Measuring Rotation and Manure Effects in an Iowa Farm Soil Health Assessment

Karlen, Douglas L.; Obrycki, John F.

doi:10.2134/agronj2018.02.0113

Cited by 9 publications

(8 citation statements)

References 61 publications

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“…These authors document that extended rotations or cover crop incorporation increased soil organic carbon (soil organic carbon increase is 8 ± 4 g kg −1 ). Similar soil quality benefits were documented after the conversion of corn land to forage legumes [38].…”

Section: Soil Quality Studies Focusing On Grazed Pasturessupporting

confidence: 60%

Optimizing Beef Cow-Calf Grazing across Missouri with an Emphasis on Protecting Ecosystem Services

Aide

Braden

Murray

et al. 2021

Land

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Soil health is an emerging paradigm for which much research in row crop agriculture has been undertaken. Research involving grazing lands and soil health has not been as active, a feature partially attributed to (i) greater erosional rates in cropland, (ii) loss of soil organic matter and reduced soil structure attributed to annual tillage practices, (iii) cash flow from cropland is easier to visualize than the value-added nature of grazing lands, and (iv) there exists more competitive grant funding sources for croplands. Grazing lands do require soil quality augmentation and investment in soil health to optimize their ecosystem services potential. This manuscript, with an emphasis on beef cattle grazing in the central USA, attempts to survey the literature to (i) identify the influence of grazing on important ecosystem services provided by Mollisols and Alfisols, (ii) develop a listing of soil indicators that may be selected to quantify and credential soil quality, and (iii) develop guidelines that align soil indicators and changes in grazing management to support the restoration of ecosystem services.

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Section: Soil Quality Studies Focusing On Grazed Pasturessupporting

confidence: 60%

Optimizing Beef Cow-Calf Grazing across Missouri with an Emphasis on Protecting Ecosystem Services

Aide

Braden

Murray

et al. 2021

Land

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“…To provide a holistic assessment of surface residue management on long-term sustainability, techniques for combining information from different tests are needed. Karlen and Obrycki (2019) provided on-farm soil health reference values. These values can be used as references values for similar studies.…”

Section: Residue Removal Impact On Soil and Plant Healthmentioning

confidence: 99%

Crop Residue Management Challenges: A Special Issue Overview

Clay

Alverson²,

Johnson

et al. 2019

Agronomy Journal

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W orldwide, crop residue management is a challenge as farmers strive to maintain economic viability, provide food, feed and fiber for their families, and meet long-term production requirements in a changing environment. One strategy for increasing revenue and production per unit of land is to harvest and use crop residues for animal feed or as feedstock for biofuel production (Maw et al., 2019). However, crop residues are also needed to reduce wind and water erosion, and to recycle essential plant nutrients for future crops and provide inputs to sustain soil organic matter. The positive and negative impacts of harvesting crop residues were discussed at an ASA-CSSA-SSSA sponsored workshop on "Crop Residues for Advanced Biofuels". Workshop participants included scientists, corn producers, ethanol producers, and ethanol industry regulators. A summary of the workshop by identifies several consensus points including that:(i) Multiple strategies are needed to produce the required goods and services from our agricultural lands, (ii) Soil erosion is a critical natural resource problem, (iii) Tillage and crop residue management are closely coupled, and (iv) Simulation models are important tools for guiding crop residue management, but to improve model predictions, coordinated effort and multi-location, long-term data sets are needed.The remainder of this special issue expands those initial workshop discussions, which intentionally focused on the U.S. Corn Belt, to encompass crop residue experiments from around the world. Therefore, paper contributions have been grouped into four general categories focusing on (i) estimating current amount of residue removed, (ii) assessing residue removal impacts on soil and plant health, (iii) identifying cultural practices to improve soil health, and (iv) quantifying cultural practice impacts on GHG emissions.This introduction provides a short over view of the significant findings associated with each paper contribution. This special issue also builds on Qin et al. (2018), where the CENTURY model was used to assess the impact of harvesting corn (Zea mays) leaves and stalk (stover) on greenhouse gas emissions. The

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“…Within the diversity of the approaches developed, there is an agreement on the existence of a series of basic steps in the evaluation of soil quality, among which the selection of appropriate indicators stands out for its special relevance [22]. Global reviews of these indicators [22][23][24] point out the most frequently proposed ones as those related to the organic fraction and soil reaction, together with those referring to the status of some nutrients, porosity (density), and water retention.…”

Section: Introductionmentioning

confidence: 99%

Soil Quality Assessment after 25 Years of Sewage Sludge vs. Mineral Fertilization in a Calcareous Soil

Simões‐Mota

Poch

Enrique

et al. 2021

Land

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The aim of this work was to identify the most sensitive soil quality indicators and assess soil quality after long-term application of sewage sludge (SS) and conventional mineral fertilization for rainfed cereal production in a sub-humid Mediterranean calcareous soil. The treatments included six combinations of SS at different doses (40 t ha−1 and 80 ha−1) and frequencies (every 1, 2 and 4 years), plus a control with mineral fertilization, and a baseline control without fertilization. Twenty-five years after the onset of the experiment, 37 pre-selected physical, chemical and biological soil parameters were measured, and a minimum data set was determined. Among these indicators, those significantly affected by treatment and depth were selected as sensitive. A principal component analysis (PCA) was then performed for each studied depth. At 0–15 cm, PCA identified three factors (F1, F2 and F3), and at 15–30 cm, two factors (F4 and F5) that explained 71.5% and 67.4% of the variation, respectively, in the soil parameters. The most sensitive indicators (those with the highest correlation within each factor) were related to nutrients (P and N), organic matter, and trace metals (F1 and F4), microporosity (F2), earthworm activity (F3), and exchangeable cations (F5). Only F3 correlated significantly (and negatively) with yield. From these results, we concluded that soil quality can be affected in opposite directions by SS application, and that a holistic approach is needed to better assess soil functioning under SS fertilization in this type of agrosystem.

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Measuring Rotation and Manure Effects in an Iowa Farm Soil Health Assessment

Cited by 9 publications

References 61 publications

Optimizing Beef Cow-Calf Grazing across Missouri with an Emphasis on Protecting Ecosystem Services

Optimizing Beef Cow-Calf Grazing across Missouri with an Emphasis on Protecting Ecosystem Services

Crop Residue Management Challenges: A Special Issue Overview

Soil Quality Assessment after 25 Years of Sewage Sludge vs. Mineral Fertilization in a Calcareous Soil

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