Ocena emisji GHG za pomocą śladu węglowego w intensywnej produkcji rolniczej, na przykładzie rzepaku ozimego

Currently, a major challenge for the agriculture sector is the reduction of greenhouse gas (GHG) emissions in order to mitigate the effects of climate change. There is a need to accurately identify the sources of emissions and to promote agricultural practices that would contribute to the reduction of emissions in all chains of crop production. To carry out objective comparisons and choose the best technological solutions according to an emissivity criterion there is a need for the detail quantitative assessment of GHG emissions. The study shows an assessment of GHG emissions in crop production using the carbon footprint (CF). The share of technological operations in CF formation was characterized based on the example of winter oilseed rape. The results indicate that the process of fertilization is of the greatest importance in the CF development. The impact of other remaining processes on the CF is several times smaller. The main hot-spots in GHG emissions due to mineral fertilization are associated with direct and indirect GHG emissions from the fields. Emissions from the production of fertilizers are the second source of emissions from the fertilization process, following GHG emissions from the fields. Changes in agricultural practices by increasing the efficiency of nitrogen fertilization and the use of fertilizers with low emission factors make it possible to reduce GHG emissions at present, and thereby contribute to the CF reduction of crop products.

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Twenty-First-Century Climate Change Hot Spots in the Light of a Weakening Sun

Journal of Climate ◽

10.1175/jcli-d-19-0059.1 ◽

2020 ◽

Vol 33 (9) ◽

pp. 3431-3447

Author(s):

Tobias Spiegl ◽

Ulrike Langematz

Keyword(s):

Climate Change ◽

Hot Spots ◽

Climate Model ◽

Hot Spot ◽

Ghg Emissions ◽

Arctic Sea Ice ◽

First Century ◽

Vulnerability To Climate Change ◽

Twenty First Century ◽

The Impact

AbstractSatellite measurements over the last three decades show a gradual decrease in solar output, which can be indicative as a precursor to a modern grand solar minimum (GSM). Using a chemistry–climate model, this study investigates the potential of two GSM scenarios with different magnitude to counteract the climate change by projected anthropogenic greenhouse gas (GHG) emissions through the twenty-first century. To identify regions showing enhanced vulnerability to climate change (hot spots) and to estimate their response to a possible modern GSM, a multidimensional metric is applied that accounts for—in addition to changes in mean quantities—seasonal changes in the variability and occurrence of extreme events. We find that a future GSM in the middle of the twenty-first century would temporarily mitigate the global mean impact of anthropogenic climate change by 10%–23% depending on the GSM scenario. A future GSM would, however, not be able to stop anthropogenic global warming. For the GHG-only scenario, our hot-spot analysis suggests that the midlatitudes show a response to rising GHGs below global average, while in the tropics, climate change hot spots with more frequent extreme hot seasons will develop during the twenty-first century. A GSM would reduce the climate change warming in all regions. The GHG-induced warming in Arctic winter would be dampened in a GSM due to the impact of reduced solar irradiance on Arctic sea ice. However, even an extreme GSM could only mitigate a fraction of the tropical hot-spot pattern (up to 24%) in the long term.

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Smallholder African farms in western Kenya have limited greenhouse gas fluxes

Biogeosciences Discussions ◽

10.5194/bgd-12-15301-2015 ◽

2015 ◽

Vol 12 (18) ◽

pp. 15301-15336 ◽

Cited By ~ 3

Author(s):

D. E. Pelster ◽

M. C. Rufino ◽

T. Rosenstock ◽

J. Mango ◽

G. Saiz ◽

...

Keyword(s):

Greenhouse Gas ◽

Crop Production ◽

Crop Yields ◽

N Uptake ◽

Ghg Emissions ◽

Sub Saharan Africa ◽

N2o Emissions ◽

Vegetation Types ◽

Western Kenya ◽

The Impact

Abstract. Few field studies examine greenhouse gas (GHG) emissions from African agricultural systems resulting in high uncertainty for national inventories. We provide here the most comprehensive study in Africa to date, examining annual CO2, CH4 and N2O emissions from 59 plots, across different vegetation types, field types and land classes in western Kenya. The study area consists of a lowland area (approximately 1200 m a.s.l.) rising approximately 600 m to a highland plateau. Cumulative annual fluxes ranged from 2.8 to 15.0 Mg CO2-C ha−1, −6.0 to 2.4 kg CH4-C ha−1 and −0.1 to 1.8 kg N2O-N ha−1. Management intensity of the plots did not result in differences in annual fluxes for the GHGs measured (P = 0.46, 0.67 and 0.14 for CO2, N2O and CH4 respectively). The similar emissions were likely related to low fertilizer input rates (≤ 20 kg ha−1). Grazing plots had the highest CO2 fluxes (P = 0.005); treed plots were a larger CH4 sink than grazing plots (P = 0.05); while N2O emissions were similar across vegetation types (P = 0.59). This case study is likely representative for low fertilizer input, smallholder systems across sub-Saharan Africa, providing critical data for estimating regional or continental GHG inventories. Low crop yields, likely due to low inputs, resulted in high (up to 67 g N2O-N kg−1 aboveground N uptake) yield-scaled emissions. Improving crop production through intensification of agricultural production (i.e. water and nutrient management) may be an important tool to mitigate the impact of African agriculture on climate change.

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Soil Management Practices to Mitigate Nitrous Oxide Emissions and Inform Emission Factors in Arid Irrigated Specialty Crop Systems

Soil Systems ◽

10.3390/soilsystems3040076 ◽

2019 ◽

Vol 3 (4) ◽

pp. 76

Author(s):

Xia Zhu-Barker ◽

Mark Easter ◽

Amy Swan ◽

Mary Carlson ◽

Lucas Thompson ◽

...

Keyword(s):

Nitrous Oxide ◽

Crop Production ◽

Management Practices ◽

Ghg Emissions ◽

Soil Management ◽

Emission Factors ◽

Nitrous Oxide Emissions ◽

Specialty Crops ◽

Specialty Crop ◽

The Impact

Greenhouse gas (GHG) emissions from arid irrigated agricultural soil in California have been predicted to represent 8% of the state’s total GHG emissions. Although specialty crops compose the majority of the state’s crops in both economic value and land area, the portion of GHG emissions contributed by them is still highly uncertain. Current and emerging soil management practices affect the mitigation of those emissions. Herein, we review the scientific literature on the impact of soil management practices in California specialty crop systems on GHG nitrous oxide emissions. As such studies from most major specialty crop systems in California are limited, we focus on two annual and two perennial crops with the most data from the state: tomato, lettuce, wine grapes and almond. Nitrous oxide emission factors were developed and compared to Intergovernmental Panel on Climate Change (IPCC) emission factors, and state-wide emissions for these four crops were calculated for specific soil management practices. Dependent on crop systems and specific management practices, the emission factors developed in this study were either higher, lower or comparable to IPCC emission factors. Uncertainties caused by low gas sampling frequency in these studies were identified and discussed. These uncertainties can be remediated by robust and standardized estimates of nitrous oxide emissions from changes in soil management practices in California specialty crop systems. Promising practices to reduce nitrous oxide emissions and meet crop production goals, pertinent gaps in knowledge on this topic and limitations of this approach are discussed.

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Impact of Apoidea (Hymenoptera) on the World’s Food Production and Diets

Annals of the Entomological Society of America ◽

10.1093/aesa/saaa016 ◽

2020 ◽

Author(s):

Israel Lorenzo-Felipe ◽

Carlos A Blanco ◽

Miguel Corona

Keyword(s):

Crop Production ◽

Agricultural Practices ◽

State Level ◽

Human Consumption ◽

Agricultural Crops ◽

Wasp Species ◽

The World ◽

Food And Feed ◽

Using Data ◽

The Impact

Abstract Bees and some wasp species of the superfamily Apoidea pollinate most of the crops used for food and feed, producing different impacts on agricultural production. Despite the considerable importance of Apoidea, the relevance of this group’s impact on global crop production and human diets is controversial. To measure the pollination effect of these insects on crop production, factors such as the myriad of agricultural practices, different crop varieties, fluctuating pollinators’ densities, constantly changing environmental conditions, and demands for food items in a diverse diets must be considered. An ‘Apoidea impact factor’ (AIF), a value calculated taking into consideration the effect of this superfamily on enhancing crop production through pollination, the diversity of crops in a given area, the area planted by specific crops, and agricultural output, was calculated for 176 agricultural crops. Consistently with previous estimations, our results show that Apoidea have a direct impact on 66% of the 128 most important agricultural crops consumed in the world. However, the analysis of the impact of Apoidea on global production and human consumption revealed a different perspective: Apoidea pollination affects only 16% of the total tonnage output, 14% of the cultivated area, and 9% of the kilocalories consumed. Because 25 of the most cultivated crops in the world do not require, or are slightly affected by Apoidea pollination, and these plants grow in 84% of the world’s cropland, constituting 50% of the world’s diet, and 89% of the kilocalories consumed by peoples around of the world, the AIF at the world level is reduced to 11% of food consumed, and 6% of the kilocalories. The AIF, when applied to a small geographical scale, for example, the municipality or county level rather than country or state level, becomes more useful identifying areas where bees and wasps have greater impact in agriculture. In this report, we update the widely popular quote ‘One out of every three bites of food we eat is a result of pollinators like honey bees’ to a more accurate one: ‘nearly 5% of the food we eat, and about 10% of the calories we burn have a direct relationship with Apoidea pollination’. This new estimate does not diminish the need for pollinators for many of the world’s most nutritious foods, but merely suggests that these foods do not provide an extensive part of the human diet. The AIF can be used to identify specific areas where these pollinators have greater impact and direct conservation efforts directly into them. This approach can serve as a better estimate of the role of these pollinators in our food, using data-driven arguments.

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POTENTIAL IMPACT OF THE IMPLEMENTATION OF THE NEW GREEN DEAL IN THE FIELD OF MINERAL FERTILIZATION ON THE YIELD OF MAIN AGRICULTURAL CROPS

Annals of the Polish Association of Agricultural and Agribusiness Economists ◽

10.5604/01.3001.0014.9098 ◽

2021 ◽

Vol XXIII (2) ◽

pp. 87-95

Author(s):

Mariusz Matyka

Keyword(s):

Crop Production ◽

Current Trend ◽

Mineral Fertilizers ◽

Production Potential ◽

Upward Trend ◽

Mineral Fertilization ◽

Environmental Consequences ◽

Rational Management ◽

Potential Impact ◽

The Impact

The aim of the article is to estimate the impact of reducing the consumption of mineral fertilizers resulting from the New Green Deal assumptions on the yields of major crops in the 2030 perspective. The material for analysis was statistical data from the CSO and FAO. The collected data was processed dynamically by using trend analyzes and Pearson linear correlation. Maintaining the current trend of increasing the dose of NPK mineral fertilization will allow the use of crop production potential in Poland. On the other hand, the introduction of the NGD assumptions may result in a stagnation of crop yield at the current level. However, in relation to the scenario assuming the continuation of the current upward trend, these yields will be much lower. Reducing mineral fertilization introduced by means of an administrative decision without taking the principles of rational management of fertilizer components into consideration may have negative environmental consequences.

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Crop Production Pushes Up Greenhouse Gases Emissions in China: Evidence from Carbon Footprint Analysis based on National Statistics Data

Sustainability ◽

10.3390/su11184931 ◽

2019 ◽

Vol 11 (18) ◽

pp. 4931 ◽

Cited By ~ 2

Author(s):

Wang ◽

Chen ◽

He ◽

Guan ◽

...

Keyword(s):

Carbon Footprint ◽

Crop Production ◽

Ghg Emissions ◽

Agricultural Practices ◽

Utilization Efficiency ◽

Cropping Pattern ◽

Agricultural Policies ◽

Grain Crops ◽

The Past ◽

Crop System

The rapid growth of crop yield in China was maintained by more fossil fuel inputs in the past years, causing concern about the greenhouse gas (GHG) emissions related to crop production. Therefore, this study analyzed historical dynamics of carbon footprint (CF) of 11 major crops in China during 2000–2016 and estimated possible GHG emissions of the system in 2020 under different scenarios. Results indicated that the GHG emissions of the Chinese crop system increased by 20.07% from 2000 to 2016, in which the grain crops contributed to more than 80% of the total emissions. The GHG emissions from grain crops including maize, wheat, and rice as well as sugar crops including sugarcane and sugar beet were increased by 28.07% and 14.27% in the study period, respectively, making up the primary factor of increased GHG emissions of crop system in China. Moreover, if the cropping pattern and agricultural practices is not improved in the future, the GHG emissions from Chinese crop system are estimated to increase by 346.19 million tons in 2020. If advanced agricultural policies and practices are implemented, the GHGs emissions of crop system in China in 2020 are estimated to be 2.92–12.62% lower than that in 2016. Overall, this study illustrated that the crop system in China contributed to the growth of GHG emissions in China over the past decades. Improving utilization efficiency of fertilizers and crop structure in China are the most important ways to reduce GHG emissions from the Chinese crop system.

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Doubling the Agricultural Income by 2022 in India: Issues and Challenges - Evidence From Andhra Pradesh

IRA-International Journal of Management & Social Sciences (ISSN 2455-2267) ◽

10.21013/jmss.v13.n3.p4 ◽

2018 ◽

Vol 13 (3) ◽

pp. 95

Author(s):

Srinivasa Rao Pasala

Keyword(s):

Andhra Pradesh ◽

Weighted Average ◽

Agricultural Practices ◽

Household Survey ◽

National Commission ◽

Fish Ponds ◽

Agriculture Sector ◽

Agricultural Income ◽

Irrigated Area ◽

The Impact

<p>The mechanism of reforms is not given enough government funding and financial assistance to the agriculture sector. This impacted the conditions of cultivation, particularly in rural living conditions. The impact of free trade brought unstable prices, difficulties in agriculture export and import and which is affected farmer’s welfare, livelihood, and other employment alternatives. The most adverse effect that has become a curse to farmers is the multiple of low price and instability in the output of cash crops. Andhra Pradesh mostly depends on rainfall agriculture. Monsoon and seasonal conditions play a crucial role in Andhra Pradesh agriculture. The proportion of area under agriculture is 37.30 percent (including fish ponds). The gross irrigated area (35.81 lakh hectares) is 48.29 percent of gross area sown (74.18 lakh hectare.) in the state. The ratio of gross irrigated area to net irrigated area is 1.32 in 2016-17, where it was 1.29 in 2015-16. (Agricultural Statistics at a Glance 2016-17). An attempt is made to study in depth the evolution of cost conditions in the rainfed and irrigated land agricultural practices, regarding the sustainability of livelihood practices. Both quantitative and qualitative methods of research were applied in the study through a collection of data by household survey and in-depth interviews, site visits, and field observations. For an understanding of costs and returns, calculate Cost A, Cost B and Cost C and Gross, Farm Business, Family Labour, Net, Farm Investment Incomes. The policymakers should focus on strict implement National Commission on farmer’s recommendations of increasing MSP should be at least 50 percent more than the weighted average cost of production, introduce availability of the leased technology (i.e. crop sowing and cutting machines etc.) to marginal and small farmers, reduce the inequalities between villages and towns and promote Zero Budget Natural Farming across the country.</p>

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Determinants of the Adoption of Climate-Smart Agricultural Practices by Small-Scale Farming Households in King Cetshwayo District Municipality, South Africa

Sustainability ◽

10.3390/su12010195 ◽

2019 ◽

Vol 12 (1) ◽

pp. 195 ◽

Cited By ~ 3

Author(s):

Victor O. Abegunde ◽

Melusi Sibanda ◽

Ajuruchukwu Obi

Keyword(s):

Climate Change ◽

Ghg Emissions ◽

Agricultural Practices ◽

Educational Status ◽

Farming System ◽

Farm Income ◽

Small Scale ◽

Structured Interviews ◽

Small Scale Farmers ◽

The Impact

Agriculture, particularly small-scale farming, is both a contributor to greenhouse gas (GHG) emissions and a victim of the effects of climate change. Climate-smart agriculture (CSA) offers a unique opportunity to adapt to the effects of climate change while at the same time mitigating GHG emissions. The low response to the adoption of CSA among small-scale farmers raises questions as to the factors influencing its adoption in the small-scale farming system. With the aid of a close-ended questionnaire, structured interviews were conducted and formed the basis on which data were generated from 327 small-scale farmers selected through random sampling. Descriptive statistics, Composite Score Index and a Generalized Ordered Logit Regression (gologit) model were employed for the analysis. The majority (56.6%) of the sampled farmers fell in the medium category of users of CSA practices, while the lowest proportion (17.7%) of the sampled farmers fell in the high category. The use of organic manure, crop rotation and crop diversification were the most popular CSA practices among the sampled farmers. Educational status, farm income, farming experience, size of farmland, contact with agricultural extension, exposure to media, agricultural production activity, membership of an agricultural association or group and the perception of the impact of climate change were found to be statistically significant and positively correlated with the level of CSA adoption. Furthermore, off-farm income and distance of farm to homestead were statistically significant but negatively correlated with the CSA level of adoption. This paper argues that climate change-related education through improved extension contact and exposure to mass media can strengthen integrated farm activities that bolster farm income. Additionally, farmer associations or groups should be given adequate attention to facilitate CSA adoption as a means to climate change mitigation and resilience.

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Examining Farmers’ Adoption Decisions towards Precision-Agricultural Practices in Greek Dairy Cattle Farms

Sustainability ◽

10.3390/su14010411 ◽

2021 ◽

Vol 14 (1) ◽

pp. 411

Author(s):

Georgios Kleftodimos ◽

Leonidas Sotirios Kyrgiakos ◽

Christina Kleisiari ◽

Aristotelis C. Tagarakis ◽

Dionysis Bochtis

Keyword(s):

Dairy Cattle ◽

Precision Agriculture ◽

Crop Production ◽

Production Systems ◽

Management Strategies ◽

Ghg Emissions ◽

Agricultural Practices ◽

Adoption Decisions ◽

Alternative Practices ◽

Cattle Farms

Nowadays, the sustainability of Greek dairy cattle farms is questionable due to low competitiveness and high GHG emissions. In this context, the BIOCIRCULAR project, funded by the EYDE ETAK, developed a series of alternative practices focusing on precision agriculture principles. However, the adoption of any practice from farmers is not a given, and depends on several determinants. Hence, the objective of this study is to examine farmers’ adoption decisions regarding precision-agricultural practices in Greek dairy production systems, as well as the economic and environmental impacts of this adoption. In order to achieve this, a bio-economic model was developed based on mathematical programming methods. The proposed model simulates a large number of dairy cattle farms with or without crop production, including different management strategies and their relevant costs, and provides an environmental assessment of the adopted practices based on GHG emissions. Moreover, in order to analyze farmers’ adoption decisions, different policy measures, linked to various environmental outcomes, were examined. The results highlighted that the adoption of precision-agricultural practices led to significantly better economic and environmental outcomes. Furthermore, it was found that different levels of incentives can be efficiently targeted to encourage the adoption of new feeds and, more broadly, to secure the sustainability of the sector.

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The Impact of a Controlled-Release Fertilizer on Greenhouse Gas Emissions and the Efficiency of the Production of Chinese Cabbage

Energies ◽

10.3390/en13082063 ◽

2020 ◽

Vol 13 (8) ◽

pp. 2063 ◽

Cited By ~ 5

Author(s):

Jakub Sikora ◽

Marcin Niemiec ◽

Anna Szeląg-Sikora ◽

Zofia Gródek-Szostak ◽

Maciej Kuboń ◽

...

Keyword(s):

Greenhouse Gas ◽

Chinese Cabbage ◽

Slow Release ◽

Functional Unit ◽

Ghg Emissions ◽

Agricultural Practices ◽

Reference Object ◽

Marketable Yield ◽

Slow Release Fertilizers ◽

The Impact

Optimization of plant fertilization is an important element of all quality systems in primary production, such as Integrated Production, GLOBAL G.A.P. (Good Agriculture Practice) or SAI (Sustainable Agriculture Initiative). Fertilization is the most important element of agricultural treatments, affecting the quantity and quality of crops. The aim of the study was to assess greenhouse gas (GHG) emissions in the cultivation of Chinese cabbage, depending on the technological variant. The factor modifying the production technology was the use of fertilizers with a slow release of nutrients. One tonne of marketable Chinese cabbage crop was selected as the functional unit. To achieve the research goal, a strict field experiment was carried out. Calculation of the total amount of GHG emitted from the crop was made in accordance with ISO 14040 and ISO 14044. The system boundaries included the production and use of fertilizers and pesticides, energy consumption for agricultural practices and the emission of gases from soil resources and harvesting residue. The use of slow-release fertilizers resulted in a greater marketable yield of cabbage compared to conventional fertilizers. The results of the research indicate a significant potential for the use of slow-release fertilizers in reducing agricultural emissions. From the environmental and production point of view, the most favourable variant is the one with 108 kg N·ha−1 slow-release fertilizers. At a higher dose of this element, no increase in crop yield was observed. At this nitrogen dose, a 30% reduction in total GHG emissions and a 50% reduction in fertilizer emissions from the use of per product functional unit were observed. The reference object was fertilization in accordance with production practice in the test area.

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