Organic and Inorganic Fertilizer Contaminants in Agriculture: Impact on Soil and Water Resources

Rashmi, I.; Roy, Trisha; Kartika, Kristi; Pal, Raj; Coumar, Vassanda; Kala, S.; Shinoji, K. C.

doi:10.1007/978-3-030-41552-5_1

Cited by 70 publications

(43 citation statements)

References 146 publications

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“…The soil in the described experiment can be considered non-salinated, its EC was below 0.4 mS cm −1 . Although fertilisation, and not only industrial activities [67], can cause soil contamination [68].…”

Section: Discussionmentioning

confidence: 99%

Chemical and Biological Properties of Sandy Loam Soil in Response to Long-Term Organic–Mineral Fertilisation in a Warm-Summer Humid Continental Climate

et al. 2020

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In 2019, 71 years after the establishment of a static fertiliser experiment, the chemical and biological properties of Luvisol soil with sandy-loam grain-size composition were determined. Soil samples were taken from six fertilised treatments: half-dose nitrogen, phosphorus and potassium in mineral fertilisers (½ NPK); full-dose nitrogen, phosphorus, potassium (NPK); manure fertilisation + nitrogen, phosphorus, potassium, magnesium and liming (FYM NPK Mg Ca); manure + mineral fertilisers without magnesium and liming (FYM NPK); manure + nitrogen and phosphorus (FYM NP); manure + nitrogen and potassium (FYM NK). The soil was tested in two layers at depths of 0–20 cm and 20–40 cm. Soil samples were tested for: pH in 1 M KCl (pH); electrical conductivity (EC); organic carbon content (OC); content of available phosphorus (Pa), potassium (Ka), magnesium (Mga) and sulphate sulphur (S-SO4); total number of bacteria (Bt), cellulolytic microorganisms (Bc), fungi (Ff) and actinomycetes (Ac); and alkaline phosphatase (AlP), acid phosphatase (AcP) and arylsulphatase (ArS) activity. The fertilisation that most favourably affected the chemical and biological properties of the soil was FYM NPK Mg Ca. This fertilisation increased: pH and EC; OC, Ka and Mga contents; Bt and Bc abundance; and AlP activity relative to all the methods of mineral and organic–mineral fertilisation that did not include all the ingredients of mineral fertilisers. On the other hand, the least favourable soil properties were formed by ½ NPK fertilisation in the 0–20 cm layer, and by the long-term use of mineral fertilisers only in the 20–40 cm layer.

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Section: Discussionmentioning

confidence: 99%

Chemical and Biological Properties of Sandy Loam Soil in Response to Long-Term Organic–Mineral Fertilisation in a Warm-Summer Humid Continental Climate

et al. 2020

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“…This is usually achieved through the use of chemical fertilizers and/or pesticides, ameliorating the afore mentioned factors and the those of biotic and abiotic stresses [1]. However, indiscriminate use of agrochemicals has long lasting consequences on the environment, with some even being prohibited from further use, making agriculture one of the main sources of nonpoint pollution [2]. As the scientific community calls for more sustainability and environmentally friendly systems in agricultural practices, research on natural resources as alternatives to traditional chemical methods, such as plant biostimulants extracts, has been increasing in recent years [3].…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in the Molecular Effects of Biostimulants in Plants: An Overview

et al. 2021

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As the world develops and population increases, so too does the demand for higher agricultural output with lower resources. Plant biostimulants appear to be one of the more prominent sustainable solutions, given their natural origin and their potential to substitute conventional methods in agriculture. Classified based on their source rather than constitution, biostimulants such as humic substances (HS), protein hydrolysates (PHs), seaweed extracts (SWE) and microorganisms have a proven potential in improving plant growth, increasing crop production and quality, as well as ameliorating stress effects. However, the multi-molecular nature and varying composition of commercially available biostimulants presents challenges when attempting to elucidate their underlying mechanisms. While most research has focused on the broad effects of biostimulants in crops, recent studies at the molecular level have started to unravel the pathways triggered by certain products at the cellular and gene level. Understanding the molecular influences involved could lead to further refinement of these treatments. This review comprises the most recent findings regarding the use of biostimulants in plants, with particular focus on reports of their molecular influence.

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“…Generally, agricultural soils can be contaminated by toxic trace metals and pathogenic microorganisms when unsuitable manure, animal waste, and decaying plant material derived from agricultural processes are used as soil conditioners [ 32 ]. In fact, heavy metals and pathogenic microorganisms are of special concern for the environment and agro-ecosystems, and could cause serious problems for soil biotic compartments and human health.…”

Section: Resultsmentioning

confidence: 99%

Physico-Chemical Characterization and Biological Activities of a Digestate and a More Stabilized Digestate-Derived Compost from Agro-Waste

Vitti

Elshafie

Logozzo

et al. 2021

Plants

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The excessive use of agricultural soils and the reduction in their organic matter, following circular economy and environmental sustainability concepts, determined a strong attention in considering composting as a preferred method for municipalities and industries to recycle organic by-products. Microorganisms degrade organic matter for producing CO2, water and energy, originating stable humus named compost. The current study analyzed the chemical composition of a cow slurry on-farm digestate and a more stabilized digestate-derived compost (DdC), along with their phytotoxic, genotoxic and antifungal activities. The chemical analysis showed that digestate cannot be an ideal amendment due to some non-acceptable characteristics. Biological assays showed that the digestate had phytotoxicity on the tested plants, whereas DdC did not induce a phytotoxic effect in both plants at the lowest dilution; hence, the latter was considered in subsequent analyses. The digestate and DdC induced significant antifungal activity against some tested fungi. DdC did not show genotoxic effect on Vicia faba using a micronuclei test. Soil treated with DdC (5 and 10%) induced damping-off suppression caused by Fusarium solani in tomato plants. The eco-physiological data indicated that DdC at 5–10% could increase the growth of tomato plants. In conclusion, DdC is eligible as a soil amendment and to strengthen the natural soil suppressiveness against F. solani.

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Organic and Inorganic Fertilizer Contaminants in Agriculture: Impact on Soil and Water Resources

Cited by 70 publications

References 146 publications

Chemical and Biological Properties of Sandy Loam Soil in Response to Long-Term Organic–Mineral Fertilisation in a Warm-Summer Humid Continental Climate

Chemical and Biological Properties of Sandy Loam Soil in Response to Long-Term Organic–Mineral Fertilisation in a Warm-Summer Humid Continental Climate

Recent Advances in the Molecular Effects of Biostimulants in Plants: An Overview

Physico-Chemical Characterization and Biological Activities of a Digestate and a More Stabilized Digestate-Derived Compost from Agro-Waste

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