The potential of using alternative pastures, forage crops and gibberellic acid to mitigate nitrous oxide emissions

Di, Hong J.; Cameron, K. C.; Podolyan, Andriy; Edwards, G. R.; Klein, Cecile A. M. de; Dynes, Robyn; Woods, Roshean R.

doi:10.1007/s11368-016-1442-1

Cited by 29 publications

(11 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, 40% of the milking platform in the ‘improved(LOW)’ system consisted of diverse pasture containing chicory, plantain, ryegrass, and clover, with non-lactating cows wintered on forage kale and oat silage. Although the diverse pasture was modelled to produce lower N 2 O EF 3 values for deposited urine [30], the emission intensities associated with total N 2 O loss from dung and urine did not differ between the two systems (Table 4). This was partly due to the ‘improved(LOW)’ system including kale in the winter period, which had a higher EF 3 value than the fodder beet crop grazed in the ‘current’ and ‘improved(HIGH)’ systems.…”

Section: Resultsmentioning

confidence: 99%

“…In brief, this methodology uses estimates of dry matter intake (DMI), N inputs, and N leaching losses, in combination with CH 4 and N 2 O emission factors (EF). In this study a combination of NZAI emission factor values and CH 4 and N 2 O emissions factors were used that were measured for key components of the milking platform or the wintering period for each system [30,31,32]. We used these targeted measurements to provide us with emission factor results for key components in the farmlets that we otherwise would not able to assess as the NZAI emission factors are not sufficiently disaggregated.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

The Effects of System Changes in Grazed Dairy Farmlet Trials on Greenhouse Gas Emissions

Weerden

Beukes

Klein

et al. 2018

Animals

Self Cite

View full text Add to dashboard Cite

Simple SummaryDairy farm system practices aimed at reducing nitrate leaching can also reduce emissions of the greenhouse gases methane and nitrous oxide. A study comparing ‘current’ and ‘improved’ grazed dairy system practices showed that ‘improved’ systems generally produced lower greenhouse gas emissions while milk production was maintained. The amount of feed eaten per hectare was the key driver of total greenhouse gas emissions per area, with ‘improved’ systems generally exhibiting lower total enteric methane and less N flowing through the herd.AbstractAn important challenge facing the New Zealand (NZ) dairy industry is development of production systems that can maintain or increase production and profitability, while reducing impacts on receiving environments including water and air. Using research ‘farmlets’ in Waikato, Canterbury, and Otago (32–200 animals per herd), we assessed if system changes aimed at reducing nitrate leaching can also reduce total greenhouse gas (GHG) emissions (methane and nitrous oxide) and emissions intensity (kg GHG per unit of product) by comparing current and potential ‘improved’ dairy systems. Annual average GHG emissions for each system were estimated for three or four years using calculations based on the New Zealand Agricultural Inventory Methodology, but included key farmlet-specific emission factors determined from regional experiments. Total annual GHG footprints ranged between 10,800 kg and 20,600 kg CO2e/ha, with emissions strongly related to the amount of feed eaten. Methane (CH4) represented 75% to 84% of the total GHG footprint across all modelled systems, with enteric CH4 from lactating cows grazing pasture being the major source. Excreta deposition onto paddocks was the largest source of nitrous oxide (N2O) emissions, representing 7–12% of the total GHG footprint for all systems. When total emissions were represented on an intensity basis, ‘improved’ systems are predicted to generally result in lower emissions intensity. The ‘improved’ systems had lower GHG footprints than the ‘current’ system, except for one of the ‘improved’ systems in Canterbury, which had a higher stocking rate. The lower feed supplies and associated lower stocking rates of the ‘improved’ systems were the key drivers of lower total GHG emissions in all three regions. ‘Improved’ systems designed to reduced N leaching generally also reduced GHG emissions.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

The Effects of System Changes in Grazed Dairy Farmlet Trials on Greenhouse Gas Emissions

Weerden

Beukes

Klein

et al. 2018

Animals

Self Cite

View full text Add to dashboard Cite

show abstract

“…There are currently no studies used by the IPCC to refine the EF 3PRP that use emissions reported from grazed herbs such as chicory. Although some studies did not report sward composition [181][182][183] , calculations were made from predominantly grass swards [184][185][186][187][188][189][190][191][192] , grass-clover [144,186,[193][194][195][196][197][198] or forage crops (e.g., barley, lucerne, or brassicas such as rape, Brassica napus, or kale, Brassica oleracea var. sabellica) [186,194,199] .…”

Section: Urine-patch N 2 O Emissionsmentioning

confidence: 99%

Agronomic and Environmental Benefits of Reintroducing Herb- And Legume-Rich Multispecies Leys Into Arable Rotations: A Review

2022

Front. Agr. Sci. Eng.

View full text Add to dashboard Cite

HIGHLIGHTS• Arable-ley rotations can alleviate soil degradation and erosion. • Multispecies leys can improve livestock health and reduce greenhouse gas emissions. • Ley botanical composition is crucial for determining benefits. • Lack of livestock infrastructure in arable areas may prevent arable-ley uptake. • Long-term (10-25 years) research is needed to facilitate evidence-based decisions.

show abstract

“…Although consistent observation of BNI is still lacking, the inclusion of pastures and forages that exhibit BNI potential in pastoral agricultural systems is being considered as a useful tool for reducing N 2 O emissions (Di et al, 2016; Gardiner et al, 2016; Balvert and Luo, 2017; Luo et al, 2018). In New Zealand pastoral agriculture, diverse pastures and forages are also being increasingly used for additional benefits such as drought tolerance or to meet feed deficits in winter or summer (Hoogendoorn et al, 2016).…”

mentioning

confidence: 99%

Can Incorporating Brassica Tissues into Soil Reduce Nitrification Rates and Nitrous Oxide Emissions?

2018

View full text Add to dashboard Cite

New Zealand agriculture is composed predominantly of pastoral grazing systems; however, forage crops have been increasingly used to supplement the diet of grazing animals. Excreta from grazing animals has been identified as a main contributor of N2O emissions. Some forage crops, such as brassicas (Brassica spp.), contain secondary metabolites that have been identified to inhibit soil N cycling processes, and nitrification in particular. Our objective was to determine if secondary metabolites released from brassica tissues inhibited nitrification and reduced N2O emissions when incorporated into soil, which was amended with a large amount of urea N (such as derived from urine patches deposited during grazing). Three brassica tissues (kale [Brassica oleracea L.], turnip [Brassica rapa L.] bulb, and turnip leaf and stem) and ryegrass (Lolium perenne L.) tissue were incorporated into soil with and without urea solution, and N2O, NO3−, and NH4+ were measured during a 52‐d incubation. All brassica tissues reduced urea‐derived N2O emissions relative to ryegrass tissues when incorporated into soil. According to the mineral N and microbial community data, this reduction, however, could not be attributed to inhibition of nitrification. Although there was less N2O from urea in the brassica treatments, total N2O emissions increased after incorporation of all tissue residues into soil, so this tradeoff must be explored if brassica tissues are to be considered as a tool for N2O reduction. Core Ideas Brassicas have been postulated to inhibit nitrification and N2O emissions. Incorporating brassica tissues into soil reduced N2O emissions from added urea. There was no evidence that tissue incorporation inhibited nitrification. However, addition of ryegrass and brassica tissues increased total N2O emissions. N2O emission tradeoffs between tissue inputs and inhibition need to be explored.

show abstract

The potential of using alternative pastures, forage crops and gibberellic acid to mitigate nitrous oxide emissions

Cited by 29 publications

References 25 publications

The Effects of System Changes in Grazed Dairy Farmlet Trials on Greenhouse Gas Emissions

The Effects of System Changes in Grazed Dairy Farmlet Trials on Greenhouse Gas Emissions

Agronomic and Environmental Benefits of Reintroducing Herb- And Legume-Rich Multispecies Leys Into Arable Rotations: A Review

Can Incorporating Brassica Tissues into Soil Reduce Nitrification Rates and Nitrous Oxide Emissions?

Contact Info

Product

Resources

About