Nitrate leaching losses are lower from ryegrass/white clover forages containing plantain than from ryegrass/white clover forages under different irrigation

Carlton, Anna; Cameron, Keith; Di, Hong J.; Edwards, Grant; Clough, Tim J.

doi:10.1080/00288233.2018.1461659

Cited by 55 publications

(44 citation statements)

References 34 publications

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“…Dietz et al (2013) found that aucubin as well as soil incubated with plantain leaf material negatively affected soil mineralisation and nitrification. Carlton et al (2019) observed a lower abundance of NH + 4 -oxidising bacteria and a significant decrease of NO − 3 eutrophication if plantain was present in the forage in a ryegrass-clover sward on which urine-N was applied in patches at a rate of 7.0 g m −2 . Luo et al (2018) and Simon et al (2019) observed lower N 2 O emissions in the presence of plantain, after cattle urine applications on silt loam soils.…”

Section: Introductionmentioning

confidence: 92%

Can the presence of plantain (Plantago lanceolataL.) improve nitrogen cycling of dairy grassland systems on peat soils?

Pijlman

Berger

Lexmond

et al. 2019

New Zealand Journal of Agricultural Research

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Reactive nitrogen (N) losses, and in particular nitrous oxide losses, from dairy grasslands on peat soils are generally high as a result of relative high soil organic matter contents, potential N mineralisation rates and shallow groundwater levels. Effects of the inclusion of the temperate forage species plantain (Plantago lanceolata L.) (PL), which produces secondary compounds with biological nitrification inhibition capacity, on the fate of soil mineral N were studied in a combined mesocosm and field experiment. The experiments comprised four treatments differing in intentional herbage share of plantain versus perennial ryegrass (Lolium perenne L.) (100%PL, 66%PL, 33%PL and 0%PL). Potential nitrification in the mesocosm experiment was significantly lower at 100%PL versus 0%PL (p = 0.018), but soil nitrate concentrations were not. Nitrous oxide fluxes reduced by 39% (p = 0.021) in the presence of plantain in the field experiment, without an obvious link to the quantity of plantain. N use efficiency of plantain tended to increase with the quantity of plantain in the sward in the mesocosm experiment (p = 0.098), but not in the field experiment. Our results suggest that the presence of plantain can affect the fate of soil mineral N of dairy grasslands on peat soils. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 92%

Can the presence of plantain (Plantago lanceolataL.) improve nitrogen cycling of dairy grassland systems on peat soils?

Pijlman

Berger

Lexmond

et al. 2019

New Zealand Journal of Agricultural Research

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“…Terpenes can act as plant defence chemicals and in the example of aucubin, which is found in plantain species, it has been shown to be associated with reduced growth of fungal pathogen Diaporthe adunca and reduced feeding and growth of beet armyworm (Spodoptera exigua) (Biere et al 2004). The impact of aucubin-containing plantain has also been associated with N metabolism of microbia, reducing the rate of ammonia production in both soils (Carlton et al 2019;de Klein et al 2019) and rumen fluid (Navarrete et al 2016). In P. lanceolata the aucubin levels are typically greater than catalpol (Box et al 2019) though concentrations of the different metabolites vary greatly as they are dependent on season (Clemensen et al 2017;Box et al 2019), and level of herbivory and association with mychorriza (Wang et al 2015;Clemensen et al 2018).…”

Section: Plant Secondary Metabolitesmentioning

confidence: 99%

Can alternative forages substantially reduce N leaching? findings from a review and associated modelling

Bryant

Snow

Shorten

et al. 2019

New Zealand Journal of Agricultural Research

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Nitrogen (N) leaching losses from grazed pasture systems pose a risk to the environment with mitigation strategies urgently required to achieve regulatory limits. There has been increased interest in alternative forages to manipulate excretion of urinary-N of livestock. This review summarises research on key forage attributes which affect the pattern of urine-N excretion. The literature showed an opportunity to alter both N concentration and moisture concentration of forages to reduce urine patch N loading. Complementary mitigations of extending the grazing rotation and reducing fertiliser were tested in simulations in addition to a diuresis effect on nitrate leaching in pastoral dairy systems. Findings suggested that forage species alone could not substantially reduce (by more than 20%) nitrate leaching. Combining all forage, management and systems-based solutions led to the greatest reductions in nitrate leaching, 59 and 31% for Waikato and Canterbury. Nonetheless, reductions in N loss came at the expense of pasture productivity which will likely affect profitability and farmer adoption of this suite of solutions in the absence of other drivers. The role of plant secondary metabolites in microbial dynamics has implications on N recycling in soil and rumen environments and this was identified as an area for further research.

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“…Our study showed that the abundance of amoA genes was significantly lower in the rhizosphere of plantain plants grown with white clover than that in the rhizosphere of ryegrass plants grown with white clover following application of synthetic urine, indicating the Table 2 Abundance of bacterial amoA gene (log 10 copies g -1 soil dry weight) in rhizosphere and bulk soils of ryegrass/white clover and plantain/white clover after cattle urine application. Carlton et al (2019) compared the effect of plantain on the AOB community in soil and found a lower AOB community abundance in soil from a pasture mixture of ryegrass, white clover and plantain compared with just ryegrass/white clover pasture after application of cattle urine during summer. In contrast, Podolyan et al (2020) did not find differences in soil AOB abundance between plantain and ryegrass/white clover, which might be related to the sampling method utilised, as these authors did not collect rhizosphere soil.…”

Section: Discussionmentioning

confidence: 99%

Ammonia-oxidizing bacteria dynamics affected by plantain under synthetic cattle urine patches

Simon¹,

Klein²,

Gerard³

et al. 2020

Journal of NZ Grasslands

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Plantain has been suggested as a nitrous oxide (N2O) and nitrate (NO3-) leaching mitigation option as it may induce biological nitrification inhibition (BNI) via plantain root exudation, which affects the activity of ammonia-oxidizing bacteria. This preliminary study compared the abundance of the ammonia monooxygenase gene (amoA) in soils containing either plantain and white clover, or ryegrass and white clover. Plants were sown in pots and grown in a greenhouse. Two months after sowing, synthetic cattle urine was applied to half the pots, and rhizosphere and bulk soil samples were collected 30 and 90 days after urine application. The abundance of the amoA gene was measured using real time quantitative PCR. The abundance of amoA genes in rhizosphere soil around ryegrass plants and in bulk soil under ryegrass/white clover were higher in pots treated with urine than the no-urine controls. AmoA gene abundance in bulk soil under plantain/white clover was higher in pots treated with urine (P<0.05) but not in rhizosphere soil around plantain plants (P>0.05) compared with the control. Furthermore, amoA gene copy numbers in the rhizosphere soil around plantain plants were lower than for ryegrass plants (P<0.05). However, there was no difference in the abundance of amoA genes in bulk soil of either combination of plant species evaluated (P>0.05). The results suggest that, in the time frame of our experiment, plantain could induce a BNI effect in the rhizosphere soil but not in the bulk soil.

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Nitrate leaching losses are lower from ryegrass/white clover forages containing plantain than from ryegrass/white clover forages under different irrigation

Cited by 55 publications

References 34 publications

Can the presence of plantain (Plantago lanceolataL.) improve nitrogen cycling of dairy grassland systems on peat soils?

Can the presence of plantain (Plantago lanceolataL.) improve nitrogen cycling of dairy grassland systems on peat soils?

Can alternative forages substantially reduce N leaching? findings from a review and associated modelling

Ammonia-oxidizing bacteria dynamics affected by plantain under synthetic cattle urine patches

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