Sustainable Intensification Of Agriculture Research Articles

Sustainable agricultural intensification practices and cost efficiency in smallholder maize farms: Evidence from Ethiopia

AbstractSustainable agricultural intensification (SAI) practices have been promoted in developing countries to improve farm productivity and environmental services. However, it is still unclear whether use of a combination of SAI practices has a significant influence on the cost efficiency of smallholder farms. This study investigates whether the cost efficiency of smallholder maize producers in Ethiopia depends on use of input‐augmenting and agronomic SAI practices. Stochastic cost frontier models that account for heterogeneity across farms are used for estimation. We find that the use of individual SAI practices increases cost while the combined use of the practices reduces it. The marginal effect on cost reduction is substantial when SAI practices are set at their sample maximum levels. Overall, the results demonstrate the benefit of using a combination of SAI practices in minimizing production cost while addressing the adverse effects of soil degradation and climate variability. To enhance food security, smallholder farm incomes and the sustainability of production in developing countries, policy programs should focus on promoting packages of input‐augmenting and agronomic SAI practices.

Sustainable Intensification of Agriculture in the Context of the COVID-19 Pandemic: Prospects for the Future

The COVID-19 pandemic is adversely impacting food and nutrition security and requires urgent attention from policymakers. Sustainable intensification of agriculture is one strategy that attempts to increase food production without adversely impacting the environment, by shifting from water-intensive crops to other climate-resistant and nutritious crops. This paper focuses on the Indian state of Andhra Pradesh by studying the impact of shifting 20% of the area under paddy and cotton cultivation to other crops like millets and pulses. Using FAO’s CROPWAT model, along with monsoon forecasts and detailed agricultural data, we simulate the crop water requirements across the study area. We simulate a business-as-usual base case and compare it to multiple crop diversification strategies using various parameters—food, calories, protein production, as well as groundwater and energy consumption. Results from this study indicate that reduced paddy cultivation decreases groundwater and energy consumption by around 9–10%, and a calorie deficit between 4 and 8%—making up this calorie deficit requires a 20–30% improvement in the yields of millets and pulses. We also propose policy interventions to incentivize the cultivation of nutritious and climate-resistant crops as a sustainable strategy towards strengthening food and nutrition security while lowering the environmental footprint of food production.

Assessment of rice yield gap under a changing climate in India

Abstract Climate change evokes future food security concerns and needs for sustainable intensification of agriculture. The explicit knowledge about crop yield gap at country level may help in identifying management strategies for sustainable agricultural production to meet future food demand. In this study, we assessed the rice yield gap under projected climate change scenario in India at 0.25° × 0.25° spatial resolution by using the Decision Support System for Agrotechnology Transfer (DSSAT) model. The simulated spatial yield results show that mean actual yield under rainfed conditions (Ya) will reduce from 2.13 t/ha in historical period 1981–2005 to 1.67 t/ha during the 2030s (2016–2040) and 2040s (2026–2050), respectively, under the RCP 8.5 scenario. On the other hand, mean rainfed yield gap shows no change (≈1.49 t/ha) in the future. Temporal analysis of yield indicates that Ya is expected to decrease in the considerably large portion of the study area (30–60%) under expected future climate conditions. As a result, yield gap is expected to either stagnate or increase in 50.6 and 48.7% of the study area during the two future periods, respectively. The research outcome indicates the need for identifying plausible best management strategies to reduce the yield gap under expected future climate conditions for sustainable rice production in India.

Understanding and informing decisions on Sustainable Agricultural Intensification in Sub-Saharan Africa

ABSTRACT Sustainable Agricultural Intensification (SAI) was initially defined as increasing agricultural production without adverse environmental impacts and without increasing the area under agriculture. Over time the concept has been broadened to integrate social, economic, and environmental components of sustainability, each of which covers multiple facets or indicators of performance. It is recognized however that it may not be possible to optimize all these aspects of sustainability simultaneously and that trade-offs between them are likely to occur, although synergies are also possible. There has been disagreement over how to achieve SAI, with some proposing that only an ‘agroecological’ intensification pathway delivers sustainability. Others take a broader perspective arguing that all aspects of ecological, genetic, and socio-economic intensification need to be considered, but then assessed in terms of the sustainability of the outcomes. A major concern is that intensification that focuses on agricultural technology can lead to inequitable outcomes for women and poorer households, while agroecological intensification building upon local capitals is generally considered more equitable. Understanding the potential outcomes and inherent trade-offs of different approaches requires interdisciplinary research, evidence and decision-making tools, some examples of which are presented in this Special Issue.

Gender- and youth-sensitive data collection tools to support decision making for inclusive sustainable agricultural intensification

ABSTRACT To achieve equitable sustainable agricultural intensification (SAI), it is essential to understand differential access and control over agricultural resources by women and youth, and to assess how intensification interacts with gendered and age-dependent relationships. Existing packages for assessing women’s empowerment in agriculture tend to be large-scale surveys that do not provide timely results, nor are they easily integrated into a gender-transformative process. This paper applies concepts from Kabeer on gender analysis and empowerment to evaluate promising tools available for assessing inequities in SAI and supporting a gender-transformative approach. We interviewed decision makers in Malawi and Ghana to understand their needs and practices for equityanalysis. We evaluated, adapted and tested tools to detect inequities from SAI. Our results demonstrate the suitability of tools to decision makers’ needs for ex-ante assessment and early detection of disparities. We synthesize information from the testing and adaptation of tools about the resources required, the equity issues they can reveal and their potential role in a gender-transformative approach. The use of the tools needs to be part of an inclusive and culturally specific process for identifying gaps and facilitating a more equitable sharing of SAI responsibilities and benefits through iterative cycles of action and learning.

Decoupling livestock and crop production at the household level in China

Animal manure used to be the major source of additional nutrients and crucial for maintaining soil fertility and crop yield in traditional farming systems. However, it is increasingly not recycled, wasting vital resources and damaging the environment. By using long-term (1986–2017) data from a rural household survey (>20,000 households) across China, here we show that the share of rural households with both crop planting and livestock raising (CPLR) has sharply declined from 71% in 1986 to only 12% in 2017. Compared with households with only crop planting, the CPLR households apply less synthetic fertilizer and more manure per cropland area. However, manure production in one-third of CPLR households has exceeded the nutrient requirement of crop growth on their croplands. Rebuilding the links between livestock and croplands at a regional scale thus provides vital opportunities for the sustainable intensification of agriculture in China. Recycling nutrient-rich manure helped fertilize traditional farms. This study finds a near 60% drop in the share of rural Chinese households raising livestock and planting crops, a link worth rebuilding regionally to intensify agriculture sustainably.

Global food self-sufficiency in the 21st century under sustainable intensification of agriculture

Meeting the increasing global demand for agricultural products without depleting the limited resources of the planet is a major challenge that humanity is facing. Most studies on global food security do not make projections past the year 2050, just as climate change and increasing demand for food are expected to intensify. Moreover, past studies do not account for the water sustainability limits of irrigation expansion to presently rainfed areas. Here we perform an integrated assessment that considers a range of factors affecting future food production and demand throughout the 21st century. We evaluate the self-sufficiency of 165 countries under sustainability, middle-of-the-road, and business-as-usual scenarios considering changes in diet, population, agricultural intensification, and climate. We find that under both the middle-of-the-road and business-as-usual trajectories global food self-sufficiency is likely to decline despite increased food production through sustainable agricultural intensification since projected food demand exceeds potential production. Contrarily, under a sustainability scenario, we estimate that there will be enough food production to feed the global population. However, most countries in Africa and the Middle East will continue to be heavily reliant on imports throughout the 21st century under all scenarios. These results highlight future hotspots of crop production deficits, reliance on food imports, and vulnerability to food supply shocks.

Environmental and socio-economic performance of different tillage systems in maize grain production: Application of Life Cycle Assessment and Multi-Criteria Decision Making

The growing need for additional production due to high global food demand should be supplied through sustainable intensification of agriculture. In Poland, conventional tillage with deep full ploughing is still the most common practice, however, it may harm the environment and natural resources. Therefore, this study aimed to evaluate the sustainability of no tillage (NT), reduced tillage (RT) and conventional tillage (CT) in grain maize monoculture based on economic, environmental, and social aspects. Based on the outcomes of long-term field experiments conducted at the Agricultural Experimental Station in Grabów (Mazowieckie Voivodship), life cycle assessment (LCA) and fuzzy analytic hierarchy process (FAHP) were applied to evaluate tillage systems and calculate the criteria weights. Results showed better performance for CT on economic and social criteria while NT and RT had better performances on environmental criteria. The final evaluation illustrated the greatest overall performance for CT followed by RT and NT. Findings emphasized that, in order to achieve a comprehensive view, it is necessary to study the impact of main criteria weights and annual yield variation conditions on the overall performance of alternatives. Sensitivity analysis was conducted combining five weights sets and two production scenarios conditions. The results showed that, except for the environmental criteria, in all other cases CT had the best performance. Moreover, it was illustrated that yield had a significant impact on the overall performance of the tillage systems. The results of final ranking introduced NT with the best performance in a year with the lowest level of grain yield, while on the contrary, under favorable conditions for maximum grain yield, CT was ranked first. According to the obtained results, it is concluded that expectations of climate change leading to increased yield variability may play an important role in the development of conservation tillage systems (RT and NT) in the studied area in Poland.

Improve Pasture or Feed Grain? Greenhouse Gas Emissions, Profitability, and Resource Use for Nelore Beef Cattle in Brazil's Cerrado and Amazon Biomes.

Simple SummaryDeforested areas in Brazil’s Amazon and Cerrado savannah have historically transitioned to pasture for grazing tropical beef cattle. Brazil’s projected growth in beef exports emphasizes the importance of sustainably intensifying Brazil’s cattle industry on existing agricultural land without increasing deforestation nor accelerating land conversion. We adapted a widely used simulation model for cattle, pasture, and crops to closely match two cooperating beef farms, one in the Cerrado and one in the Amazon. We then simulated the adoption of pasture fertilization, pasture re-seeding, and pasture-based grain supplementation of cattle by a model beef farm. These three sustainable agricultural intensification strategies were compared to extensive cattle grazing, the status quo in Brazil. Beef productivity and economic returns were greater for grain supplementation, followed by pasture fertilization and pasture re-seeding. Grain supplementation had the lowest greenhouse gas emissions, with less energy and nitrogen use compared to extensive grazing, as measured as a “footprint” for every unit of beef body weight produced. Pasture re-seeding and fertilization had lower greenhouse gas footprints compared to extensive; however, water and energy use and nitrogen losses were greater. Grain supplementation used more human edible livestock feed than other strategies, so pasture intensification could increase future human food availability.Economic development, international food and feed demand, and government policies have converted Brazil’s natural ecosystems into agricultural land. The Integrated Farm System Model (IFSM) was evaluated using production, economic, and weather data collected on two cooperating farms in the Legal Amazon and Cerrado biomes in the Midwest state of Mato Grosso, Brazil. Three sustainable agricultural intensification strategies, namely grain supplementation, pasture re-seeding, and pasture fertilization were simulated in IFSM with double the beef cattle stocking density compared to extensive grazing. Livestock dry matter consumption simulated in IFSM was similar for pasture grazing estimates and actual feed consumed by beef cattle on the two collaborating farms. Grain supplementation best balanced beef production and profitability with lower carbon footprint compared to extensive grazing, followed by pasture fertilization and pasture re-seeding. However, pasture re-seeding and fertilization had greater use of water and energy and more nitrogen losses. Human edible livestock feed use was greatest for grain supplementation compared to other modeled systems. While grain supplementation appears more favorable economically and environmentally, greater use of human edible livestock feed may compete with future human food needs. Pasture intensification had greater human edible feed conversion efficiency, but its greater natural resource use may be challenging.

Analysis of yield and economical performance in greenhouse tomato in Uruguay with a systemic approach

Knowledge about contributing factors to yield loss is essential for sustainable intensification of agriculture. However, promising ideas from crop scale research are not always successfully adopted by farmers. Further analysis are needed to understand the interactions between decision making at crop and farm level and the consequences for the performance of the farm system as a whole. This study aimed to: (1) identify strategies to reduce yield gaps in greenhouse tomato in south Uruguay; (2) analyze main factors affecting economic efficiency of tomato crop and their relation with farms’ characteristics, and (3) explore improvement trajectories through re-design processes at both crop and farm level focusing in: synergies and trade-offs between crop yield maximization and farming system improvement. Yield gap was explored by combining regional agronomic diagnosis and yield gap analysis. 110 tomato greenhouses within 23 farms during 2014/15 and 2015/16 were assessed. Scaling up was explored in five farms through co-innovation under ecological intensification framework. Yields ranged from 0.9 to 24.3 kg m-2 and yield gap was 10.7 kg m-2 or 44% relative to potential. Cumulated photosynthetic active radiation intercepted (PARINT) was the most correlated with yield. We analyzed two complementary ways of increasing yield: (1) modifying growth-defining factors to increase PARINT and (2) modifying growth-limiting and reducing factors responsible for the gap to attainable yield at a given level of PARINT. Economic efficiency variability among tomato crops was explained mainly by yield and sales prices, while farm type according to resource endowment was not highlighted. Considering the farm as a whole when re-designing more sustainable systems had higher economic impact than focusing only on the main crop. However, yield gap analysis of main crop inside a farming system re-design process allowed to prioritize problems at crop level and be precise to suggest crop management plans to overall systems improvements.

Sustainable agricultural intensification and gender-biased land tenure systems: an exploration and conceptualization of interactions

ABSTRACT How does sustainable agricultural intensification’s (SAI) tenet of increased productivity on the same area of land relate to prevailing gender-biased land tenure systems? How can one conceptualize the interactions between intensified land use and control over land, labour, crops and benefits – and how can equitable outcomes be facilitated? These questions (which have not yet received sufficient attention in SAI research) are explored in this study using a qualitative methodology and a gender-transformative approach. Semi-structured interviews and focus group discussions with a total of 248 respondents were conducted in matrilineal and patrilineal intensification contexts in Ghana and Malawi. We develop a conceptual framework that extends Kabeer’s institutional analysis to include gender implications of SAI. Selected cases reveal how farmers and key actors link land use intensification to existing land-related institutions with diverse outcomes. We conclude that SAI interventions should adopt gender-transformative approaches. These facilitate equitable outcomes by supporting consensus-based institutional changes and creating positive synergies between multiple scales.

System diversification and grazing management as resilience-enhancing agricultural practices: The case of crop-livestock integration

Managing for resilience in agriculture will be required to overcome future challenges such as growing food demand, climatic uncertainty, scarce raw materials and economic instability. Identifying resilience-enhancing practices is therefore fundamental for developing sustainable agroecosystems. We aimed to assess the resilience of two agricultural systems with different levels of diversification in southern Brazil: a specialized soybean (Glycine max) system and an integrated soybean-beef cattle system. We assessed the robustness and the adaptive capacity of these systems when facing climate hazards and price volatility. The study was based on a long-term trial that has been carried out since 2001, composed of an annual rotation of no-till soybean production during the summer and grazing of mixed black oat (Avena strigosa) and Italian ryegrass (Lolium multiflorum) pasture in the winter. Treatments consisted of four grazing intensities in the integrated crop-livestock system (ICLS), defined by sward heights: 10, 20, 30 and 40 cm plus an ungrazed control representing the specialized cropping system (CS). The experiment was carried out using a randomized complete block design with three replicates. We analysed system results over five years using two methods: i) a downside risk analysis to estimate the expected losses of yield and gross value added; and ii) the Ecological Network Analysis, which was applied to each treatment and year, for the assessment of the resilience of nitrogen (N-Ɍflow) and phosphorus (P-Ɍflow) flows. Both methods showed that co-located crop-livestock production in an ICLS was more resilient than the specialized soybean system and had improved nutrient cycling and resource-use efficiency. The effects of grazing management on system resilience depended on the output: beef yields were more stable under lower grazing intensities, but the risk of falling below a target economic threshold was inversely proportional to grazing intensity and null when the highest grazing intensity was adopted. The ecological network analysis did not reveal differences in resilience of nutrient flows among grazing management treatments. Our study suggests that Ɍflow (N or P) is a useful proxy for assessing the robustness and adaptability of agroecosystems. Our comprehensive resilience analysis of nutrient and economic flows provides evidence that system diversification through the integration of grazing animals into specialized cropping systems is a good strategy towards the sustainable intensification of agriculture. It would be relevant, however, to consider further studies comparing more complex system configurations and levels of diversification.

Supporting smallholders’ decision making: managing trade-offs and synergies for sustainable agricultural intensification

ABSTRACT Meeting multiple, often competing objectives when seeking to sustainably intensify their agricultural operations is a constant challenge for smallholder farmers in Sub-Saharan Africa. Trade-offs between social, economic and environmental goals at different time and spatial scales need to be reconciled, making best use of scarce resources. This study explored how different types of farm households in Northwest Ghana, Eastern Burkina Faso and Central Malawi make choices about resource allocation and farming strategies, and how they manage the trade-offs encountered. It used both quantitative (questionnaire survey) and qualitative (household case studies) methods to identify trade-offs experienced by farmers and to analyse trade-off management strategies used by them. The 10 main trade-offs identified across the 3 countries occurred across sustainability domains, across time, across spatial scales, across types of farmers or a combination of these. Famers were disincentivized from prioritizing long-term sustainability in their farming operation by resource constraints to meet multiple farming and livelihood objectives, mainstream agricultural policies encouraging short-term productivity gains and adoption-focused interventions, which disregard the diversity of farming households.

Participatory multicriteria assessment of maize cropping systems in the context of family farmers in the Brazilian Cerrado

ABSTRACT Conservation agriculture (CA) is recognized as a promising crop management strategy for sustainable agricultural intensification. The objective of this study was to evaluate CA cropping systems for rainfed maize as an alternative to the traditional tillage-based cropping systems (CT) in the context of family farms, using a multi-criteria model that represents the point of view of farmers. Farmers considered several aspects for evaluating the cropping systems, thatwere systematized in the model through five criteria (with sub-criteria): (a) costs; (b) yield; (c) labour; (d) human health and environment; and (e) production risks. CA did not differ from CT for the ‘costs’ criterion but was superior for the ‘yield’ and ‘labour’ criteria. In contrast, CT obtained better ratings for the criteria ‘human health and environment’ and ‘production risks’. Considering all criteria, CA was better appraised than CT. However, a new local policy measure that subsidizes the hiring of mechanized tillage services overturns this outcome, indicating the importance of exogenous factors. Overall, the participatory processes in building the model allowed us to better understand the reasons of adoption or non-adoption of CA by small-scale farmers in the tropics.

A gendered ecosystem services approach to identify novel and locally-relevant strategies for jointly improving food security, nutrition, and conservation in the Barotse Floodplain

ABSTRACT Multiple lines of evidence call for the use of locally-relevant strategies to guide and support sustainable agricultural intensification while improving development and conservation outcomes. The goal of this study was to identify the ecosystem services from natural and agricultural systems to achieve this aim in the Barotse Floodplain of Zambia. Our methodology utilized a gender-sensitive ecosystem services approach, whereby local knowledge from women and men was harnessed to understand which services and their sources are important. In addition, we identified the various constraints and options people encounter for developing sustainable and nutritious agriculture while achieving conservation outcomes. The results of our study indicate that the floodplain provides a broad range of ecosystem services, which are important for securing local livelihoods and wellbeing. The forests in the uplands and the grasslands in the plains are the primary sources of the 17 provisioning and regulating ecosystem services assessed. Nonetheless, both are often converted to agriculture due to their high soil fertility. We identified opportunities and challenges for sustainable agricultural intensification and development in areas with lower conservation concerns. We discussed the constraints and limitations for promoting sustainable and inclusive agriculture in those areas.

Estimating the global potential of water harvesting from successful case studies

Water harvesting has been widely applied in different social-ecological contexts, proving to be a valuable approach to sustainable intensification of agriculture. Global estimates of the potential of water harvesting are generally based on purely biophysical assessments and mostly neglect the socioeconomic dimension of agriculture. This neglect becomes a critical factor for the feasibility and effectiveness of policy and funding efforts to mainstream this practice. This study uses archetype analysis to systematically identify social-ecological regions worldwide based on >160 successful cases of local water harvesting implementation. We delineate six archetypal regions which capture the specific social-ecological conditions of the case studies. The archetypes cover 19% of current global croplands with hotspots in large portions of East Africa and Southeast Asia. We estimate that the adoption of water harvesting in these cropland areas can increase crop production up to 60–100% in Uganda, Burundi, Tanzania and India. The results of this study can complement conventional biophysical analysis on the potential of these practices and guide policy development at global and regional scales. The methodological approach can be also replicated at finer scales to guide the improvement of rainfed agricultural.

Adoption by adaptation: moving from Conservation Agriculture to conservation practices

ABSTRACT Conservation Agriculture (CA) is a Sustainable Agricultural Intensification strategy based on minimum soil disturbance, permanent soil coverage by living or dead biomass, and diversification of crop rotations. We reviewed the literature on benefits, trade-offs, adoption and adaptation of CA in sub-Saharan Africa (SSA). While CA can improve soils and sustain crop yields, benefits are inconsistent and there are trade-offs with crop residue use, weeds and insect pests, labour demands and short-term yield penalties. Adoption rates by smallholders in sub-Saharan Africa are generally low. We hypothesize that underlying adoption constraints are 1) the magnitude of transformation of management practices required from farmers moving to CA, 2) the multiple inherent trade-offs associated with CA practices and 3) the incompatibility of CA practices to local conditions. We suggest CA adoption in SSA could be improved by focusing the promotion of CA to environments where it best fits, or by facilitating smallholders’ adaptation of the practices of CA to respond to their conditions and constraints. We, therefore, propose to move from Conservation Agriculture to Conservation Practices by: (A) identifying and overcoming locally important CA trade-offs through adaptations and complementary practices, and (B) finding farm-specific optimal combinations of practices in terms of feasibility and benefits.

Limits of conservation agriculture to overcome low crop yields in sub-Saharan Africa

Conservation agriculture (CA) has become a dominant paradigm in scientific and policy thinking about the sustainable intensification of food production in sub-Saharan Africa. Yet claims that CA leads to increasing crop yields in African smallholder farming systems remain controversial. Through a meta-analysis of 933 observations from 16 different countries in sub-Saharan African studies, we show that average yields under CA are only slightly higher than those of conventional tillage systems (3.7% for six major crop species and 4.0% for maize). Larger yield responses for maize result from mulching and crop rotations/intercropping. When CA principles are implemented concomitantly, maize yield increases by 8.4%. The largest yield benefits from CA occur in combination with low rainfall and herbicides. We conclude that although CA may bring soil conservation benefits, it is not a technology for African smallholder farmers to overcome low crop productivity and food insecurity in the short term. Principles of conservation agriculture are widely promoted for sustainable agricultural intensification, but their effects on crop yields in sub-Saharan Africa are poorly understood. A meta-analysis covering 16 countries quantifies such effects and reveals the conditions under which they are maximized.

Syndromes of production in intercropping impact yield gains.

Intercropping, the simultaneous production of multiple crops on the same field, provides opportunities for the sustainable intensification of agriculture if it can provide a greater yield per unit land and fertilizer than sole crops. The worldwide absolute yield gain of intercropping as compared with sole crops has not been analysed. We therefore performed a global meta-analysis to quantify the effect of intercropping on the yield gain, exploring the effects of crop species combinations, temporal and spatial arrangements, and fertilizer input. We found that the absolute yield gains, compared with monocultures, were the greatest for mixtures of maize with short-grain cereals or legumes that had substantial temporal niche differentiation from maize, when grown with high nutrient inputs, and using multirow strips of each species. This approach, commonly practised in China, provided yield gains that were (in an absolute sense) about four times as large as those in another, low-input intercropping strategy, commonly practised outside China. The alternative intercropping strategy consisted of growing mixtures of short-stature crop species, often as full mixtures, with the same growing period and with low to moderate nutrient inputs. Both the low- and high-yield intercropping strategies saved 16-29% of the land and 19-36% of the fertilizer compared with monocultures grown under the same management as the intercrop. The two syndromes of production in intercropping uncovered by this meta-analysis show that intercropping offers opportunities for the sustainable intensification of both high- and low-input agriculture.

Managing soils and crops for sustainable agricultural intensification in coastal saline zones

AbstractSustainable agricultural intensification to ensure global food security requires increases in both crop yields and nitrogen (N) productivity. Together, these requirements represent a considerable challenge, especially in saline regions where the high soil sodium (Na+) content limits crop growth. An integrated soil and crop management system (ISCM) may be more successful than procedures aimed at improving only soil quality (ISM) or crop management (ICM), or current local farmers’ practice for achieving sustainable intensification in coastal saline zones. In this study, we tested different management alternatives for their ability to improve soil quality, agronomic feasibility, and affordability over four harvests in a 2‐yr wheat (Triticum aestivum L.)–maize (Zea mays L.) rotation system in China. The ISM treatment with added cow manure and flue gas desulfurization gypsum reduced both Na+ content and pH in the subsoil, thereby improving grain yields and N productivity. The ICM treatment (i.e., optimized plant density and N fertilizer management) also increased crop yields and N productivity. The ISCM treatment integrated procedures of the ICM and ISM treatments to achieve the best agronomic benefit by increasing yields of wheat and maize by 25.3 and 30.8%, respectively, and N productivity by 109 and 97.6%, respectively, while simultaneously improving soil quality by increasing both calcium ion (Ca2+) and soil organic carbon content, and decreasing Na+ and pH in the subsoil. All three management alternatives increased economic benefits, and the ICM treatment was most valuable over the short term.