbicides. Advancements in screening, formulation, augmentation, and application of bioherbicides depend upon biotechnological tools (Ghosheh 2005).…”

Section: Bioherbicidesmentioning

confidence: 99%

Nonconventional Weed Management Strategies for Modern Agriculture

2015

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Weeds are a significant problem in crop production and their management in modern agriculture is crucial to avoid yield losses and ensure food security. Intensive agricultural practices, changing climate, and natural disasters affect weed dynamics and that requires a change in weed management protocols. The existing manual control options are no longer viable because of labor shortages; chemical control options are limited by ecodegradation, health hazards, and development of herbicide resistance in weeds. We are therefore reviewing some potential nonconventional weed management strategies for modern agriculture that are viable, feasible, and efficient. Improvement in tillage regimes has long been identified as an impressive weed-control measure. Harvest weed seed control and seed predation have been shown as potential tools for reducing weed emergence and seed bank reserves. Development in the field of allelopathy for weed management has led to new techniques for weed control. The remarkable role of biotechnological advancements in developing herbicide-resistant crops, bioherbicides, and harnessing the allelopathic potential of crops is also worth mentioning in a modern weed management program. Thermal weed management has also been observed as a useful technique, especially under conservation agriculture systems. Last, precision weed management has been elaborated with sufficient details. The role of remote sensing, modeling, and robotics as an integral part of precision weed management has been highlighted in a realistic manner. All these strategies are viable for today's agriculture; however, site-specific selection and the use of right combinations will be the key to success. No single strategy is perfect, and therefore an integrated approach may provide better results. Future research is needed to explore the potential of these strategies and to optimize them on technological and cultural bases. The adoption of such methods may improve the efficiency of cropping systems under sustainable and conservation practices.

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Constraints in implementing biological weed control: A review

Cited by 54 publications

References 58 publications

Catalytic and kinetic properties of purified Eichhornia crassipes leaf peroxidase

Catalytic and kinetic properties of purified Eichhornia crassipes leaf peroxidase

Bioherbicides in Organic Horticulture

Nonconventional Weed Management Strategies for Modern Agriculture

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