Long-term effects of tillage and fallow-frequency on soil quality attributes in a clay soil in semiarid southwestern saskatchewan

Campbell, C. A.; McConkey, B.G.; Biederbeck, V. O.; Zentner, R. P.; Curtin, D.; Peru, M.

doi:10.1016/s0167-1987(98)00027-0

Cited by 35 publications

(11 citation statements)

References 29 publications

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“…The results of an 11-year experiment reported by Angers et al (1993) showed no in¯uence of tillage system on C O and N T contents at any depth of a silt loam soil. Campbell et al (1998) found that NT helped wheat±fallow to store more nitrogen and carbon than continuous wheat after 11-years of experimentation on a clay soil in southwestern Saskatchewan, Canada. However, in a silt loam of the same region, differences among tillage and cropping systems were not signi®cant in terms of soil nitrogen and carbon.…”

Section: Total Nitrogen N Tmentioning

confidence: 97%

Soil chemical quality changes and implications for fertilizer management after 11 years of no‐tillage wheat production systems in semiarid Morocco

et al. 2001

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A long-term experiment comparing no-till with conventional tillage systems across ®ve rotations was evaluated 11 years after initiation. The objectives of the present paper are (1) to report differences in soil chemical properties (namely soil organic matter, total nitrogen, phosphorus, potassium and pH) that have resulted by converting from conventional to no-till under contrasting cropping systems and (2) to draw tentative conclusions and recommendations on fertility status and fertilizer use and management. Soil in the no-till system had increased surface soil organic C levels relative to conventional tillage regardless of rotation. In addition, depending on the rotation, the N and P content of the soil improved with no-till compared with conventional tillage. In other words, no-till has helped to retain soil organic matter (SOM), conserved more N, and resulted in increased extractable P and exchangeable K concentrations in the upper root-zone. Hence, wheat produced in a no-till system may receive more nutrients from decomposition of SOM and acidi®cation of the seed zone. It is possible that lesser amounts of fertilizer nutrients will be needed because of the greater ef®ciency of nutrient cycling in no-till systems relative to conventional systems.

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Section: Total Nitrogen N Tmentioning

confidence: 97%

Soil chemical quality changes and implications for fertilizer management after 11 years of no‐tillage wheat production systems in semiarid Morocco

et al. 2001

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“…With deep inversion tillage, distribution of organic matter is more uniform throughout the ploughed profile (Kern and Johnson, 1993;Hernanz et al, 2002;Papini et al, 2003). In soils with reduced tillage, an increase in N and P contents along with organic C has been observed (Lal, 1997;Campbell et al, 1998;Diaz-Zorita and Grove, 2002;Zibilske et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…However, the relative magnitude of tillage induced differences in soil chemical properties depends on soil, climate and cropping system. The reduction of ploughing depth with shallow tillage or minimum tillage generally leads to an accumulation of organic matter near the soil surface (Costantini et al, 1996;Campbell et al, 1998). With deep inversion tillage, distribution of organic matter is more uniform throughout the ploughed profile (Kern and Johnson, 1993;Hernanz et al, 2002;Papini et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and phosphorous in a loam soil of central Italy as affected by 6 years of different tillage systems

Papini¹,

Valboa²,

Piovanelli³

et al. 2007

Soil and Tillage Research

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“…In most long-term experiments initiated world-wide to identify suitable soil-management treatments, the main research focus until the end of the 20th Century was to monitor increases in yields and individual changes in predominant soil parameters. For example, research focussed on yield and chemical properties (Malhi et al 2000;Noble and Hurney 2000), soil fertility and yield (Mohammad and Mohammad 1999), yield (Suresh et al 1999;Subbarao et al 2000), physical properties (Unger et al 1998), carbon pools (Campbell et al 1998), chemical soil quality (Eck and Stewart 1998), etc. In order to quantitatively assess the effects of the long-term management systems or practices on the capacity of the soils to function, the soil quality assessment approach has been a paradigm shift (Dalal and Moloney 2000;Andrews and Carroll 2001).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of long-term soil management practices using key indicators and soil quality indices in a semi-arid tropical Alfisol

et al. 2008

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Alfisol soils of rainfed semi-arid tropics (SAT) are degrading due to several physical, chemical, and biological constraints. Appropriate soil-nutrient management practices may help to check further soil degradation. A long-term experiment comprising tillage and conjunctive nutrient use treatments under a sorghum (Sorghum bicolor (L.) Moench)-mung bean (Vigna radiata (L.) Wilkzec) system was conducted during 1998-05 on SAT Alfisols (Typic Haplustalf) at the Central Research Institute for Dryland Agriculture, Hyderabad. The study evaluated soil and nutrient management treatments for their long-term influence on soil quality using key indicators and soil quality indices (SQI). Of the 21 soil quality parameters considered for study, easily oxidisable N (KMnO 4 oxidisable-N), DTPA extractable Zn and Cu, microbial biomass carbon (MBC), mean weight diameter (MWD) of soil aggregates, and hydraulic conductivity (HC) played a major role in influencing the soil quality and were designated as the key indicators of 'soil quality' for this system. The SQI obtained by the integration of key indicators varied from 0.66 (unamended control) to 0.83 (4 Mg compost þ 20 kg N as urea) under conventional tillage (CT), and from 0.66 (control) to 0.89 (4 Mg compost þ 2 Mg gliricidia loppings) under reduced tillage (RT). Tillage did not influence the SQI, whereas the conjunctive nutrient-use treatments had a significant effect. On an average, under both CT and RT, the sole organic treatment improved the soil quality by 31.8% over the control. The conjunctive nutrient-use treatments improved soil quality by 24.2-27.2%, and the sole inorganic treatment by 18.2% over the control. Statistically, the treatments improved soil quality in the following order: 4 Mg compost þ 2 Mg gliricidia loppings > 2 Mg Gliricidia loppings þ 20 kg N as urea = 4 Mg compost þ 20 kg N as urea > 40 kg N as urea. The percentage contribution of the key indicators towards the SQI was: MBC (28.5%), available N (28.6%), DTPA-Zn (25.3%), DTPA-Cu (8.6%), HC (6.1%), and MWD (2.9%). The functions predicting the changes in yield and sustainability yield index with a given change in SQI were also determined.Additional keywords: semi-arid tropics, soil quality indicators, sorghum-mung bean, sustainability yield index.

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Long-term effects of tillage and fallow-frequency on soil quality attributes in a clay soil in semiarid southwestern saskatchewan

Cited by 35 publications

References 29 publications

Soil chemical quality changes and implications for fertilizer management after 11 years of no‐tillage wheat production systems in semiarid Morocco

Soil chemical quality changes and implications for fertilizer management after 11 years of no‐tillage wheat production systems in semiarid Morocco

Nitrogen and phosphorous in a loam soil of central Italy as affected by 6 years of different tillage systems

Evaluation of long-term soil management practices using key indicators and soil quality indices in a semi-arid tropical Alfisol

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