scholarly journals Relationships between Fungal Biomass and Nitrous Oxide Emission in Upland Rice Soils under No Tillage and Cover Cropping Systems

2008 ◽  
Vol 23 (3) ◽  
pp. 201-208 ◽  
Author(s):  
Masakazu Komatsuzaki ◽  
Yoshinori Sato ◽  
Hiroyuki Ohta
Keyword(s):  
Nitrous Oxide ◽  
Fungal Biomass ◽  
Upland Rice ◽  
Cropping Systems ◽  
Nitrous Oxide Emission ◽  
No Tillage ◽  
Rice Soils ◽  
Cover Cropping

Effect of no-tillage and green manure practices on the nitrous oxide emission from cropland

2019 ◽  
Vol 37 (3) ◽  
pp. 309-316
Author(s):  
Sun-Il Lee ◽  
Gun-Yeob Kim ◽  
Jong-Sik Lee ◽  
Eun-Jung Choi
Keyword(s):  
Nitrous Oxide ◽  
Green Manure ◽  
Nitrous Oxide Emission ◽  
No Tillage

Mitigating nitrous oxide emission from soil under conventional and no-tillage in wheat using nitrification inhibitors

2010 ◽  
Vol 136 (3-4) ◽  
pp. 247-253 ◽  
Author(s):  
A. Bhatia ◽  
S. Sasmal ◽  
N. Jain ◽  
H. Pathak ◽  
R. Kumar ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emission ◽  
Nitrification Inhibitors ◽  
No Tillage

scholarly journals Supporting Beneficial Insects for Agricultural Sustainability: The Role of Livestock-Integrated Organic and Cover Cropping to Enhance Ground Beetle (Carabidae) Communities

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1210
Author(s):  
Subodh Adhikari ◽  
Fabian D. Menalled
Keyword(s):  
Winter Wheat ◽  
Cover Crops ◽  
Cropping Systems ◽  
Ground Beetle ◽  
Ground Beetles ◽  
No Tillage ◽  
Cover Cropping ◽  
Beneficial Insects ◽  
Organic Systems ◽  
Organically Managed

Ground beetles (Carabidae) are beneficial insects providing ecosystem services by regulating insect pests and weed seeds. Despite several studies conducted on ground beetles worldwide, there is a lack of knowledge on how these insects are affected by differently managed organic systems (e.g., tillage-based versus grazed-based) compared to that of chemical-based no-tillage conventional cropping systems. In a 5-year (2013–2017) study, we assessed the ground beetle communities in cover crops and winter wheat (Triticum aestivium L.) in Montana, USA, with three contrasting cropping systems: a chemically managed no-tillage, a tillage-based organic, and a livestock-integrated organic with reduced tillage. The first three years (i.e., 2013–2015) corresponded to the transition to organic period, while the last two (i.e., 2016–2017) were conducted in United States Department of Agriculture (USDA) organic-certified tillage-based and livestock-integrated organic systems. The experiment was designed with three management systems across three blocks as the whole plot variable and 5-year rotation of crop phases as the subplot variable. Using pitfall traps, we sampled ground beetles across all cover crop and winter wheat subplots for five years (n = 450). The data were analyzed using mixed effects models and PERMANOVA and visualized with non-metric multidimensional scaling ordination. Our study indicated that organically managed farms, whether tilled or grazed, enhance activity density, species richness, diversity, and evenness of ground beetles in the dryland row crop productions. Also, irrespective of farming system, cover crops supported higher species richness, diversity, and evenness of ground beetles than winter wheat. The ground beetle communities were mostly similar during the transition to organic period. However, during the established organic phase, cropping systems acted as contrasting ecological filters and beetle communities became dissimilar. Cover cropping affected ground beetle communities positively not only in organically managed systems but also in chemical-based conventional systems. Our study provides evidence supporting the adoption of ecologically-based cropping systems such as crop-livestock integration, organic farming, and cover cropping to enhance beneficial insects and their pest-regulation services.

Nitrous oxide emission as affected by tillage, corn-soybean-alfalfa rotations and nitrogen fertilization

1997 ◽  
Vol 77 (2) ◽  
pp. 145-152 ◽  
Author(s):  
A. F. MacKenzie ◽  
M. X. Fan ◽  
F. Cadrin
Keyword(s):  
Nitrous Oxide ◽  
Sandy Loam ◽  
Cropping Systems ◽  
Pore Space ◽  
Nitrous Oxide Emission ◽  
Economic Losses ◽  
Silty Clay ◽  
Fertilizer N ◽  
Management Procedures ◽  
N Rates

Nitrous oxide (N2O) produced from agricultural activities represents a threat to the ozone layer and economic losses. Rates and magnitudes of N2O emissions of cropping systems must be determined to establish corrective management procedures. In 1994, N2O emissions were determined with corn (ZeaMays L.) and corn-legume rotations. Continuous corn was studied on four soils, two from a long-term experiment, a Ste. Rosalie heavy clay (Humic Gleysol) and a Chicot sandy loam (Grey-Brown Podzol), at 0, 170, 285 or 400 kg N ha−1, and two from a corn rotation study, a Ste. Rosalie clay (Humic Gleysol) and an Ormstown silty clay loam (Humic Gleysol). Treatments included no-till (NT) and conventional tillage (CT), monoculture corn (CCCC), monoculture soybean; corn-soybean; and soybean-corn-alfalfa phased rotations. Nitrogen rates of 0, 90, or 180 kg N ha−1 for corn and 0, 20, or 40 kg N ha−1 for continuous soybean were used, and soybean/alfalfa following corn no fertilizer N. Rates of N2O emission were measured from closed chambers through the growing season. About 0.99 to 2.1% of N added was lost as N2O. Nitrous oxide emission increased with increased soil water content, NO3 concentration and fertilizer N rates. Emission of N2O was higher with NT than with CT, and with corn than with soybean or alfalfa. A corn system using CT, legumes in rotation and moderate fertilizer N would reduce N2O emission. Key words: Greenhouse gases, soil nitrate, tillage methods, water-filled pore space, denitrification, rotations

scholarly journals Multispecies cover cropping promotes soil health in no-tillage cropping systems of North Carolina

2021 ◽  
pp. 00087
Author(s):  
A.J. Franzluebbers ◽  
S.W. Broome ◽  
K.L. Pritchett ◽  
M.G. Wagger ◽  
N. Lowder ◽  
...  
Keyword(s):  
North Carolina ◽  
Cropping Systems ◽  
Soil Health ◽  
No Tillage ◽  
Cover Cropping

Estimation of Nitrous Oxide Emission from Different Livestock Manure Composts Applied to Cropland

2019 ◽  
Vol 10 (4) ◽  
pp. 325-332
Author(s):  
Eunjung Choi ◽  
Gunyeob Kim ◽  
Sun il Lee ◽  
Hyuncheol Jeong ◽  
Jongsik Lee ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emission ◽  
Livestock Manure
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