The Impact of Treatment of Organic Manures on Future Soil Carbon Sequestration Under Different Tillage Systems in Pakistan

Shahzad, Khuram; Khan, Asad; Richards, Mark; Smith, Joanne Ursula

doi:10.21162/pakjas/17.4486

Cited by 4 publications

(4 citation statements)

References 24 publications

(30 reference statements)

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“…In soils from the farms with animal production, the mean carbon content was 1.423 g kg −1 , while in the farms without animal production, it was 9.837 g kg −1. The organic carbon content is low and may decrease in sorption capacity, biological activity and plant feeding [35][36][37]. In organic farming, soil organic matter plays a special role, so actions to increases it or at least reduce its losses from soils should be prioritized.…”

Section: Resultsmentioning

confidence: 99%

“…There is a lot of information in scientific literature on the effect of organic farming on the environment [18,37]. Researchers of this problem emphasize that under conditions of organic production, the amount of chemical means of production introduced to soil decreases, biodiversity increases, and emissions of greenhouse gases into the atmosphere are reduced.…”

Section: Resultsmentioning

confidence: 99%

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Selected Properties of Soils for Long-Term Use in Organic Farming

et al. 2020

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The goal of organic farming with respect to plant production is to create high-quality products while minimizing human impacts. The aim of this paper was to assess soil properties in selected organic farms in terms of the achievement of general and specific objectives of organic farming. Fifty five (55) organic farms were selected for the research; twenty five (25) of those farms additionally had conventional animal production with cattle breeding. Soil samples were collected from each farm and, the following parameters, deciding about the suitability for agriculture were determined: pH, content of organic carbon, available phosphorus and potassium, mineral nitrogen, and Total nitrogen content. The content of available phosphorus and mineral nitrogen was very low or low in most of the studied soils, which can lead to disturbance of homeostasis of agroecosystems. Potassium content in these soils was high. The properties of the studied soils indicate a high risk of chemical and biological degradation. Without implementing actions that control the pH and increase the content of nitrogen and phosphorus elements, the degradation will increase. Soil properties in the group of farms with animal production were more beneficial from the point of view of crop production, compared with farms that do not breed animals.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Selected Properties of Soils for Long-Term Use in Organic Farming

et al. 2020

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“…The RothC model was developed using experimentally derived biophysical variables and has been widely used over the last 20 years using field measurements in a wide range of countries, including Ethiopia (e.g. Abegaz et al, 2016;Setia et al, 2011aSetia et al, , 2011bShahzad et al, 2017;Smith et al, 1997aSmith et al, , 1997b. It has also been applied at catchment, ( 1)…”

Section: Model Selectionmentioning

confidence: 99%

Modeling long-term attainable soil organic carbon sequestration across the highlands of Ethiopia

Abegaz

Ali

Tamene³

et al. 2021

Environ Dev Sustain

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The objectives of this study across the highlands of Ethiopia were: (i) to characterize the association between soil organic carbon (SOC) stocks and biophysical variables and (ii) to model and map attainable SOC sequestration associated with five improved land management practices. The spatial distribution of the SOC stock was studied using a multiple linear regression model driven by eight biophysical predictors. A widely used SOC model (RothC) was then used to model changes in SOC over the next 20-50 years of improved land management. Simulations were driven by the derived SOC stocks, pH and clay contents that are available in the ISRIC soils database at 250 m resolution and climate data from the "Enhancing National Climate Services Initiative" database. Organic carbon inputs to the model were estimated from the "Improved Crop Varieties Yield Register" of the Ministry of Agriculture and Livestock Resource and the Central Statistics Authority. After 50 years of conservation tillage with 80% of available manure applied to cultivated land, the total SOC stock increased by 169,182,174 t, which is 2.8 times higher than the stock increase with only 50% of available manure applied. Introduction of improved pasture species and measures to control soil erosion was an important source of net carbon sequestration in grasslands. Afforestation and reforestation of degraded landscapes and protection of natural ecosystems further increased soil carbon. This highlights the importance of improved land management practices to SOC sequestration, which in turn could enhance agricultural productivity, food security and sustainable development.

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“…Although manure is the second largest source of GHG emissions in the agricultural sector [45], this amount of cattle manure application in the study had a benefit to soil improvement rather than an environmental impact. Shahzad et al [46] reported that the capacity of carbon sequestration by cattle manure application was 1-1.2 Mg h −1 higher than chemical fertilizer application [46]. A long-term application of manure can increase the capacity of soils to act as a carbon sink when soil quality is low [47].…”

Section: Interpretation Of Lcamentioning

confidence: 99%

Effects of Cultivating Rice and Wheat with and without Organic Fertilizer Application on Greenhouse Gas Emissions and Soil Quality in Khost, Afghanistan

2020

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The agricultural sector is the most important economic component in Afghanistan, as 80% of the population is involved. The improvement of cereal production is an urgent task to meet the nation’s demand for the staple within the limited arable land. To promote a sustainable crop production system, this study examined the soil quality to learn the basic knowledge of soil fertility and the environmental impact of different rice–wheat cropping systems in Khost, Afghanistan by using the life cycle assessment (LCA) method. The economic analysis of each farming system was conducted by the data gathered by the farmers’ interviews along with LCA data collection. The analysis considered the on-farm activities, which were required to produce 1 kg of wheat and rice. It included energy use, production, and farming inputs such as fertilizer and agrochemicals. Conventional farming with organic fertilizer application (CF+OF) was compared with conventional farming (CF). The LCA results showed the total greenhouse gas (GHG) emission was higher in rice production compared to wheat production. However, CO2 absorption by the crops was far greater than the total GHG emission in both systems and showed great potential for soil carbon sequestration for mitigation of global warming. The soil examination revealed the CF+OF system increased soil total carbon (TC), active C (AC), total N (TN), soil organic carbon storage (SCS), P, and K+ after four years of organic fertilizer application. The yield of each crop was slightly higher in the CF system; however, the CF+OF system increased net income by reducing the cost for fertilizer. The study concluded the CF+OF system can improve soil fertility in the long term while saving the farming operation cost. Further research is required to determine the best combination of practices to improve cattle manure characteristics and farm management for soil carbon sequestration to promote a sustainable farming system in the country.

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The Impact of Treatment of Organic Manures on Future Soil Carbon Sequestration Under Different Tillage Systems in Pakistan

Cited by 4 publications

References 24 publications

Selected Properties of Soils for Long-Term Use in Organic Farming

Selected Properties of Soils for Long-Term Use in Organic Farming

Modeling long-term attainable soil organic carbon sequestration across the highlands of Ethiopia

Effects of Cultivating Rice and Wheat with and without Organic Fertilizer Application on Greenhouse Gas Emissions and Soil Quality in Khost, Afghanistan

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