Nitrogen release dynamics and transformation of slow release fertiliser products and their effects on tea yield and quality

Wang, Han; Ma, Lei; Shi, Yuanzhi; Ruan, Jianyun; Kemmitt, Sarah

doi:10.1002/jsfa.3160

Cited by 58 publications

(25 citation statements)

References 14 publications

(15 reference statements)

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“…It also reported that DCD was better than neem cake. The nitrogen use efficiency was 29 % in uncoated fertilizer and 46 % in polyolefin coated fertilizer with DCD was applied as a slow release fertilizers; especially coated urea with DCD significantly increase the N use efficiency in tea [11]. DCD was able to inhibit the nitrification process during the decomposition of crop residues [12].…”

Section: Introductionmentioning

confidence: 99%

Nitrification Inhibition Potential of Brachiaria humidicola

Meena

Sachdev

Manjaiah

et al. 2014

Natl. Acad. Sci. Lett.

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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 %).

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Section: Introductionmentioning

confidence: 99%

Nitrification Inhibition Potential of Brachiaria humidicola

Meena

Sachdev

Manjaiah

et al. 2014

Natl. Acad. Sci. Lett.

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“…It could be argued that one of the reasons behind such a limitation is the lack of suitable methods to assess these fertilizers, as the evaluations conducted under laboratory conditions (Shaviv et al 2003;Liang and Liu 2006) do not take into account the fertilizer interaction with the soil and also the role of plant roots acting as a sink for nutrients. Although studies in the field have been able to demonstrate differences in N provision to plants between coated and soluble fertilizers (Fan et al 2004;Han et al 2008), the complexity of factors driving N availability in soils limits the extrapolation of the results. Therefore, pot-based studies arise as a suitable alternative to fertilizer industry and regulatory agencies to evaluate the efficiency of coating materials in controlling the nutrient supply to crop plants.…”

Section: Gl Mesquita Et Almentioning

confidence: 99%

A practical approach for assessing the efficiency of coated urea on controlling nitrogen availability

2017

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accumulation in shoots than UR-1x. However, in the third cycle, higher shoot N uptake and DM production was recorded in UR-4m than in UR-1x. Furthermore, fertilizer contribution for shoot N uptake in UR-4m plants was higher than those in UR-1x and UR-2m at the end of the experiment. Accordingly, consecutive growing cycles combined with forms of soluble UR application were able to characterize the pattern of N release from coated fertilizers, being, thus, a suitable method to evaluate the efficiency of such products. We argue that our practical approach could be used by the industry in fertilizer quality programs and to register fertilizer coating materials by regulatory agencies.

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“…Tea quality is strongly influenced by the leaf content of nitrogen (N) compounds (Lu et al 2011), such as free amino acids, polyphenols, catechins (Ning et al 2016), and caffeine (Ruan et al 2007;Wang et al 2012). Concentrations of these N compounds increase substantially in response to adequate N supply (Ruan et al 2010), and N fertilizers significantly increase both tea yield and quality (Han et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Efficient iron plaque formation on tea (Camellia sinensis) roots contributes to acidic stress tolerance

Zhang

Chen

et al. 2018

JIPB

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Tea plants grow in acidic soil, but to date, their intrinsic mechanisms of acidic stress tolerance have not been elucidated. Here, we assessed the tea plant response to growth on NH nutrient media having different pH and iron levels. When grown in standard NH nutrient solution (iron insufficient, 0.35 mg L Fe ), tea roots exhibited significantly lower nitrogen accumulation, plasma membrane H -ATPase activity, and protein levels; net H efflux was lower at pH 4.0 and 5.0 than at pH 6.0. Addition of 30 mg L Fe (iron sufficient, mimicking normal soil Fe concentrations) to the NH nutrient solution led to more efficient iron plaque formation on roots and increased root plasma membrane H -ATPase levels and activities at pH 4.0 and 5.0, compared to the pH 6.0 condition. Furthermore, plants grown at pH 4.0 and 5.0, with sufficient iron, exhibited significantly higher nitrogen accumulation than those grown at pH 6.0. Together, these results support the hypothesis that efficient iron plaque formation, on tea roots, is important for acidic stress tolerance. Furthermore, our findings establish that efficient iron plaque formation is linked to increased levels and activities of the tea root plasma membrane H -ATPase, under low pH conditions.

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Nitrogen release dynamics and transformation of slow release fertiliser products and their effects on tea yield and quality

Cited by 58 publications

References 14 publications

Nitrification Inhibition Potential of Brachiaria humidicola

Nitrification Inhibition Potential of Brachiaria humidicola

A practical approach for assessing the efficiency of coated urea on controlling nitrogen availability

Efficient iron plaque formation on tea (Camellia sinensis) roots contributes to acidic stress tolerance

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