Influence of Physicochemical Parameters of Neem (<i>Azadirachta indica</i> A Juss) Oils on Nitrification Inhibition in Soil

Kumar, Rajesh; Devakumar, C.; Sharma, Vandana; Kakkar, Garima; Kumar, Dinesh; Panneerselvam, P.

doi:10.1021/jf0632177

Cited by 42 publications

(24 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Acid value of about 4 mg KOH/g oil (FFA = 2%) was low compared to values of 7-82, 24, and 18.24 mg KOH/g oil given by (Erakhrumen, 2011;Kumar et al, 2007;Muthu et al, 2010), respectively for neem oils. Neem oils with high acid values are not very suitable for use in the production of biodiesel using chemical catalysis, as highly acidic oils have to go through a 2-step trans-esterification process to avoid the formation of soaps alongside the biodiesel whose separation contributes significantly to the cost of the biodiesel production process (Awolu and Layokun, 2013;SathyaSelvabala et al, 2010).…”

Section: Optimization Of Mae Of Oil From Neem Kernelsmentioning

confidence: 56%

Optimization of microwave assisted extraction parameters of neem ( Azadirachta indica A. Juss) oil using the Doehlert’s experimental design

Bup

Boldor

Astete

2015

Industrial Crops and Products

View full text Add to dashboard Cite

Section: Optimization Of Mae Of Oil From Neem Kernelsmentioning

confidence: 56%

Optimization of microwave assisted extraction parameters of neem ( Azadirachta indica A. Juss) oil using the Doehlert’s experimental design

Bup

Boldor

Astete

2015

Industrial Crops and Products

View full text Add to dashboard Cite

“…Neem (Azadirachta indica) products (Joseph and Prasad 1993;Kumar et al 2007) and plant oils (Erickson et al 2000;Patra et al 2006) have been shown to be as effective as synthetic inhibitors. However, difficulties with consistent delivery of the active ingredient in quantities that ensure the inhibitor is present in soils for long enough to provide sufficient control of nitrification are likely to restrict wide use.…”

Section: Production Of Nitrification Inhibitors By Plant?mentioning

confidence: 99%

Plant-based manipulation of nitrification in soil: a new approach to managing N loss?

Fillery

2007

Plant Soil

View full text Add to dashboard Cite

Much work has gone into the management of nitrification through applications of chemicals known to inhibit enzyme function in nitrifiers with indifferent outcomes when tested in the field. Much less attention has been focused on the capacity of plants to modify nitrification in situ. Subbarao and coworkers in a series of neat and elegant studies have confirmed that a tropical grass species, Brachiaria humidicola, produces chemicals that inhibit nitrification in soil. Critical to the work was the use of a Nitrosomonas europaea strain (nitrifying bacteria) that had been specifically constructed to produce bioluminescence due to the expression of ''luxAB' genes during nitrification. This application led to the development of an assay that enabled the suppression of nitrification to be assessed directly. They produce evidence that the production of chemicals by Brachiaria humidicola roots, described as biological nitrification inhibitors (BNIs), is under plant control. However, the triggers or molecular controls for BNI production have yet to be ascertained. Examination of the capacity of major crops to produce BNIs, including wheat (Triticum aestivum), barley (Hordeum vulgare), rice (Oryza sativa) and maize (Zea mays) indicate that these do not have this capacity. Work is needed on wild relatives of these crops and the major temperate grass species such as Lolium perenne to determine whether these have the capacity to produce BNIs with an aim to introduce this capacity into domesticated lines. The work of Subbarao et al. highlights how molecular biology can be used to introduce traits into micro-organisms responsible for key soil N transformations in a way that facilitates analysis of the interaction between plants and the soil environment so crucial to their growth and survival.

show abstract

“…and growth stages of crops [15]. The percent nitrification inhibition of neem oil which was ranging from 4 to 30.9 % [16]. Use of BNIs compared to synthetic nitrification inhibitors i.e.…”

Section: Introductionmentioning

confidence: 99%

Nitrification Inhibition Potential of Brachiaria humidicola

Meena

Sachdev

Manjaiah

et al. 2014

Natl. Acad. Sci. Lett.

View full text Add to dashboard Cite

An incubation experiment was conducted to determine the nitrification inhibition potential of Brachiaria humidicola (B. humidicola) and their effect on nitrification process. The pots soil was mixed 2 mg of nitrogen through ammonium sulphate. Seven treatments were evaluated viz. control, four root extracts of B. humidicola called as biological nitrification inhibitors (BNIs) (i.e., 70 % ethyl alcohol, 40 % ethyl alcohol, phosphate buffer solution and 2 M KCl salt solution extracts) and two standard chemical inhibitors i.e. dicyandiamide and neem oil coating. The amount of NH 4? -N was reduced 20.66-11.91 lg g -1 soil and NO 3 --N increased 28.89-31.18 lg g -1 soil from 14th to 22nd day time interval. Percent nitrification inhibition was more in BNIs (70 and 40 % alcohol extract) treated soils compared to plant based and synthetic nitrification inhibitors. The nitrification inhibition by B. humidicola also varied it was maximum (64.71 %) observed at 14th day over 22nd day (49.63 %).

show abstract

Influence of Physicochemical Parameters of Neem (Azadirachta indica A Juss) Oils on Nitrification Inhibition in Soil

Cited by 42 publications

References 3 publications

Optimization of microwave assisted extraction parameters of neem ( Azadirachta indica A. Juss) oil using the Doehlert’s experimental design

Optimization of microwave assisted extraction parameters of neem ( Azadirachta indica A. Juss) oil using the Doehlert’s experimental design

Plant-based manipulation of nitrification in soil: a new approach to managing N loss?

Nitrification Inhibition Potential of Brachiaria humidicola

Contact Info

Product

Resources

About