Role of organic amendment application on greenhouse gas emission from soil

The Science of The Total Environment, Год журнала: 2013, Номер 465, С. 72 - 96

Опубликована: Фев. 19, 2013

Язык: Английский

---

Prospects of improving efficiency of fertiliser nitrogen in Australian agriculture: a review of enhanced efficiency fertilisers

Soil Research, Год журнала: 2008, Номер 46(4), С. 289 - 289

Опубликована: Янв. 1, 2008

Fertiliser nitrogen use in Australia has increased from 35 Gg N 1961 to 972 2002, and most of the is used for growing cereals. However, not efficiently, wheat plants, example, assimilated only 41% applied. This review confirms that efficiency fertiliser can be improved through management practices which increase crop’s ability compete with loss processes. results suggest alone will prevent all losses (e.g. by denitrification), it may necessary enhanced fertilisers, such as controlled release products, urease nitrification inhibitors, obtain a marked improvement efficiency. Some these products inhibitors) when Australian agriculture have yield or reduced irrigated wheat, maize cotton, flooded rice, but information concerning fertilisers reduce environment come other countries. The potential role various agricultural industries contamination discussed.

Язык: Английский

---

Efficiency of two nitrification inhibitors (dicyandiamide and 3, 4-dimethypyrazole phosphate) on soil nitrogen transformations and plant productivity: a meta-analysis

Scientific Reports, Год журнала: 2016, Номер 6(1)

Опубликована: Фев. 23, 2016

Abstract Dicyandiamide (DCD) and 3, 4-dimethypyrazole phosphate (DMPP) are often claimed to be efficient in regulating soil N transformations influencing plant productivity, but the difference of their performances across field sites is less clear. Here we applied a meta-analysis approach compare effectiveness DCD DMPP trials. Our results showed that were equally effective altering inorganic content, dissolve (DIN) leaching nitrous oxide (N 2 O) emissions. was more than on increasing productivity. An increase crop yield by generally only observed alkaline soil. The cost benefit analysis (CBA) applying fertilizer with produced additional revenues $109.49 ha −1 yr for maize farms, equivalent 6.02% grain revenues. In comparisons, application monetary $15.67 . findings had an advantage bringing net over DMPP. But this may weakened higher toxicity especially after continuous application. Alternatively, option related achieved through reducing purchasing products.

Язык: Английский

---

Development of emission factors and efficiency of two nitrification inhibitors, DCD and DMPP

Agriculture Ecosystems & Environment, Год журнала: 2015, Номер 216, С. 1 - 8

Опубликована: Окт. 6, 2015

Язык: Английский

---

Global evaluation of inhibitor impacts on ammonia and nitrous oxide emissions from agricultural soils: A meta‐analysis

Global Change Biology, Год журнала: 2022, Номер 28(17), С. 5121 - 5141

Опубликована: Июнь 9, 2022

Inhibitors are widely considered an efficient tool for reducing nitrogen (N) loss and improving N use efficiency, but their effectiveness is highly variable across agroecosystems. In this study, we synthesized 182 studies (222 sites) worldwide to evaluate the impacts of inhibitors (urease [UI], nitrification [NI] combined inhibitors) on crop yields gaseous (ammonia [NH3 ] nitrous oxide [N2 O] emissions) explored responses different management environmental factors including inhibitor application timing, fertilization regime, cropping system, water management, soil properties climatic conditions using subgroup meta-analysis, meta-regression multivariate analyses. The UI were most effective in enhancing (by 5%) NH3 volatilization 51%), whereas NI at N2 O emissions 49%). mitigates increases especially high -N scenarios, would minimize net resultant low scenarios. Alternatively, enables producers balance production conservation goals without pollution tradeoffs. efficacy decreasing was dependent upon practices. Notably, both analyses suggest that provide a greater opportunity fertilizer inputs high-N-surplus systems presumably favor yield enhancement under deficiency situations. pursuit improved understanding interactions between plant-soil-climate-management types should continue optimize losses while increasing productivity.

Язык: Английский

---

Reducing NH3, N2O and % MathType!Translator!2!1!AMS LaTeX.tdl!TeX -- AMS-LaTeX!% MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaeOtaiaab+% eadaqhaaWcbaacbaGaa83maaqaaiabgkHiTaaaaaa!3967! $${\text{NO}}_3^ - $$ –N losses from a pasture soil with urease or …

Biology and Fertility of Soils, Год журнала: 2007, Номер 44(5), С. 693 - 705

Опубликована: Ноя. 21, 2007

Язык: Английский

---

Efficiency of nitrification inhibitor DMPP to reduce nitrous oxide emissions under different temperature and moisture conditions

Soil Biology and Biochemistry, Год журнала: 2012, Номер 53, С. 82 - 89

Опубликована: Май 22, 2012

Язык: Английский

---

Effects of nitrification inhibitors (DCD and DMPP) on nitrous oxide emission, crop yield and nitrogen uptake in a wheat–maize cropping system

Biogeosciences, Год журнала: 2013, Номер 10(4), С. 2427 - 2437

Опубликована: Апрель 11, 2013

Abstract. The application of nitrification inhibitors together with ammonium-based fertilizers is proposed as a potent method to decrease nitrous oxide (N2O) emission while promoting crop yield and nitrogen use efficiency in fertilized agricultural fields. To evaluate the effects inhibitors, we conducted year-round measurements N2O fluxes, yield, aboveground biomass, plant carbon contents, soil inorganic dissolved organic contents main environmental factors for urea (U), &amp;plus; dicyandiamide (DCD) 3,4-dimethylpyrazol phosphate (DMPP) treatments wheat–maize rotation field. cumulative emissions were calculated be 4.49 &amp;pm; 0.21, 2.93 0.06 2.78 0.16 kg N ha−1 yr−1 U, DCD DMPP treatments, respectively. Therefore, significantly decreased annual by 35% 38%, respectively (p < 0.01). variations temperature, moisture content regulated seasonal fluctuation emissions. When presented clearly temporal variations, high-frequency or optimized sampling schedule intermittent would likely provide more accurate estimations treatment effect. increased 0.01); shifted form from nitrate ammonium; tended increase content, biomass uptake plant. results demonstrate roles play enhancing reducing cropping system.

Язык: Английский

---

Contribution of N₂O to the greenhouse gas balance of first‐generation biofuels

Global Change Biology, Год журнала: 2008, Номер 15(1), С. 1 - 23

Опубликована: Ноя. 19, 2008

Abstract In this study, we analyze the impact of fertilizer‐ and manure‐induced N 2 O emissions due to energy crop production on reduction greenhouse gas (GHG) when conventional transportation fuels are replaced by first‐generation biofuels (also taking account other GHG during entire life cycle). We calculate nitrous oxide (N O) applying a statistical model that uses spatial data climate soil. For land use is assumed be (the ‘reference land‐use system’), explore variety options, most important which cropland for food production, grassland, natural vegetation. Calculations also done in case fully additional thus no reference considered. The results combined with derived from existing studies, resulting total emission potentials major compared fuels. show can have an overall balance biofuels, though there large uncertainties. ones those not related use. Ethanol produced sugar cane beet relatively robust savers: these change −103% −60% (sugar cane) −58% −17% beet), depending system diesel palm fruit constant substantial −75% −39%. corn wheat ethanol, figures −38% 11% −107% 53%, respectively. Rapeseed changes −81% 72% soybean −111% 44%. Optimized management, involves state‐of‐the‐art agricultural technologies optimized fertilization regime nitrification inhibitors, reduce substantially up −135 percent points (pp) management. However, uncertainties non‐land‐use large; they between −152 87 pp.

Язык: Английский

---

Implications of climate change for grassland in Europe: impacts, adaptations and mitigation options: a review

Grass and Forage Science, Год журнала: 2007, Номер 62(2), С. 118 - 126

Опубликована: Июнь 1, 2007

Summary Climate change associated with greenhouse gas (GHG) emissions may have important implications for Europe's grasslands. Projected scenarios indicate that increased temperatures and CO 2 concentrations the potential to increase herbage growth favour legumes more than grasses, but changes in seasonal precipitation would reduce these benefits particularly areas low summer rainfall. Further grasslands arise from frequency of droughts, storms other extreme events. Potential farm‐scale adaptive responses climate are identified. Grassland agriculture also contributes GHG emissions, methane nitrous oxide, management grassland affects net carbon balances sequestration. Management options identified mitigating grassland's contribution which need be developed a holistic way considers pressures.

Язык: Английский

---