How do the heterotrophic and the total soil respiration of an oil palm plantation on peat respond to nitrogen fertilizer application?

Geoderma ◽  
2016 ◽  
Vol 268 ◽  
pp. 41-51 ◽  
Author(s):  
Louis-Pierre Comeau ◽  
Kristell Hergoualc'h ◽  
Jodie Hartill ◽  
Jo Smith ◽  
Louis V. Verchot ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Nitrogen Fertilizer ◽  
Oil Palm ◽  
Fertilizer Application ◽  
Oil Palm Plantation ◽  
Total Soil ◽  
Total Soil Respiration

scholarly journals Impact of Nitrogen Fertilizer Application on Nitrous Oxide Emission in Oil Palm Plantation

2015 ◽  
Vol 30 ◽  
pp. 315-319 ◽  
Author(s):  
Nurul Izzati Mat Akhir ◽  
Faradiella Mohd Kusin ◽  
Ferdaus Mohamat-Yusuff ◽  
Muhamad Awang ◽  
Zulfa Hanan Ash’aari
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Fertilizer ◽  
Oil Palm ◽  
Fertilizer Application ◽  
Nitrous Oxide Emission ◽  
Oil Palm Plantation

Variability of total soil respiration in a Mediterranean vineyard

Soil Research ◽  
2015 ◽  
Vol 53 (5) ◽  
pp. 531 ◽  
Author(s):  
Egidio Lardo ◽  
Assunta Maria Palese ◽  
Vitale Nuzzo ◽  
Cristos Xiloyannis ◽  
Giuseppe Celano
Keyword(s):  
Soil Respiration ◽  
Spatial Variability ◽  
Co2 Emissions ◽  
Temporal Dynamics ◽  
Non Invasive ◽  
Total Soil ◽  
Greenhouse Gas Flux ◽  
Flux Measurements ◽  
Total Soil Respiration

Total soil respiration (TSR) is the major component of the CO2 global flux. The knowledge of the temporal-spatial variability of TSR allows for a better interpretation of a critical component of global greenhouse gas flux measurements. The objective of the research was to evaluate the TSR dynamic over a long measurement period in a vineyard in the South of Italy. A static home-made automatic system was used to measure TSR for a three year period. A portable gas analyser (Li-Cor 6400-09) was used to study TSR spatial variability. A non-invasive geophysical technique (Electromagnetic Induction – EMI) was applied to search for a significant relationship between apparent soil electrical conductivity (ECa), the EMI signal and TSR. Long-term measurements of TSR enabled to study its temporal dynamics. CO2 rates ranged from 0.78 to 43.7 g CO2 m–2 day–1. TSR increased during spring and decreased by 45–50% during the mid-summer. The daily trend of TSR showed differences between the seasons studied reporting a clearly variation among TSR measured on row and inter-row positions. The supplemental irrigation significantly affected (P < 0.001) CO2 soil effluxes which showed a weekly mean increase of 300%. Significant inverse relationships were found by interpolating TSR values and ECa (coefficient of correlation ranging from –0.43 to –0.83 at P < 0.001). The spatialisation of TSR at field scale was performed using the linear regression between TSR values and EMI signals. TSR spatialisation gave a more detailed view of CO2 emissions distribution within the vineyard. EMI technique could be a useful tool to compute accurately the global CO2 emissions which are a complex and hard to measure component of the agrosystem carbon balance.

scholarly journals Effect of Fertilizer Application on Groudwater Quality at an Oil Palm Plantation

2017 ◽  
Vol 2 (1) ◽  
pp. 67
Author(s):  
Muhammad edwin syahputra Lubis
Keyword(s):  
Groundwater Quality ◽  
Oil Palm ◽  
Fertilizer Application ◽  
Optimum Growth ◽  
Oil Palm Plantation ◽  
Nitrate N ◽  
Run Off ◽  
Ammonium N ◽  
Housing Complex

<p><em>Oil palm plantations need fertilizers for optimum growth and production. However, excessive use of fertilizers can lead to pollution of groundwater. For this reason, a study was carried out to investigate groundwater quality of an oil palm ecosystem, which involved the measurement of 9-point monitor wells and run-off. This research was conducted in Kabun-Aliantan (N: 0002.925’ E: 100049.977’). Tandun, Riau-Indonesia. The location points of the monitored wells in this study comprised a young oil palm area (P1), an adult oil palm area near Lau river (P2), a housing complex at oil palm plantation (P3), an adult oil palm area at Marihat, Block A (P4), a housing 1 at the sub-district town (P5), a housing 2 at the sub-district town (P6), a cocoa area (P7), a village housing (P8), at the side of Lau river (PR), and a run-off in a micro catchment (N: 00027.936’ E: 100049, 977’). The parameters analyzed in the water samples were pH, nitrate-N (NO3</em><em>-</em><em>N), nitrite-N (NO2</em><em>-</em><em>N), ammonium-N (NH4-N), phosphate (P), potassium (K), calcium (Ca) and magnesium (Mg). </em></p><p><em>In general, pH, NO3</em><em>-</em><em>N, NO2</em><em>-</em><em>N, NH4-N, P, K, Ca and Mg increased after fertilizer application and decreased with time. All levels of parameters were lower than the WHO standard for drinking water. This study showed that the fertilizers on the oil palm plantation did not pollute the groundwater quality. However, groundwater pollution was found to be caused by residential wastes, such as the use of detergents and other human activities.</em></p>

scholarly journals Contribution of root respiration to total soil respiration during non-growing season in mine reclaimed soil with different covering soil thicknesses

2020 ◽  
Author(s):  
Min Chen ◽  
Xiaoyang Chen ◽  
Zhiyong Hu ◽  
Tingyu Fan ◽  
Shiwen Zhang ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Soil Temperature ◽  
Root Respiration ◽  
Growing Season ◽  
Growth Season ◽  
Soil Thickness ◽  
Total Soil ◽  
Reclaimed Soil ◽  
Total Soil Respiration ◽  
Monthly Variations

Abstract An accurate assessment of root respiration in mine reclaimed soil is important for effectively evaluating mining area ecosystem. This study investigated dynamic changes in root respiration and contribution of root respiration to total soil respiration (Rr/Rt ratio) during the non-growth season in mine reclaimed soil with different covering soil thicknesses. According to covering soil thicknesses, the study area was divided into four sites: 10-25 cm (site A), 25-45 cm (site B), 45-55 cm (site C) and 55-65 cm (site D). From November 2017 to April 2018 (except February in 2018), the soil respiration, root respiration, temperature at 5 cm, water content and root biomass were measured. The results showed that soil temperature and root respiration exhibited similar diurnal and monthly variations. The root respiration was strongly influenced by soil temperature during the non-growing season, which showed an exponential and positive relationship with soil temperature (P<0.001). The root respiration varied with the covering soil thickness and was the greatest with the covering soil thickness at 25–45 cm. The Rr/Rt ratio also exhibited monthly variations. During the non-growth season, the mean value of the Rr/Rt ratio were 51.15% in mine reclaimed soil. The study indicated that root respiration was the primary source of soil respiration and important to estimate the potential of emission of soil CO 2 at regional scale in mine reclaimed soil.

scholarly journals Contribution of root respiration to total soil respiration during non-growing season in mine reclaimed soil with different covering soil thicknesses

2020 ◽  
Author(s):  
Min Chen ◽  
Xiaoyang Chen ◽  
Zhiyong Hu ◽  
Tingyu Fan ◽  
Shiwen Zhang ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Soil Temperature ◽  
Root Respiration ◽  
Regional Scale ◽  
Growing Season ◽  
Soil Thickness ◽  
Total Soil ◽  
Reclaimed Soil ◽  
Total Soil Respiration ◽  
Monthly Variations

Abstract An accurate assessment of root respiration in mine reclaimed soil is important for effectively evaluating mining area ecosystem. This study investigated dynamic changes in root respiration and contribution of root respiration to total soil respiration (Rr/Rt ratio) during the non-growing season in mine reclaimed soil with different covering soil thicknesses. According to covering soil thicknesses, the study area was divided into four sites: 10-25 cm (site A), 25-45 cm (site B), 45-55 cm (site C) and 55-65 cm (site D). From November 2017 to April 2018 (except February in 2018), the soil respiration, root respiration, temperature at 5 cm, water content and root biomass were measured. The results showed that soil temperature and root respiration exhibited similar diurnal and monthly variations. The root respiration was strongly influenced by soil temperature during the non-growing season, which showed an exponential and positive relationship with soil temperature (P<0.001). The root respiration varied with the covering soil thickness and was the greatest with the covering soil thickness at 25–45 cm. The Rr/Rt ratio also exhibited monthly variations. During the non-growing season, the mean value of the Rr/Rt ratio was 51.15% in mine reclaimed soil. The study indicated that root respiration was the primary source of soil respiration and important to estimate the potential emission of soil CO2 at regional scale in mine reclaimed soil.

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