Carbon dioxide emission in relation with irrigation and organic amendments from a sweet corn field

Fares, Ali; Bensley, Adam; Bayabil, Haimanote K.; Awal, Ripendra; Fares, Samira; Valenzuela, Hector; Abbas, Farhat

doi:10.1080/03601234.2017.1292094

Cited by 15 publications

(9 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Selected chemical properties of chicken manure, dairy manure, and milorganite are given in Table 2. Target N application rates of 168, 336 and 672 kg N ha −1 representing low, medium and high rates, respectively, were used based on the recommendations from previous researchers 38,44 .…”

Section: Methodsmentioning

confidence: 99%

Soil CO2 emission in response to organic amendments, temperature, and rainfall

Ray

Griffin

Fares

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

Vegetated land surfaces play an important role in determining the fate of carbon in the global carbon cycle. However, our understanding of the terrestrial biosphere on a global scale is subject to considerable uncertainty, especially concerning the impacts of climatic variables on the carbon cycle. Soil is a source and also a sink of co 2 exchange and helps in carbon sequestration. Agricultural management practices influence soil water dynamics, as well as carbon cycling by changing soil CO 2 emission and uptake rates. the rate of soil co 2 emission varies for different crops and different organic amendments. the major goal of this study was to assess the impacts of the type and rate of organic amendment on soil co 2 emission in a collard greens crop grown in the southeast texas environment. thirty-six plots were developed to grow collard greens on prairie View A&M University's Research farm. three types of organic amendments (chicken manure, Dairy manure, and Milorganite), at four levels of application (0, 168, 336, and 672 kg N/ha) were used and replicated three times. Each organic amendment type was applied to nine randomly selected plots. three random plots were used as a control in each row. We measured daily soil co 2 emission for the first two weeks and every other day in a week during the experiment. We evaluated the effects of organic amendments and the application rates on soil co 2 emission for collard greens during two growing seasons. the results showed higher the application rates for each organic amendment, higher the co 2 emissions from the soil. the results also showed higher cumulative co 2 emissions for the soils amended with chicken manure and milorganite, but lowest for the soils amended with dairy manure. This field experiment and analyses help better understand the temporal and spatial variations of soil co 2 emission, and also help to develop best management practices to maximize carbon sequestration and to minimize soil co 2 emissions during the growth periods of collard greens under changing temperatures using different organic amendments, and application rates. Vegetated land surfaces play a significant role in controlling the carbon dynamics in the global carbon cycle; however, knowledge about the comprehensive role of the terrestrial biosphere on regional to global scale under changing climate is still limited 1. Greenhouse gases, including CO 2 emissions, are rapidly increasing because Earth's climate is continuously warming 2-4. The physiological processes of vegetation leaves and photosynthetic capacity, which influence carbon emission and carbon uptake, rely on daily and seasonal variations of weather parameters, and hydrologic and climatic variables (e.g., solar energy, soil and air temperatures, humidity deficits, soil moisture) 5-10. Hence, CO 2 fluxes over agricultural lands are expected to vary on daily and seasonal time scales. During the growing season, vegetation coverage reduces bare soil areas to the environment. For example, in the beginning, the soil surface used to be...

show abstract

Section: Methodsmentioning

confidence: 99%

Soil CO2 emission in response to organic amendments, temperature, and rainfall

Ray

Griffin

Fares

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…Soil moisture content, which is controlled by irrigation in most agricultural soils, plays an important role in modulating the release and consumption of GHGs [39,40]. Increased plant biomass and soil microbial activity as a result of higher volume or more frequent irrigation lead to increases in CO 2 and N 2 O emissions compared to rainfed or non-irrigated soils [41]. This is because increased soil water content accelerates microbial respiration of soil organic matter, which enhances CO 2 flux [7].…”

mentioning

confidence: 99%

Irrigation and Greenhouse Gas Emissions: A Review of Field-Based Studies

et al. 2020

View full text Add to dashboard Cite

Irrigation practices can greatly influence greenhouse gas (GHG) emissions because of their control on soil microbial activity and substrate supply. However, the effects of different irrigation management practices, such as flood irrigations versus reduced volume methods, including drip and sprinkler irrigation, on GHG emissions are still poorly understood. Therefore, this review was performed to investigate the effects of different irrigation management strategies on the emission of nitrous oxide (N2O), carbon dioxide (CO2), and methane (CH4) by synthesizing existing research that either directly or indirectly examined the effects of at least two irrigation rates on GHG emissions within a single field-based study. Out of thirty-two articles selected for review, reduced irrigation was found to be effective in lowering the rate of CH4 emissions, while flood irrigation had the highest CH4 emission. The rate of CO2 emission increased mostly under low irrigation, and the effect of irrigation strategies on N2O emissions were inconsistent, though a majority of studies reported low N2O emissions in continuously flooded field treatments. The global warming potential (GWP) demonstrated that reduced or water-saving irrigation strategies have the potential to decrease the effect of GHG emissions. In general, GWP was higher for the field that was continuously flooded. The major finding from this review is that optimizing irrigation may help to reduce CH4 emissions and net GWP. However, more field research assessing the effect of varying rates of irrigation on the emission of GHGs from the agricultural field is warranted.

show abstract

“…During this study, it was estimated that light pruning of tea bushes of TV1 and TV23 cultivars produced approximately 23 Mg ha −1 and 30 Mg ha −1 plant residues, respectively (Supporting Information Table S1). Schnitzer and Fares et al . observed that organic amendment at 20 Mg ha −1 leads to almost 50% increase in CO 2 emission from soil.…”

Section: Discussionmentioning

confidence: 99%

Enhanced microbial respiration due to carbon sequestration in pruning litter incorporated soil reduced the net carbon dioxide flux from atmosphere to tea ecosystem

Pramanik

Phukan

2019

J Sci Food Agric

View full text Add to dashboard Cite

BACKGROUND: Tea (Camellia sinensis L.) bushes are periodically (at 3-4 year intervals) pruned (cut from top) to maintain vegetative growth stage and constant height. Plant residues (prunings litter) generated after pruning are generally left in the field as a potential source of organic matter in soil. Organic carbon (C) sequestration due to pruning litter incorporation is expected to increase microbial activity in soil. Being an evergreen plant, tea bushes assimilate atmospheric carbon dioxide (CO 2 ) throughout the year; however, the relation between decomposition of pruning litters and net CO 2 flux for tea plantation have not been studied before. The objective of this experiment was to evaluate the relation between organic C accumulation and microbial respiration in pruning litters incorporated soil and its subsequent effect on the net CO 2 flux from the atmosphere to tea plantation. RESULTS: Tea bushes assimilated 1878.2-2371.2 kg CO 2 ha −1 from the atmosphere within December to November; however, pruned bushes assimilated 1451.7-1840.8 kg CO 2 ha −1 within the same period. Decomposition of pruning litters added organic matter in soil, which was mostly accumulated in larger soil aggregates having 2.0-0.25 mm size. Such organic matter accumulation significantly increased microbial respiration in those aggregates, which in turn increased the overall rate of CO 2 emission from soil to the atmosphere. CONCLUSION: Decomposition of pruning litters leads to emission of 426.5-530.4 kg CO 2 ha −1 from soil. Hence, pruned areas recorded relatively lower (16.0-27.4%) net CO 2 flux from the atmosphere to tea ecosystem as compared to unpruned tea bushes.

show abstract

Carbon dioxide emission in relation with irrigation and organic amendments from a sweet corn field

Abstract: Soil moisture and organic matter level affects soil respiration and microbial activities, which in turn impact greenhouse gas (GHG) emissions. This study was conducted to evaluate the effect of irrigation levels (75%

Cited by 15 publications

References 28 publications

Soil CO2 emission in response to organic amendments, temperature, and rainfall

Soil CO2 emission in response to organic amendments, temperature, and rainfall

Irrigation and Greenhouse Gas Emissions: A Review of Field-Based Studies

Enhanced microbial respiration due to carbon sequestration in pruning litter incorporated soil reduced the net carbon dioxide flux from atmosphere to tea ecosystem

Contact Info

Product

Resources

About