Inhibition of nitrification by waste tea (‘Tea Fluff’)

Krishnapillai, S.

doi:10.1007/bf02277576

Cited by 19 publications

(3 citation statements)

References 3 publications

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“…N-serve was also found to be toxic to Nitrobacter sp. Neem cake -coated urea caused significantly lower Nitrosomonas populations in soil (Krishnapillai 1979). Similar observations were also recorded by Patra, Kiran, and Kumar (2002) with Artemisia oil-coated urea.…”

Section: Influence On the Microflora In Soilsupporting

confidence: 87%

Urease and Nitrification Retardation Properties in Natural Essential Oils and Their By‐products

Patra

Kiran

Pande

2006

Communications in Soil Science and Plant Analysis

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A laboratory incubation experiment was conducted with the natural essential oil of peppermint (Mentha spicata, MS), dementholized oil (DMO), terpenes, and a chemical inhibitor dicyandiamide (DCD), as coating materials for retardation of soil urea hydrolysis and nitrification. Retardation of nitrification was highest with DCD. The urea hydrolysis and nitrification processes were inhibited by all three natural products. Intensity of inhibition of both the processes increased with the level of application of the coating materials. With 0.50% level of coating, urea hydrolysis inhibition was in this decreasing order: DMO . terpenes . DCD . M. spicata oil; whereas at 1.00%, inhibition followed this order: terpenes . DMO . M. spicata oil . DCD. At 0.50% level of coating nitrification inhibition decreased in this order: M. spicata oil . DCD . DMO . terpenes; with 1.00%, the order was DCD . DMO . M. spicata oil . terpenes. All the three natural products (DMO, terpenes, and M. spicata oil) significantly retarded soil urease activity. These natural nitrification inhibitors significantly retarded Nitrosomonas. Nitrobacter, and total bacterial and actinomycete populations. Microbial activity retardation was more intense at a higher level of coating. We concluded that the different coating materials used could be used as potential retardants of urease activity as well as nitrification, unlike DCD, which is a potential retardant of nitrification and has little effect on the urea hydrolysis. The natural products, unlike chemical nitrification inhibitors, are less persistent, biodegradable, ecofriendly, and cheap.

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Section: Influence On the Microflora In Soilsupporting

confidence: 87%

Urease and Nitrification Retardation Properties in Natural Essential Oils and Their By‐products

Patra

Kiran

Pande

2006

Communications in Soil Science and Plant Analysis

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“…According to Krishnapillai (1979), tea waste (tea fluff) inhibits nitrification. Contrarily, Sivapalan et al (1985) found that polyphenol-rich plant materials, including tea residues, inhibit soil urease activity but had no inhibitory effect on nitrification (see page 170).…”

Section: Plant Residuesmentioning

confidence: 99%

Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity

Simihăian¹,

Kiss²

2002

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I Preface The purpose of our present work is to review the fundamental studies on inhibition of soil urease activity and the applied studies on improving efficiency of urea fertilizers by inhibition of soil urease activity. The general literature on these topics covers 65 years, and the patent literature comprises a period of nearly 40 years. Studies related to inhibition of soil urease activity were performed in a great number of countries' well representing all the continents. Full texts of the papers describing these studies were published in one of 18 languages·'. The literature data reviewed are structured into 10 chapters, 81 subchapters, and 224 sections. The bibliographical list consists of 830 papers cited. ·In alphabetical order:

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“…Thus, fertilize-N is converted to NO3 --N in soils at different rates depending upon the dynamics of soil nitrifiers. Krishnapillai (1979) reported that about 35 -50% of the ammonium and urea fertilizer applied to soils in tea plantations in Sri Lanka were nitrified within 3 to 4 weeks after application and the produced NO3rapidly leached from soil under high rainfall condition. In Sri Lanka, Nuwara Eliya, Kalpitiya and Marassana are some of the intensively vegetable grown regions that experience heavy application of nitrogen fertilizers.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of nitrifiers in soils of intensively vegetable cultivated areas in Sri Lanka

et al. 2019

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Nitrification tend to reduce the agronomic fertilizer use efficiency in cropping systems because nitrate, the end product of nitrification, has high potential to loss from soil environment due to denitrification and leaching. The population characteristics of ammonia oxidizing and nitrite oxidizing microorganisms carrying out nitrification in soils may affect the effectiveness of approaches taken to suppress nitrification. A study was conducted to assess the activity and abundance of nitrifiers in soils of intensively vegetable grown regions in Sri Lanka. Soil samples were collected from 72 locations across Nuwara Eliya, Marassana, Kalpitiya and Gannoruwa representing vegetable cultivated fields managed conventionally (n=45) and organically (n=9), and uncultivated areas (n=18). Basic soil characteristics were determined using standard procedures. Potential nitrification rate (PNR) and the abundance of ammonia oxidizers and nitrite oxidizers were estimated. Chemical characteristics of soils varied widely with pH, EC and organic C% ranging from 3.8 to 8.5, 0.04 to 0.94 dS/m and 0.9% to 4.5%, respectively. The PNR of the studied soils ranged from 0.18 to 15.80 NO3 --N/kg/h. The abundance of ammonia oxidizers and nitrite oxidizers ranged from 1.96 to 5.97 log10CFU g -1 and 1.36 to 5.63 log10CFU g -1 , respectively. The potential activity of nitrifiers did not correlate with the abundance of ammonia oxidizers or nitrite oxidizers. Thus, the functional and compositional diversities of nitrifying communities may be different across the soils. PNR values for studied soils are higher compared to reported values in literature. Hence, appropriate measures need to be taken to suppress nitrification as high nitrification rates could lead to reduce fertilizer use efficiency and increase risk of groundwater contamination with nitrate.

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Inhibition of nitrification by waste tea (‘Tea Fluff’)

Cited by 19 publications

References 3 publications

Urease and Nitrification Retardation Properties in Natural Essential Oils and Their By‐products

Urease and Nitrification Retardation Properties in Natural Essential Oils and Their By‐products

Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity

Dynamics of nitrifiers in soils of intensively vegetable cultivated areas in Sri Lanka

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