Climatic Gradient, Cropping System, and Crop Residue Impacts on Carbon and Nitrogen Mineralization in No‐Till Soils

2005 ◽  
Vol 36 (19-20) ◽  
pp. 2875-2887 ◽  
Author(s):  
R. A. Ortega ◽  
D. G. Westfall ◽  
G. A. Peterson
Keyword(s):  
Nitrogen Mineralization ◽  
Crop Residue ◽  
Cropping System ◽  
Climatic Gradient ◽  
Carbon And Nitrogen ◽  
No Till

Field evaluation of heat units for predicting crop residue carbon and nitrogen mineralization

1990 ◽  
Vol 125 (2) ◽  
pp. 213-220 ◽  
Author(s):  
C. W. Honeycutt ◽  
L. J. Potaro
Keyword(s):  
Nitrogen Mineralization ◽  
Crop Residue ◽  
Field Evaluation ◽  
Carbon And Nitrogen ◽  
Heat Units

scholarly journals Soil aggregation and potential carbon and nitrogen mineralization with cover crops under tropical no-till

2020 ◽  
Vol 75 (5) ◽  
pp. 601-609 ◽  
Author(s):  
J.P.G. Rigon ◽  
A.J. Franzluebbers ◽  
J.C. Calonego
Keyword(s):  
Nitrogen Mineralization ◽  
Cover Crops ◽  
Soil Aggregation ◽  
Carbon And Nitrogen ◽  
No Till ◽  
Potential Carbon

scholarly journals Tillage, Crop Rotation and Crop Residue Management Effects on Nutrient Availability in a Sweet Sorghum-Based Cropping System in Marginal Soils of South Africa

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 776 ◽  
Author(s):  
Mashapa E. Malobane ◽  
Adornis D. Nciizah ◽  
Fhatuwani N. Mudau ◽  
Isaiah I.C Wakindiki
Keyword(s):  
Soil Fertility ◽  
Nutrient Availability ◽  
Sweet Sorghum ◽  
Crop Residue ◽  
Cropping System ◽  
Residue Management ◽  
Crop Residue Management ◽  
No Till ◽  
Marginal Soils ◽  
Residue Retention

The low soil fertility status of South African marginal soils threatens sustainable production of biofuel feedstock in smallholder farmers. It is therefore imperative to development sustainable and optimal management practices that improve soil fertility. The objective of this study was to determine the effect of tillage, rotation and crop residue management on nutrient availability in a bioenergy sweet sorghum-based cropping system in marginal soils. Two tillage levels, no-till (NT) and conventional tillage (CT); two crop rotations, sweet sorghum–grazing vetch–sweet sorghum (SVS) and sweet sorghum–fallow–sweet sorghum (SFS); and three crop residue retention levels, 0%, 15% and 30%, were tested. No-till enhanced total nitrogen, total organic nitrogen (TON), magnesium (Mg) and sodium (Na) by 3.19% to 45% compared to CT. SVS rotation increased ammonium (NH4+-N) and nitrate (NO3−-N) by 3.42% to 5.98% compared to SFS. A 30% crop residue retention increased NH4+-N, NO3−-N, available phosphorus (Available P), cation exchange capacity (CEC), calcium (Ca), Mg and potassium (K) by 3.58% to 31.94% compared to crop residue removal. In the short term, a 30% crop residue retention was the main treatment that enhanced soil fertility. The application of NT−30% was a better practice to enhance soil fertility. However, research on inclusion of crop diversity/intercropping can add more value to the NT–30% practice in enhancing soil fertility.

scholarly journals Long-term cropping system studies support intensive and responsive cropping systems in the low-rainfall Australian Mallee

2015 ◽  
Vol 66 (6) ◽  
pp. 553 ◽  
Author(s):  
A. M. Whitbread ◽  
C. W. Davoren ◽  
V. V. S. R. Gupta ◽  
R. Llewellyn ◽  
the late D. Roget
Keyword(s):  
Crop Residue ◽  
Field Experiments ◽  
Cropping Systems ◽  
Cropping System ◽  
Continuous Cropping ◽  
Gross Margin ◽  
No Till ◽  
Residue Retention ◽  
Term Field

Continuous-cropping systems based on no-till and crop residue retention have been widely adopted across the low-rainfall cereal belt in southern Australia in the last decade to manage climate risk and wind erosion. This paper reports on two long-term field experiments that were established in the late 1990s on texturally different soil types at a time of uncertainty about the profitability of continuous-cropping rotations in low-rainfall environments. Continuous-cereal systems significantly outyielded the traditional pasture–wheat systems in five of the 11 seasons at Waikerie (light-textured soil), resulting in a cumulative gross margin of AU$1600 ha–1 after the initial eight seasons, almost double that of the other treatments. All rotation systems at Kerribee (loam-textured soil) performed poorly, with only the 2003 season producing yields close to 3 t ha–1 and no profit achieved in the years 2004–08. For low-rainfall environments, the success of a higher input cropping system largely depends on the ability to offset the losses in poor seasons by capturing greater benefits from good seasons; therefore, strategies to manage climatic risk are paramount. Fallow efficiency, or the efficiency with which rainfall was stored during the period between crops, averaged 17% at Kerribee and 30% at Waikerie, also indicating that soil texture strongly influences soil evaporation. A ‘responsive’ strategy of continuous cereal with the occasional, high-value ‘break crop’ when seasonal conditions are optimal is considered superior to fixed or pasture–fallow rotations for controlling grass, disease or nutritional issues.

Differences in carbon and nitrogen mineralization in soils of differing initial pH induced by electrokinesis and receiving crop residue amendments

2013 ◽  
Vol 67 ◽  
pp. 70-84 ◽  
Author(s):  
Kongcao Xiao ◽  
Jianming Xu ◽  
Caixian Tang ◽  
Jiabao Zhang ◽  
Philip C. Brookes
Keyword(s):  
Nitrogen Mineralization ◽  
Crop Residue ◽  
Carbon And Nitrogen ◽  
Initial Ph

Impacts of Cropping Intensity on Carbon and Nitrogen Mineralization under No‐Till Dryland Agroecosystems

1990 ◽  
Vol 82 (6) ◽  
pp. 1115-1120 ◽  
Author(s):  
C. W. Wood ◽  
D. G. Westfall ◽  
G. A. Peterson ◽  
I. C. Burke
Keyword(s):  
Nitrogen Mineralization ◽  
Cropping Intensity ◽  
Carbon And Nitrogen ◽  
No Till

Carbon and Nitrogen Mineralization Dynamics: A Perspective in Rice-Wheat Cropping System

2019 ◽  
pp. 463-498 ◽  
Author(s):  
Kirti Saurabh ◽  
Rakesh Kumar ◽  
J. S. Mishra ◽  
Hansraj Hans ◽  
Narendra Kumawat ◽  
...  
Keyword(s):  
Nitrogen Mineralization ◽  
Cropping System ◽  
Carbon And Nitrogen
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