Persistence Strategies of Weeds

Upadhyaya, Mahesh K.; Clements, David R.; Shrestha, Anil

doi:10.1002/9781119525622.ch16

Cited by 2 publications

(3 citation statements)

References 122 publications

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“…The decline in ALS activity for C 3 and C 4 species was consistent with previous works [27][28][29], and it supported the conclusions reached by Ainsworth et al [22], that weeds can show a reduction in ALS regardless of their photosynthetic pathway. Raising the temperature and elevating the CO 2 concentration can increase photosynthesis, alter enzymatic activity, and affect the synthesis of amino acids and pigment production [15,30,31]. A number of herbicide action sites have, in turn, been specifically designed to disrupt these biochemical processes.…”

Section: Discussionmentioning

confidence: 99%

“…If the increase in the CO 2 concentration or temperature causes an increase in the leaf surface or in the number of leaves, such a change could increase the absorption and interception of the herbicide. In addition, increasing the temperature could improve the uptake and translocation of the herbicide by affecting the fluidity of the cuticle and the plasma membrane [31]. Increasing CO 2 or temperature can also reduce herbicide absorption through changes in leaf surface characteristics, such as reducing stomatal dimensions, increasing leaf thickness, or changing the cuticular wax's viscosity [32].…”

Section: Discussionmentioning

confidence: 99%

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Weed Response to ALS-Inhibitor Herbicide (Sulfosulfuron + Metsulfuron Methyl) under Increased Temperature and Carbon Dioxide

et al. 2023

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Information on the impact of climate change on the growth of weed species and their sensitivity to herbicides could help to establish an efficient weed management strategy. Due to the excessive use of acetolactate synthase (ALS)-inhibitor herbicides, resistance to those herbicides is increasing globally. It is, thus, crucial to find out whether the efficacy of these herbicides will change in the future due to the increase in temperatures and carbon dioxide concentration. Therefore, this work aimed to evaluate the impact of temperature and carbon dioxide (CO2) changes on the growth of Amaranthus retroflexus, Bromus tectorum, Chenopodium album, and Echinochloa crus-galli, including the assessment of sulfosulfuron 75% + metsulfuron methyl 5% efficacy in these weeds. A factorial experiment was performed in a completely randomized design with a factorial arrangement (2 × 2 × 6), including two CO2 concentrations (400 and 700 ppm), two temperature regimes (30/20 °C and 34/24 °C day/night), and six herbicide rates (0, 25, 37.5, 50, 62.5, and 75 g ha−1). As a result, it was seen that temperature and CO2 concentration changes influenced the morphological variables of the weeds. The temperature regime affected the herbicide’s effectiveness on B. tectorum and E. crus-galli. The herbicide’s efficacy on weed species was affected by the interaction of herbicide rates and the temperature regime, except for on E. crus-galli; the highest efficacy was observed at 30/20 °C and at a rate 50% higher (75 g ha−1) than the recommended one (50 g ha−1). Except for E. crus-galli, increasing CO2 concentrations enhanced the herbicide efficacy and ALS enzyme activity inhibition in all the weed species, but had the greatest effect on C3 weeds. We found that temperature and CO2 levels can alter the efficacy of weed control with herbicides, with clear differences between C3 and C4 plants. As a result, by increasing the temperature and concentration of CO2, breeders and farmers may achieve the desired control of weed species such as B. tectorum, C. album and A. retroflexus by applying lower doses of this herbicide.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Weed Response to ALS-Inhibitor Herbicide (Sulfosulfuron + Metsulfuron Methyl) under Increased Temperature and Carbon Dioxide

et al. 2023

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“…Depending on the crop, weed management tactics, weed composition, infestation period, and abiotic factors, crop production loss can vary greatly (e.g., climate and soil edaphic factors) [5,6]. Weed control is a crucial agronomic activity in agricultural farming.…”

Section: Introductionmentioning

confidence: 99%

Insightful Review of Bioherbicides Derived From Plants (Phyto-Herbicides)

Ammar,

Elmasry,

Ghosh

et al. 2023

J. Chil. Chem. Soc.

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Weed control during crop cultivation with integrated management remains a challenge. Bioherbicides such as plant extracts, allelochemicals, and microbes, are alternatives for weed control in sustainable agriculture. There are a few studies on the physiological influence of plant and microbial biopesticides on the germination and growth of weeds. Weed seed germination or growth is hindered when plant metabolites or extracts are absorbed, damaging the cell membrane, DNA, mitosis, amylase activity, and other biochemical processes. Weed growth is slowed by decreased rates of root-cell division, food absorption, photosynthetic pigment synthesis, and plant growth hormone synthesis, while the production of reactive oxygen species, stress-mediated hormones, and erratic antioxidant activity is increased. Bacterially produced lytic enzymes and toxins degrade the endosperm and utilize it for survival, preventing the growth of weed seeds.Forty-six plant species were assessed as phytoherbicides against 43 weeds, belonging to 19 families and 42 genera. Lamiaceae was the most represented family (21.7%) due to their volatile oils and phytotoxic substances, which eliminate weed growth. Thymus, Eucalyptus and Pinus were the most represented genera. Thirteen species' oils (38 %) and 21 species' extracts (62 %) were used as herbicides. This review provides an overview of the physiological alterations on undesired weeds by using phytoherbicides, which is of the least studied eco herbicides, for sustainable agriculture outlined in the Sustainable Development Strategy 2030.

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Persistence Strategies of Weeds

Cited by 2 publications

References 122 publications

Weed Response to ALS-Inhibitor Herbicide (Sulfosulfuron + Metsulfuron Methyl) under Increased Temperature and Carbon Dioxide

Weed Response to ALS-Inhibitor Herbicide (Sulfosulfuron + Metsulfuron Methyl) under Increased Temperature and Carbon Dioxide

Insightful Review of Bioherbicides Derived From Plants (Phyto-Herbicides)

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