Long-Term Crop and Soil Response to Biosolids Applications in Dryland Wheat

Cogger, Craig; Bary, Andy I.; Kennedy, Ann C.; Fortuna, Ann‐Marie

doi:10.2134/jeq2013.05.0109

Cited by 48 publications

(37 citation statements)

References 35 publications

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“…Biosolids recycling completes the cycle of nutrients through soil-plant-human systems (Brown et al, 2010), and it is an effective mitigation strategy for reducing greenhouse gas emissions by substituting for synthetic fertilizers and increasing organic matter (Bogner et al, 2007). Land application of biosolids supplies a full complement of plant nutrients (Barbarick et al, 2010;Cogger et al, 2013), reducing the need for synthetic fertilizers that require fossil fuel inputs and generate greenhouse gas emissions during fertilizer manufacturing (Wood and Cowie, 2004). Land application of biosolids also fosters soil C and N accumulation, thereby reducing greenhouse gas emissions otherwise incurred during more common biosolids disposal pathways such as incineration and landfilling (Brown et al, 2010).…”

mentioning

confidence: 99%

Soil Carbon and Nitrogen Fraction Accumulation with Long‐Term Biosolids Applications

Pan¹,

Port²,

Xiao³

et al. 2017

Soil Science Soc of Amer J

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global sustainability depends on the recycling of organic wastes, containing carbon and plant nutrients, back into food production. Biosolids are capable of building total soil organic matter, but their ability to build stable organic C and n fractions is less well understood. The sequestration of stable soil C and replacement of energy-requiring commercial fertilizers both have implications for greenhouse gas mitigation. Our aim was to assess the effectiveness of biosolids amendments to store labile and stable soil C and n fractions while supplying crop n needs. Three rates of anaerobically digested biosolids were incorporated following wheat harvest every 4 yr in a wheat-fallow system over 20 yr, and compared to a no-fertilizer check and a standard commercial fertilizer treatment. Increases in total soil C and n correlated to cumulative application rates of total and acid-resistant, non-hydrolyzable (nH) C and n, with 91% of added biosolids C efficiently retained in soil. The soil accumulated light fraction (LF) C and n in biosolids treated plots, whereas the LF pools of the control plots decreased and LF pools in the commercial fertilizer plots stayed relatively constant. Total soil n correlated with cumulative biosolids n, with 35% of added biosolids n retained in the soil of which only 4% was stored in the soil nH n fraction. Anhydrous ammonia increased wheat yields by 27% over the 0-fertilizer check, without increasing soil n. Biosolids markedly elevated total, stable and LF soil C and n pools in semiarid conditions, while maintaining comparable wheat productivity to commercially fertilized wheat-fallow.

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mentioning

confidence: 99%

Soil Carbon and Nitrogen Fraction Accumulation with Long‐Term Biosolids Applications

Pan¹,

Port²,

Xiao³

et al. 2017

Soil Science Soc of Amer J

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“…The close proximity offers opportunities for processed manure and biosolids to be imported into this fallow zone, which will reduce fertilizer nutrient requirements. This would also build up the low SOM levels as has been demonstrated in a long-term manure trials at Pendleton, OR (Machado, 2011) and biosolids trials near Okanogan, WA (Cogger et al, 2013;Pan et al, 2017b).…”

Section: Crop-fallow Zonementioning

confidence: 89%

“…While biosolids applications generally raise grain protein when applied during the fallow year (Cogger et al, 2013), practical experience suggests that this is generally not great enough to negatively impact prices for soft wheats that can have high protein penalties. Likewise, the risk of N and P losses after biosolids applications is most often relatively low in regional dryland cereal systems, especially for one-time applications (Ippolito et al, 2007;Barbarick et al, 2012;Cogger et al, 2013). These anaerobically digested biosolids were later shown to also build stable and more labile soil organic C and N, while supplying sufficient crop N to a wheat-fallow system .…”

Section: Organic Resource Recyclingmentioning

confidence: 99%

Integrating Historic Agronomic and Policy Lessons with New Technologies to Drive Farmer Decisions for Farm and Climate: The Case of Inland Pacific Northwestern U.S.

Pan

Schillinger

Young

et al. 2017

Front. Environ. Sci.

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Climate-friendly best management practices for mitigating and adapting to climate change (cfBMPs) include changes in crop rotation, soil management and resource use. Determined largely by precipitation gradients, specific agroecological systems in the inland Pacific Northwestern U.S. (iPNW) feature different practices across the region. Historically, these farming systems have been economically productive, but at the cost of high soil erosion rates and organic matter depletion, making them win-lose situations. Agronomic, sociological, political and economic drivers all influence cropping system innovations. Integrated, holistic conservation systems also need to be identified to address climate change by integrating cfBMPs that provide win-win benefits for farmer and environment. We conclude that systems featuring short-term improvements in farm economics, market diversification, resource efficiency and soil health will be most readily adopted by farmers, thereby simultaneously addressing longer term challenges including climate change. Specific "win-win scenarios" are designed for different iPNW production zones delineated by water availability. The cfBMPs include reduced tillage and residue management, organic carbon (C) recycling, precision nitrogen (N) management and crop rotation diversification and intensification. Current plant breeding technologies have provided new cultivars of canola and pea that can diversify system agronomics Pan et al.Win-Win Scenarios for Farm and Climate and markets. These agronomic improvements require associated shifts in prescriptive, precision N and weed management. The integrated cfBMP systems we describe have the potential for reducing system-wide greenhouse gas (GHG) emissions by increasing soil C storage, N use efficiency (NUE) and by production of biofuels. Novel systems, even if they are economically competitive, can come with increased financial risk to producers, necessitating government support (e.g., subsidized crop insurance) to promote adoption. Other conservation-and climate change-targeted farm policies can also improve adoption. Ultimately, farmers must meet their economic and legacy goals to assure longer-term adoption of mature cfBMP for iPNW production systems.

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“…In comparison, on a per-acre basis, the use of manures, biosolids, composts, and biochar may have greater potential for increasing SOC in the Northwest (Lazzeri et al, 2010;Cogger et al, 2013;AgCC, 2016), providing climate benefits as well as agronomic benefits. In a field experiment in eastern Washington State, biosolids application to a dryland grain-fallow system increased total soil carbon from 0.94 to 1.64% over 20 years (Cogger et al, 2013), while cover cropping in an irrigated system every other year raised soil organic matter from 0.6 to 1.2% over 13 years (Lazzeri et al, 2010).…”

Section: Climate Mitigation Opportunitiesmentioning

confidence: 99%

“…In a field experiment in eastern Washington State, biosolids application to a dryland grain-fallow system increased total soil carbon from 0.94 to 1.64% over 20 years (Cogger et al, 2013), while cover cropping in an irrigated system every other year raised soil organic matter from 0.6 to 1.2% over 13 years (Lazzeri et al, 2010). Biochar (a carbonrich solid formed by pyrolysis of biomass) has garnered interest for a potential role in mitigating climate change (Woolf et al, 2010), and applications in corn in eastern Washington State have increased SOC (e.g., Bera et al, 2016), and raised pH Awale et al, 2017), an intriguing possibility given issues with soil acidification in some areas of the Northwest.…”

Section: Climate Mitigation Opportunitiesmentioning

confidence: 99%

Northwest U.S. Agriculture in a Changing Climate: Collaboratively Defined Research and Extension Priorities

Yorgey

Hall

Allen

et al. 2017

Front. Environ. Sci.

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In order for agricultural systems to successfully mitigate and adapt to climate change there is a need to coordinate and prioritize next steps for research and extension. This includes focusing on "win-win" management practices that simultaneously provide short-term benefits to farmers and improve the sustainability and resiliency of agricultural systems with respect to climate change. In the Northwest U.S., a collaborative process has been used to engage individuals spanning the research-practice continuum. This collaborative approach was utilized at a 2016 workshop titled "Agriculture in a Changing Climate," that included a broad range of participants including university faculty and students, crop and livestock producers, and individuals representing state, tribal and federal government agencies, industry, nonprofit organizations, and conservation districts. The Northwest U.S. encompasses a range of agro-ecological systems and diverse geographic and climatic contexts. Regional research and science communication efforts for climate change and agriculture have a strong history of engaging diverse stakeholders. These features of the Northwest U.S. provide a foundation for the collaborative research and extension prioritization presented here. We focus on identifying research and extension actions that can be taken over the next 5 years in four areas identified as important areas by conference organizers and participants: (1) cropping systems, (2) livestock systems, (3) decision support systems to support consideration of climate change in agricultural management decisions; and (4) partnerships among researchers and stakeholders. We couple insights from the workshop and a review of current literature to articulate current scientific understanding, and priorities recommended by workshop participants that target existing knowledge Yorgey et al.Priorities for U.S. Northwest Agriculture in a Changing Climate gaps, challenges, and opportunities. Priorities defined at the Agriculture in a Changing Climate workshop highlight the need for ongoing investment in interdisciplinary research integrating social, economic, and biophysical sciences, strategic collaborations, and knowledge sharing to develop actionable science that can support informed decision-making in the agriculture sector as the climate changes.

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Long-Term Crop and Soil Response to Biosolids Applications in Dryland Wheat

Cited by 48 publications

References 35 publications

Soil Carbon and Nitrogen Fraction Accumulation with Long‐Term Biosolids Applications

Soil Carbon and Nitrogen Fraction Accumulation with Long‐Term Biosolids Applications

Integrating Historic Agronomic and Policy Lessons with New Technologies to Drive Farmer Decisions for Farm and Climate: The Case of Inland Pacific Northwestern U.S.

Northwest U.S. Agriculture in a Changing Climate: Collaboratively Defined Research and Extension Priorities

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