Dissipation and Impact of Herbicides on Soil Properties in Tamil Nadu

Janaki, P.; Meena, S.; Shanmugasundaram, R.; Chinnusamy, C.

doi:10.1007/978-981-13-1038-6_5

Cited by 7 publications

(10 citation statements)

References 18 publications

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“…This showed the influence of nitrogen and balanced fertilization on the dissipation of atrazine and its bound residue formation in soil. Effect of N fertilization on herbicides dissipation upon continuous and repeated application was also reported by Chinnusamy et al (2012) and Janaki et al (2010Janaki et al ( , 2012aJanaki et al ( and 2012b FYM of low C:N ratio favors degradation of atrazine to DEDIA than the high C:N ratio residue mulching. This could be ascribed to the sorption and immobilization of HA by the un-decomposed cellulolytic crop residues used as residue mulch.…”

Section: Resultssupporting

confidence: 64%

“…Viti et al (2020) reported higher mineralization of herbicides in sandy loam soil where filter cake was added, and the maximum mineralized diuron, hexazinone, and metribuzin bound residues, observed was 7.7,46.7, and 8.1%respectively. Despite the introduction of numerous novel herbicides and new technology such as herbicide-tolerant crops, atrazine and pendimethalin respectively belonging to triazine and dinitroaniline groups are used widely and continuously in India as well as globally for the control of complex weed flora in different crops like maize, sugarcane, sunflower, cotton etc (Janaki et al, 2012a(Janaki et al, , 2012b(Janaki et al, , 2015 and2019; Janaki and Murali Arthanari, 2020). Most of the studies on these herbicides were undertaken to show their dynamic persistence, sorption and leaching behavior only limited work has been reported on their bound residues in soil due to repeated application (Janaki et al 2012b, 2019and Janaki and Murali Arthanari, 2020.…”

Section: Organismsmentioning

confidence: 99%

“…Despite the introduction of numerous novel herbicides and new technology such as herbicide-tolerant crops, atrazine and pendimethalin respectively belonging to triazine and dinitroaniline groups are used widely and continuously in India as well as globally for the control of complex weed flora in different crops like maize, sugarcane, sunflower, cotton etc (Janaki et al, 2012a(Janaki et al, , 2012b(Janaki et al, , 2015 and2019; Janaki and Murali Arthanari, 2020). Most of the studies on these herbicides were undertaken to show their dynamic persistence, sorption and leaching behavior only limited work has been reported on their bound residues in soil due to repeated application (Janaki et al 2012b, 2019and Janaki and Murali Arthanari, 2020. Thus, the present study was formulated to find out the non-extractable fraction of herbicides in soil under long-term fertilization through different organic and inorganic sources of nutrients in North Western agro-climatic zone of Tamil Nadu under semi-arid tropic region of India.…”

Section: Organismsmentioning

confidence: 99%

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Effect of repeated atrazine and pendimethalin application on their bound residues in long term fertilized soil of semi-arid tropic region in India

RagaPriya

Janaki

Arulmozhiselvan

2020

JANS

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Repeated and long term application of same herbicides forms bound residues in soil and becomes point source of pollution over a period of time and harms the soil microorganisms. Among the different herbicides, the atrazine and pendimethalin is widely and repeatedly used molecule in maize and sunflower cultivation for weed control, respectively. Hence the present study was undertaken to investigate the bound residue of the applied herbicides in soil under long term fertilized condition with varied nutrient sources since 1909 in North-Western agro-climatic zone of Tamil Nadu under the semi-arid tropic region of India. Soil samples were collected at the time of maize and sunflower harvest and analysed for the bound fraction of atrazine and pendimethalin compounds respectively. The results showed that the repeated application of these herbicides at recommended dose formed a considerable amount of non-extractable bound residues in soil. While the bound fraction of parent atrazine was found below detectable limit, pendimethalin was at a quantifiable level in the soil irrespective of fertilization sources. However the bound form of atrazine metabolites, namely Des ethyl Deisopropyl atrazine (DEDIA) and Hydroxy atrazine (HA) was extracted from the maize cultivated soil. Bound forms of HA (4.34%) and DEDIA (3.43%) and pendimethalin (3.14%)to the applied quantity were witnessed at a higher amount in control plot than the fertilized plots. The omission of any one major nutrient recorded elevated DEDIA bound form than the HA fraction. The non-extractable bound residues of both the herbicides were detected at different proportions according to the herbicide nature, sources of fertilization and the crops cultivated in the soil. The fraction of bound form of atrazine metabolites was detected at higher level than the pendimethalin in soil. The present study revealed that the bound residues of atrazine, its metabolites and pendimethalin can be mineralized into the soil solution and bio-augmented over a period of time under the conditions of repeated application. Hence the remobilization of bound residues of these herbicides must be considered while gauging the environmental hazard and effect on non-target organisms.

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Section: Resultssupporting

confidence: 64%

Section: Organismsmentioning

confidence: 99%

Section: Organismsmentioning

confidence: 99%

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Effect of repeated atrazine and pendimethalin application on their bound residues in long term fertilized soil of semi-arid tropic region in India

RagaPriya

Janaki

Arulmozhiselvan

2020

JANS

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“…Out of 6704 tonnes of pesticides formulation consumed in India, 1697 tonnes was glyphosate during -10 (Choudhury et al, 2018. Out of 66 herbicides registered in India, 12 are predominantly used in Tamil Nadu under different situations with the major consumption of 30.56% glyphosate (Janaki et al, 2019). It is mainly applied for the management of weeds in non cropped situations or as pre plant application to craft field preparation trouble-free.…”

Section: Introductionmentioning

confidence: 99%

Influence of arbuscular mycorrhizal fungi on glyphosate dissipation rate in okra cultivated sodic soil of Tamil Nadu

Brindhavani¹,

Janaki²,

Gomadhi³

et al. 2020

JEB

Self Cite

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Aim: To elucidate the influence of non target Arbuscular Mycorrhizal (AM) fungi on glyphosate dissipation in okra cultivated sodic soil of Tamil Nadu. Methodology: A field experiment was carried out during Rabi 2017-18 to study the interactive effect of glyphosate and Arbuscular mycorrhizal fungi (AM) on glyphosate dissipation in sodic soil from okra (A. esculentus) grown field. Experiment was laid adopting Randomized Block Design (RBD) with different rates of glyphosate and with and without AM fungi. Glyphosate was applied as pre-plant herbicide 20 days before sowing, and AM biofertilizer was applied as basal before sowing of okra. Soil samples were collected from the field at different time interval after glyphosate application and analysed for glyphosate and Amino Methyl Phosphonic Acid (AMPA) residues. Results: Glyphosate persistence decreased with time and degraded with the mean half-life ranging from 5.09 to 10.35 days by following first order reaction kinetics. AMPA was witnessed from day 1 and increased up to 15th day and followed first order reaction kinetics dissipation with the mean half-life of 8.62 to 13.06 days. Glyphosate and AMPA residues were recorded below detection limit (0.01 mg kg-1) on 45th and 60th days, respectively, in soil. Interpretation: The higher rates of glyphosate showed enhanced persistence of glyphosate and its metabolite AMPA in soil, hence application of AM fungi 100 kg ha-1 with lower glyphosate rate of 6 ml/L can be recommended for okra cultivated sodic soil with the safer waiting period of after 45 days harvest.

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“…In 2019, Asia-Pacific was the largest geographical section of market, accounting majority of market share. Herbicide contamination of soil, crops and water was found to be quite minimal in Tamil Nadu (Janaki et al 2019). Herbicide use in Tamil Nadu was low till late 20 th century, but has grown in the last 15 years due to manpower shortages, hence need for prompt weed management arises.…”

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confidence: 99%

Farmers’ buying behaviour of herbicides and preference towards weeding operations in Tamil Nadu

et al. 2022

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Herbicides can be regarded an effective tool for managing weeds, and their effective usage can reduce weed-related production losses up to 13%. Mordor Intelligence Report (2022), indicated that during the forecast period (2020–25), the worldwide herbicide market is expected to grow at a CAGR of 2.1%. The aim of the study was to assess the buying behaviour, market potential and constraints faced by the farmers’ during the purchase of herbicides. Study was carried out in selected districts of Tamil Nadu during 2021 with a sample size 200 farmers. The results of this study concluded that there is a significant association between demographic characteristics of the farmers and their preference in weeding operations at 1% significance. Cyperus (78.74), Trianthema (71.45) and Cynodon (69.61) were the major problematic weeds as reported by many of the sample farmers. Buying behavior of farmers’ preference towards product, dealer characteristics and consultancy were the most important parameters for the buying of herbicides.

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Dissipation and Impact of Herbicides on Soil Properties in Tamil Nadu

Cited by 7 publications

References 18 publications

Effect of repeated atrazine and pendimethalin application on their bound residues in long term fertilized soil of semi-arid tropic region in India

Effect of repeated atrazine and pendimethalin application on their bound residues in long term fertilized soil of semi-arid tropic region in India

Influence of arbuscular mycorrhizal fungi on glyphosate dissipation rate in okra cultivated sodic soil of Tamil Nadu

Farmers’ buying behaviour of herbicides and preference towards weeding operations in Tamil Nadu

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