scholarly journals Soil Organic Matter and Root and Rhizome Responses to Management Strategies in Smooth Bromegrass Pastures

2014 ◽  
Vol 106 (5) ◽  
pp. 1886-1892 ◽  
Author(s):  
John A. Guretzky ◽  
Ana B. Wingeyer ◽  
Walter H. Schacht ◽  
Terry J. Klopfenstein ◽  
Andrea Watson
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Management Strategies ◽  
Smooth Bromegrass

Suitable orchard floor management strategies in organic apple orchards that augment soil organic matter and maintain tree performance

2014 ◽  
Vol 378 (1-2) ◽  
pp. 325-335 ◽  
Author(s):  
Gerry Neilsen ◽  
Tom Forge ◽  
Denis Angers ◽  
Denise Neilsen ◽  
Eugene Hogue
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Management Strategies ◽  
Apple Orchards ◽  
Orchard Floor Management ◽  
Tree Performance

scholarly journals Nutrient Cycling and Soil Health in Organic Cropping Systems - Importance of Management Strategies and Soil Resilience

2015 ◽  
Vol 4 (3) ◽  
pp. 80 ◽  
Author(s):  
Derek H. Lynch
Keyword(s):  
Organic Matter ◽  
Microbial Community ◽  
Soil Organic Matter ◽  
Organic Agriculture ◽  
Soil Microbial Community ◽  
Cropping Systems ◽  
Management Strategies ◽  
Soil Health ◽  
Farming System ◽  
Soil Microbial

<p>Organic field crop systems are characterized by complex rotations with high spatial and temporal vegetative diversity, an enhanced use of legumes, and reduced external nutrient (nitrogen (N) and phosphorus (P)) use. At the same time, a core premise of certified organic agriculture is that this farming system provides benefits to soil health via enhanced microbial diversity. The following short review, drawing primarily upon selected studies from North America, examines the impact of farming systems, and various management strategies within these, on soil organic matter, N and P dynamics, and soil microbial and macrofaunal abundance and diversity. Organic cropping systems are shown to provide benefits with respect to reduced farm N and P surpluses, in combination with maintenance of soil organic matter and improved soil health. However, soil health benefits appear consistently achieved only for larger soil organisms partly due to the resilience of the soil microbial community. Recent research examining soil P dynamics and P uptake in relation to legume biological N<sub>2</sub> fixation and bacterial and mycorrhizal community diversity provide evidence of the resilience of the soil microbial community with respect to functionality, if not diversity of microbial community composition. These latter results may challenge organic agriculture core premises of consistent benefits to soil health via enhanced microbial diversity, but in its place may lead to an improved understanding of how specific cropping practices and production system intensity overall, rather than farming system per se, influences both nutrient cycling and soil ecosystem functioning.</p>

Soil Organic Matter

1962 ◽  
Vol 54 (5) ◽  
pp. 470-470
Author(s):  
T. M. McCalla
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter
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