Long-term residue and water management practice effects on particulate organic matter in a loessial soil in eastern Arkansas, USA

Geoderma ◽  
2019 ◽  
Vol 337 ◽  
pp. 792-804 ◽  
Author(s):  
Johan Desrochers ◽  
Kristofor R. Brye ◽  
Edward Gbur ◽  
Erik D. Pollock ◽  
Mary C. Savin
Keyword(s):  
Water Management ◽  
Organic Matter ◽  
Particulate Organic Matter ◽  
Management Practice ◽  
Practice Effects ◽  
Loessial Soil ◽  
Water Management Practice

scholarly journals Assessing Framing of Uncertainties in Water Management Practice

2009 ◽  
Vol 23 (15) ◽  
pp. 3191-3205 ◽  
Author(s):  
Nicola Isendahl ◽  
Art Dewulf ◽  
Marcela Brugnach ◽  
Greet François ◽  
Sabine Möllenkamp ◽  
...  
Keyword(s):  
Water Management ◽  
Management Practice ◽  
Water Management Practice

scholarly journals Learning from Collaborative Research in Water Management Practice

2012 ◽  
Vol 26 (11) ◽  
pp. 3251-3266 ◽  
Author(s):  
G. T. Raadgever ◽  
E. Mostert ◽  
N. C. van de Giesen
Keyword(s):  
Water Management ◽  
Collaborative Research ◽  
Management Practice ◽  
Water Management Practice

Using framing parameters to improve handling of uncertainties in water management practice

2010 ◽  
Vol 20 (2) ◽  
pp. 107-122 ◽  
Author(s):  
Nicola Isendahl ◽  
Claudia Pahl-Wostl ◽  
Art Dewulf
Keyword(s):  
Water Management ◽  
Management Practice ◽  
Water Management Practice

Organic management and legume presence maintained phosphorus bioavailability in a 17-year field crop experiment

2013 ◽  
Vol 30 (3) ◽  
pp. 211-222 ◽  
Author(s):  
Courtney Gallaher ◽  
Sieglinde S. Snapp
Keyword(s):  
Organic Matter ◽  
Soil Properties ◽  
Particulate Organic Matter ◽  
P Uptake ◽  
Field Crop ◽  
Inorganic P ◽  
Soil P ◽  
P Fertilizer ◽  
Term Management

AbstractLegumes have been shown to enhance bioavailability of phosphorus (P) from sparingly soluble pools, yet this functional trait remains underutilized in agriculture, and is untested at decadal scales. Management and legume presence effects on temporal soil properties were evaluated in a 17-year field crop experiment using soil samples collected in 1992, 2000 and 2006. Management systems compared included: (1) conventional corn–soybean–wheat rotation (C–S–W), (2) organic (C–S–W+red clover), (3) alfalfa and (4) early successional field. To evaluate the effects of long-term management versus recent management (residues and P fertilizer) on P and bio-availability to soybean, subplots of soybean were established with and without P-fertilizer (30 kg P ha−1), and compared to subplots and main plot with the long-term system. We evaluated soil properties (C, total P, Bray extractable inorganic P, particulate organic matter phosphorus) and soybean P uptake, biomass and yield. Recent fertilizer P inputs had no detectable influence on soil P, and total soil P stayed stable at ~350 mg P kg−1, whereas inorganic P (Pi) declined from an initial value of 54 to an average of 35 mg P kg−1. A P balance was constructed and showed a net loss of −96.7 kg P ha−1 yr−1 for the organic system, yet Bray-Pi and soybean P uptake were maintained under organic production at similar levels to the conventional, fertilized system. Particulate organic matter P was 57, 82 and 128% higher in organic, alfalfa and successional treatments, respectively, compared to conventional. A similar pattern was observed for soil C, soybean yield and bioavailable P, which were 20–50% higher in the organic, alfalfa and successional systems relative to conventional. This study provides evidence that long-term management history influences bioavailability of P.

scholarly journals The Rothamsted long-term experiments: Are they still relevant?

1996 ◽  
Vol 76 (4) ◽  
pp. 559-571 ◽  
Author(s):  
P. R. Poulton
Keyword(s):  
Organic Matter ◽  
Global Change ◽  
Soil Fertility ◽  
Crop Yield ◽  
Atmospheric Pollution ◽  
Management Practice ◽  
Policy Makers ◽  
Land Management Practice ◽  
Long Term Experiments

Maintaining soil fertility and sustaining or increasing crop yield is of worldwide importance. Many factors impact upon the complex biological, chemical and physical processes which govern soil fertility. Changes in fertility caused by acidification, declining levels of organic matter, or P and K status may take many years to appear. These properties can in turn be affected by external influences such as atmospheric pollution, global change, or changes in land management practice. Long-term experiments provide the best practical means of studying changes in soil properties and processes and providing information for farmers, scientists and policy makers. This paper shows how the experiments run at Rothamsted in southeast England continue to provide data which are highly relevant to today's agriculture and wider environmental concerns. Examples are given of how crop yield is affected by soil organic matter, by pests and disease and by P nutrition. The effect of atmospheric pollution on soil acidity and the mobilization of heavy metals are also examined. The need for making better use of existing long-term experiments is stressed. Key words: Soil fertility, sustainability, long-term experiments, global change

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