Responses of sunflower to traditional and conservation tillage under rainfed conditions in southern Spain

Murillo, J.M.; Moreno, F.; Pelegrín, F.; Fernández, J.E.

doi:10.1016/s0167-1987(98)00177-9

Cited by 36 publications

(24 citation statements)

References 21 publications

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“…However, in the deepest horizon (20-30 cm), no significant difference of SOCc has been observed between the CT and NT systems. The same findings under similar semiarid Mediterranean conditions were reported by Murillo et al [44], Moreno et al [45], and Lozano-García and Parras-Alcántara [46].…”

Section: Soil Organic Carbon Content (Socc)supporting

confidence: 88%

Tillage System Affects Soil Organic Carbon Storage and Quality in Central Morocco

Moussadek

Mrabet

Dahan

et al. 2014

Applied and Environmental Soil Science

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Stabilizing or improving soil organic carbon content is essential for sustainable crop production under changing climate conditions. Therefore, soil organic carbon research is gaining momentum in the Mediterranean basin. Our objective is to quantify effects of no tillage (NT) and conventional tillage (CT) on soil organic carbon stock (SOCs) in three soil types (Vertisol, Cambisol, and Luvisol) within Central Morocco. Chemical analyses were used to determine how tillage affected various humic substances. Our results showed that, after 5 years, surface horizon (0-30 cm) SOC stocks varied between tillage systems and with soil type. The SOCs was significantly higher in NT compared to CT (10% more in Vertisol and 8% more in Cambisol), but no significant difference was observed in the Luvisol. Average SOCs within the 0-30 cm depth was 29.35 and 27.36 Mg ha −1 under NT and CT, respectively. The highest SOCs (31.89 Mg ha −1 ) was found in Vertisols under NT. A comparison of humic substances showed that humic acids and humin were significantly higher under NT compared to CT, but fulvic acid concentrations were significantly lower. These studies confirm that NT does have beneficial effects on SOCs and quality in these soils.

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Section: Soil Organic Carbon Content (Socc)supporting

confidence: 88%

Tillage System Affects Soil Organic Carbon Storage and Quality in Central Morocco

Moussadek

Mrabet

Dahan

et al. 2014

Applied and Environmental Soil Science

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“…Nonetheless, adoption of conservation tillage and mulch farming techniques can lead to improvement in the SOC pool. Experiments conducted in southern Spain by Murillo et al (1998) demonstrated that conservation tillage was effective in increasing SOC content. Conservation tillage for sun¯ower cultivation was adopted in 1993.…”

Section: Carbon Sequestration In Dryland Ecosystemsmentioning

confidence: 99%

Carbon sequestration in dryland ecosystems of West Asia and North Africa

Lal

2002

Land Degrad Dev

143

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The West Asia±North Africa (WANA) region has a land area of 1Á7 billion ha, and a population of 600 million. Deserti®cation and soil degradation are severe problems in the region. The problem of drought stress is exacerbated by low and erratic rainfall and soils of limited available water holding capacity and a soil organic carbon (SOC) content of less than 0Á5 per cent. The SOC pool of most soils has been depleted by soil degradation and widespread use of subsistence and exploitative farming systems. The historic loss of a SOC pool for the soils of the WANA region may be 6±12 Pg compared with the global loss of 66±90 Pg. Assuming that 60 per cent of the historic loss can be resequestered, the total soil-C sink capacity of the WANA region may be 3±7 Pg. This potential may be realized through adoption of measures to control deserti®cation, restore degraded soils and ecosystems, and improve soil and crop management techniques that can enhance the SOC pool and improve soil quality. The strategies of soil C sequestration include integrated nutrient management (INM) and recycling, controlled grazing, and growing improved fodder species on rangeland. Improved technologies for cropland include use of INM and biofertilizers, appropriate tillage methods and residue management techniques, crop rotations and cover crops, and water and nutrient recycling technologies. Through adoption of such measures, the potential of soil-C sequestration in the WANA region is 0Á2±0Á4 Pg C yr À1.

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“…Kihani et al, (1984) conducted soil analyses on a 45-year old tillage experiment and reported that incorporation of biosolids improved SOC concentration. Murillo et al, (1998) reported that SOC concentration in 0 to 5 cm depth was 0.84% in traditional tillage and 1.1% in conservation tillage after 2 years, and 0.89% in traditional tillage compared with 1.34% in conservation tillage after 4 years. Holland (2004) gives the interactive processes as a consequence; conservation agriculture generate the soil's structural stability and have a substantial impact on the environment (Fig 4).…”

Section: Conservation Agriculturementioning

confidence: 99%