Effect of Pesticides and Chemical Fertilizers on the Nitrogen Cycle and Functional Microbial Communities in Paddy Soils: Bangladesh Perspective

Rahman, Mizanur; Khanom, Azmerry; Biswas, Shudhangshu Kumar

doi:10.1007/s00128-020-03092-5

Cited by 21 publications

(5 citation statements)

References 46 publications

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“…The result could be explained by the reports, which have indicated that the Nitrospira community shift was affected by pH, NH 4 + , and moisture [36] and a high rate of organic manure amendment suppressed the growth of Nitrospirota by 20-35% in the paddy fields [37]. It has been found that decreased amounts of soil chemical properties such as NH 3 -N decreases the abundance of anaerobic ammonium oxidizers when CFs are applied long-term in paddy soils compared with upland soils in Bangladesh [38]. The phylum Nitrospirota comprises six sublineages consisting of canonical nitrite oxidizers and complete ammonia oxidizers [39].…”

Section: Discussionmentioning

confidence: 99%

Adaptations of Potential Nitrogenase Activity and Microbiota with Long-Term Application of Manure Compost to Paddy Soil

Xia

Seino

et al. 2023

Environments

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Biological nitrogen fixation complements nitrogen from fertilizers in crop plants under natural conditions. It also contributes to the reduction in chemical fertilizer (CF) utilization in cultivated lands, which fits the concept of sustainable agriculture. From this viewpoint, however, it is still unknown in paddy fields how soil bacterial nitrogenase and microbiota are affected by applied materials in the soil. Therefore, in this study, the effects of long-term material applications on potential nitrogenase activity and the microbiota of soil bacteria were investigated. The nitrogenase activity tended to be higher in manure compost (MC)-applied soils than in CF-applied soils in both summer and winter. Soil bacterial alpha diversity increased whereas soil ammonia availability decreased with the MC application. The dynamic response of soil bacterial microbiota was caused by the MC application. The abundance of Nitrospira, a class of ammonia and nitrite oxidation bacteria, was lower and the abundance of alpha-Proteobacteria was higher in the MC-applied soils than in the CF-applied soils. These results suggest that the alpha diversity increase and restricted availability of NH3-N might contribute to the increase in potential nitrogenase activity in the long-term MC-applied soils.

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Section: Discussionmentioning

confidence: 99%

Adaptations of Potential Nitrogenase Activity and Microbiota with Long-Term Application of Manure Compost to Paddy Soil

Xia

Seino

et al. 2023

Environments

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“…The use of free pesticides adversely affected the abundance of soil microorganisms like Pseudomonas, Bacillus, Pseudarthrobacter, Streptomyces, Penicillium, and Talaromyces from 1.4 to 56.0 times for different types of pesticides [42] . Overuse of pesticides affects the abundance of nitrifying bacteria Nitrospira strain 'Nitrospira inopinata' in paddy soils [43] . The application of organophosphate pesticides chlorpyrifos, phosalone, dimethoate and a pyrethroid insecticide, λ-cyhalothrin at commercial doses led to a decrease in soil microbial respiration.…”

Section: Effect On Microorganismsmentioning

confidence: 99%

Effect of pesticide toxicity in aquatic environments: A recent review

Kadiru¹,

Patil²,

D’Souza³

2022

Int. J. Fish. Aquat. Stud.

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Pesticides are widely used in modern agriculture to enhance the quantity and quality of yield in an effective and economical manner, leading to improved food security worldwide. Organochlorines, organophosphates, carbamates and pyrethroids are the four major groups of pesticides used. However, with increasing pesticide use, especially in developing countries, the risk of its toxicity caused by them is on the rise. Despite a low per hectare use of pesticides in India, their injudicious use has led to the presence of pesticide residues in both terrestrial and aquatic ecosystems. It has been observed that major riverine ecosystems like Ganges, Yamuna, Cauvery, Tapi and many others show the presence of pesticides in the water column as well as the river bed sediments. Pesticides tend to bioaccumulate in the food chain. Agricultural runoff into aquatic systems raises the risk of exposure of pesticides to non-target species, leading to adverse consequences on the ecosystem. In this review, an attempt has been made to critically review the usage of pesticides in India, their entry into riverine ecosystems and the impact of pesticides on freshwater microorganisms, invertebrates and vertebrates. The review of legislation in India to control pesticide usage shows that proper implementation of the laws is needed on an urgent basis.

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“…The herbicide application area reached 107 million ha in 2014 and covered 65% of the total arable land in China [11]. However, most studies have shown that herbicide application can pose potential risks to enzyme activity [12][13][14][15] and nontarget soil microorganisms [10,16,17], as well as have adverse consequences for N metabolism [18,19]. Ammonia volatilization in soil is a process in which the free NH 4 + -N in soil is converted into gaseous NH 3 , which then volatilizes into the air from the surface of the soil, and the main driving factor for this process is urease activity.…”

Section: Introductionmentioning

confidence: 99%

Herbicide Applications Reduce Gaseous N Losses: A Field Study of Three Consecutive Wheat–Maize Rotation Cycles in the North China Plain

Zheng,

Zou,

Wang

et al. 2024

Agronomy

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Herbicide residues in farmland soils have attracted a great deal of attention in recent decades. Their accumulation potentially decreases the activity of microbes and related enzymes, as well as disturbs the nitrogen cycle in farmland soils. In previous studies, the influence of natural factors or nitrogen fertilization on the soil nitrogen cycle have frequently been examined, but the role of herbicides has been ignored. This study was conducted to examine the effects of herbicides on NH3 volatilization- and denitrification-related nitrogen loss through three rotation cycles from 2013 to 2016. The four treatments included no urea fertilizer (CK), urea (CN), urea+acetochlor-fenoxaprop-ethyl (AC-FE), and urea+2,4D-dicamba (2,4D-DI) approaches. The results showed that the application of nitrogen fertilizer significantly increased the nitrogen losses from ammonia volatilization and denitrification in the soil. Ammonia volatilization was the main reason for the gaseous loss of urea nitrogen in a wheat–maize rotation system in the North China Plain (NCP), which was significantly higher than the denitrification loss. In the CK treatment, the cumulative nitrogen losses from ammonia volatilization and denitrification during the three crop rotation cycles were 66.64 kg N hm−2 and 8.07 kg N hm−2, respectively. Compared with CK, the nitrogen losses from ammonia volatilization and denitrification under the CN treatment increased 52.62% and 152.88%, respectively. The application of AC-FE and 2,4D-DI significantly reduced the nitrogen gas losses from the ammonia volatilization and denitrification in the soil. Ammonia volatilization reduction mainly occurred during the maize season, and the inhibition rates of AC-FE and 2,4D-DI were 7.72% and 11.80%, respectively, when compared with CN. From the perspective of the entire wheat–maize rotation cycle, the inhibition rates were 5.41% and 7.23% over three years, respectively. Denitrification reduction also mainly occurred in the maize season, with the inhibition rates of AC-FE and 2,4D-DI being 34.12% and 30.94%, respectively, when compared with CN. From the perspective of the entire wheat–maize rotation cycle, the inhibition rates were 28.39% and 28.58% over three years, respectively. Overall, this study demonstrates that herbicides could impact the nitrogen cycle of farmland soil ecosystems via the suppression of ammonia volatilization and denitrification rates, thus reducing gaseous N losses and mitigating global climate change.

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Effect of Pesticides and Chemical Fertilizers on the Nitrogen Cycle and Functional Microbial Communities in Paddy Soils: Bangladesh Perspective

Cited by 21 publications

References 46 publications

Adaptations of Potential Nitrogenase Activity and Microbiota with Long-Term Application of Manure Compost to Paddy Soil

Adaptations of Potential Nitrogenase Activity and Microbiota with Long-Term Application of Manure Compost to Paddy Soil

Effect of pesticide toxicity in aquatic environments: A recent review

Herbicide Applications Reduce Gaseous N Losses: A Field Study of Three Consecutive Wheat–Maize Rotation Cycles in the North China Plain

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