scholarly journals Soil Organic Carbon Pools as Early Indicators for Soil Organic Matter Stock Changes under Different Tillage Practices in Inland Pacific Northwest

2017 ◽  
Vol 5 ◽  
Author(s):  
Rakesh Awale ◽  
Micco A. Emeson ◽  
Stephen Machado
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Pacific Northwest ◽  
Carbon Pools ◽  
Tillage Practices ◽  
Soil Organic Carbon Pools ◽  
Early Indicators

scholarly journals Soil Organic Carbon Stock as Affected by Different Tillage Practices under Rice-Mustard Cropping System

2020 ◽  
pp. 78-84
Author(s):  
Rajat Kumar Parit ◽  
K. Mahanta ◽  
P. K. Bharteey ◽  
H. Khanikar ◽  
P. K. Maurya
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Carbon ◽  
Bulk Density ◽  
Carbon Stock ◽  
Cropping System ◽  
Tillage Practices ◽  
Soc Stocks

Management of soil organic matter (SOM) in arable lands has become increasingly important in many areas of the world to combat land degradation, increase food security, reduce carbon emissions and/or mitigate climate change. Soil carbon cycling and composition are essential components of comprehensive agricultural and ecological impacts and forecasting. Soil Organic Matter (SOM) plays keys to developing drought-resistant soils (i.e., water conservation, evaporation and erosion control and soil water infiltration ease) and ensuring sustainable food production. This study was conducted during 2018 (March) after harvesting of mustard at Instructional-cum-Research Farm, Assam Agricultural University, Jorhat-13, to determine the temporal effect of different tillage practices on soil carbon stock in Rice (Oryza sativa)-Mustard (Brassica juncea)-Sesbania (Sesbania rostrata) cropping system under conservation agriculture system. The soil was acidic (pH- 5.4), sandy loam in texture with CEC-6.28 cmol(p+)/100 g, organic carbon-0.92%, available  N-260 kg ha-1, available P-19 kg ha-1, available K-86 kg ha-1. Tillage practices can potentially affect soil organic carbon (SOC) accumulation in agricultural soils. SOC stocks of the 0-15 cm, 15-30 cm and 30-45 cm soil layers for each treatment were calculated by multiplying bulk density (g/cc), organic carbon (%) and depth of the soil (cm). Significantly lower bulk density was observed in CT and the control over the MT. While soil organic carbon was recorded significantly higher in MT over the CT and the control. The SOC stocks in MT were also higher than those under CT and Control (P < 0.05). The order of SOC stocks in the 0-45 cm soil layer was MT >CT.

scholarly journals Effect of Long-Term Soil Management Practices on Tree Growth, Yield and Soil Biodiversity in a High-Density Olive Agro-Ecosystem

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1036
Author(s):  
Sauro Simoni ◽  
Giovanni Caruso ◽  
Nadia Vignozzi ◽  
Riccardo Gucci ◽  
Giuseppe Valboa ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Structure ◽  
Soil Management ◽  
Carbon Pools ◽  
Grass Cover ◽  
Soil Biodiversity ◽  
Canopy Effect ◽  
Soil Organic Carbon Pools

Edaphic arthropod communities provide valuable information about the prevailing status of soil quality to improve the functionality and long-term sustainability of soil management. The study aimed at evaluating the effect of plant and grass cover on the functional biodiversity and soil characteristics in a mature olive orchard (Olea europaea L.) managed for ten years by two conservation soil managements: natural grass cover (NC) and conservation tillage (CT). The trees under CT grew and yielded more than those under NC during the period of increasing yields (years 4–7) but not when they reached full production. Soil management did not affect the tree root density. Collecting samples underneath the canopy (UC) and in the inter-row space (IR), the edaphic environment was characterized by soil structure, hydrological properties, the concentration and storage of soil organic carbon pools and the distribution of microarthropod communities. The soil organic carbon pools (total and humified) were negatively affected by minimum tillage in IR, but not UC, without a loss in fruit and oil yield. The assemblages of microarthropods benefited, firstly, from the grass cover, secondly, from the canopy effect, and thirdly, from a soil structure ensuring a high air capacity and water storage. Feeding functional groups—hemiedaphic macrosaprophages, polyphages and predators—resulted in selecting the ecotonal microenvironment between the surface and edaphic habitat.

Sign in / Sign up

Export Citation Format

Share Document