Residue Management Practice Effects on Soil Surface Properties in a Young Wheat-Soybean Double-Crop System

Brye, Kristofor R.; Cordell, M. L.; Longer, D. E.; Gbur, Edward E.

doi:10.1300/j064v29n02_09

Cited by 42 publications

(54 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, root activity is also an important factor in total CO 2 production (Chen et al, 2005). In the mid-South USA, Brye et al (2006) studied SOM dynamics in a wheat-soybean double crop system for a range of wheat residue management scenarios. Their data showed that SOM, along with total N and C concentrations, increased with NT at one of the two locations in east-central Arkansas but not in the other.…”

Section: Promise and Challenge Of No-till Farmingmentioning

confidence: 99%

Soils and food sufficiency. A review

Lal

2009

Agron. Sustain. Dev.

191

View full text Add to dashboard Cite

-Soil degradation, caused by land misuse and soil mismanagement, has plagued humanity since the dawn of settled agriculture. Many once thriving civilizations collapsed due to erosion, salinization, nutrient depletion and other soil degradation processes. The Green Revolution of the 1960s and 1970s, that saved hundreds of millions from starvation in Asia and elsewhere, by-passed Sub-Saharan Africa. This remains the only region in the world where the number of hungry and food-insecure populations will still be on the increase even by 2020. The serious technological and political challenges are being exacerbated by the rising energy costs. Resource-poor and small-size land-holders can neither afford the expensive input nor are they sure of their effectiveness because of degraded soils and the harsh, changing climate. Consequently, crop yields are adversely impacted by accelerated erosion, and depletion of soil organic matter (SOM) and nutrients because of the extractive farming practices. Low crop yields, despite growing improved varieties, are due to the severe soil degradation, especially the low SOM reserves and poor soil structure that aggravate drought stress. Components of recommended technology include: no-till; residue mulch and cover crops; integrated nutrient management; and biochar used in conjunction with improved crops (genetically modified, biotechnology) and cropping systems, and energy plantation for biofuel production. However, its low acceptance, e.g. for no-till farming, is due to a range of biophysical, social and economic factors. Competing uses of crop residues for other needs is among numerous factors limiting the adoption of no-till farming. Creating another income stream for resource-poor farmers, through payments for ecosystem services, e.g., C sequestration in terrestrial ecosystems, is an important strategy for promoting the adoption of recommended technologies. Adoption of improved soil management practices is essential to adapt to the changing climate, and meeting the needs of growing populations for food, fodder, fuel and fabrics. Soil restoration and sustainable management are essential to achieving food security, and global peace and stability.food security / soil restoration / sustainable development / soil degradation / conservation agriculture / no-till farming / biochar / integrated nutrient management

show abstract

Section: Promise and Challenge Of No-till Farmingmentioning

confidence: 99%

Soils and food sufficiency. A review

Lal

2009

Agron. Sustain. Dev.

191

View full text Add to dashboard Cite

show abstract

“…Brye et al (2006) reported that tillage management had no effect on soil pH and EC. However, Govaerts et al (2007) reported that the conductivity in soil decreased under permanent beds compared to conventional beds.…”

Section: Soil Characteristicsmentioning

confidence: 99%

The effect of different tillage and residue management practices on soil characteristics, inorganic N dynamics and emissions of N2O, CO2 and CH4 in the central highlands of Mexico: a laboratory study

et al. 2008

View full text Add to dashboard Cite

Conservation agriculture in its version of permanent raised bed planting with crop residue retention increases yields and improves soil characteristics, e.g. aggregate distribution, organic matter content, so it remained to be seen how greenhouse gas emissions and dynamics of C and N might be altered. The objective of this study was to investigate how conservation agriculture with permanent raised beds, tied ridges, i.e. dykes within the furrows to prevent water run-off, and residue retention affected greenhouse gas emissions. A field experiment was started in 1999 comparing permanent and conventionally tilled raised beds with different residue management under rain fed conditions. Soil was characterized and emissions of CH 4 , N 2 O and CO 2 and dynamics of NH 4 + , NO 2 − and NO 3 − were monitored in a laboratory experiment. The crop and tied ridges had no effect on soil characteristics and dynamics of C and N. Tilled beds reduced the water holding capacity (WHC) 1.1 times and increased conductivity 1.3 times compared to soil under nontilled beds with retention of all crop residues. The WHC, organic C, soil microbial biomass and total N were ≥1.1 larger in soil from nontilled beds where the crop residue was retained compared to where it was removed after only 6 years. The emission of CO 2 was 1.2 times and production of NO 3 − 1.8 times larger in nontilled beds where the crop residue was retained compared to where it was removed. The CO 2 emission was 1.2 times and the emission of N 2 O after 1 day 2.3 times larger in soil under tilled beds compared to nontilled beds with full residue retention, while the increase in concentration of NO 3 − was 0.05 mg N kg −1 soil in the former and 2.38 in the latter. We found that permanent raised bed planting with crop residue retention decreased emissions of N 2 O and CO 2 compared to soil under conventionally tilled raised beds. Production of NO 3 − is larger in soil with permanent raised bed planting with crop residue retention compared to conventionally tilled raised beds.

show abstract

“…At present, it is widely recognized that conservation tillage results in the depth stratification of many soil properties, such as SOC (Franzluebbers, 2002;Brye et al, 2007), soil structure (Mrabet, 2002), soil microbial biomass (Melero et al, 2009) and enzyme activities (Sá and Lal, 2009). However, only few reports have considered the effects of different straw incorporation rates on the stratification of the SOC relative to the soil total nitrogen (STN) ratio (C:N), particularly in semiarid areas.…”

Section: Introductionmentioning

confidence: 99%