Effects of the herbicide glyphosate [n-(phosphonomethyl) glycine] on biodiversity and organisms in the soil

Badani, Hana; Fatima, Djadouni; Haddad, Fatma Zohra

doi:10.14712/23361964.2023.1

Cited by 2 publications

(1 citation statement)

References 67 publications

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“…Glyphosate [N-(phosphonomethyl)glycine] is one of the most widely used herbicides, with broad-spectrum systemic action [ 6 , 7 ]. It is composed of phosphonate and inhibits the shikimate pathway by means of the enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPs) [ 8 , 9 ], interfering with the biosynthesis of aromatic amino acids [ 10 ]. It is a nonselective herbicide for conventional crops that have not been genetically modified to be tolerant [ 11 ], with postemergence application of the target plant.…”

Section: Introductionmentioning

confidence: 99%

Control of Urochloa decumbens Using Glyphosate Applied by Remotely Piloted Aircraft and Ground Sprayer with Different Spray Nozzles

Lopes,

Cunha,

Nomelini

et al. 2024

Plants

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The use of remotely piloted aircraft (RPA) to spray pesticides currently occurs, but knowledge about this technology is lacking due to the different locations, targets, and products applied. The objective of this study was to evaluate the control of Urochloa decumbens with glyphosate applied using an RPA (10 L ha−1) equipped with different spray nozzles (XR 11001 and AirMix 11001). For the purpose of comparison, ground application was also performed (100 L ha−1). The deposition was evaluated by means of the quantification of a tracer by spectrophotometry, the droplet spectrum was evaluated with water-sensitive paper, and the control efficiency was evaluated based on visual measurements with percentage scores. Statistical process control was used to analyse the quality of the deposition in the area. The results showed that the application via RPA presented a greater amount of tracer on the leaves than the ground application, suggesting that the former is a good option for application, even providing a lower coverage and number of droplets per area. Both application methods were effective at controlling Urochloa decumbens. The nozzles showed potential for use in applications, with control efficiency higher than 84% from 21 days after application. The percentage of droplets smaller than 100 μm in the applications was less than 5%. No nonrandom behaviour was observed during deposition, indicating a high-quality process.

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Section: Introductionmentioning

confidence: 99%

Control of Urochloa decumbens Using Glyphosate Applied by Remotely Piloted Aircraft and Ground Sprayer with Different Spray Nozzles

Lopes,

Cunha,

Nomelini

et al. 2024

Plants

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Can biostimulants and tillage rotations improve dryland crop productivity and soil microbes?

Tshuma,

Bennett,

Swanepoel

et al. 2024

Agronomy Journal

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Soil microbes are essential for soil nutrient cycling. However, frequent tillage and the use of synthetic agrochemicals can reduce soil microbial diversity and enzyme activity. In this study, the effects of four tillage treatments (mouldboard plough, shallow tine‐tillage, no‐tillage, and tillage rotation) and two rates of synthetic agrochemicals (standard and reduced, with biostimulants) on soil microbial diversity and enzyme activity were investigated between 2018 and 2020 in a Mediterranean climate zone in South Africa. It was hypothesized that a reduction in tillage frequency and quantity of synthetic agrochemical application would lead to greater microbial diversity and enzyme activity. Soil samples were collected from the 0‐ to 150‐mm layer of a field trial under a dryland crop rotation system. Soil microbial species richness and abundance were assessed using the Shannon–Wiener diversity and evenness indices. The activities of four microbial enzymes—β‐glucosidase, acid phosphatase, alkaline phosphatase, and urease—were used to evaluate ecosystem functioning. The combined effects of tillage rotation with a shallow tine implement and the application of biostimulants failed to significantly improve soil microbial diversity, enzyme activity, and crop productivity relative to other treatments. However, the combination did not reduce the wheat (Triticum aestivum) grain yield and quality, and soil biological parameters. Furthermore, the less intensive tillage treatments, ST, NT, and ST‐NT‐NT‐NT, resulted in higher enzyme activity than the mouldboard treatment. Therefore, we suggest that combining non‐intensive tillage with reduced synthetic agrochemical use can be a safer, more environmentally friendly alternative to intensive tillage and high agrochemical application in dryland cropping systems.

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Effects of the herbicide glyphosate [n-(phosphonomethyl) glycine] on biodiversity and organisms in the soil

Cited by 2 publications

References 67 publications

Control of Urochloa decumbens Using Glyphosate Applied by Remotely Piloted Aircraft and Ground Sprayer with Different Spray Nozzles

Control of Urochloa decumbens Using Glyphosate Applied by Remotely Piloted Aircraft and Ground Sprayer with Different Spray Nozzles

Can biostimulants and tillage rotations improve dryland crop productivity and soil microbes?

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