Soil properties change in no-till tomato production

Herrero, E.V.; Mitchell, J. P.; Lanini, W. Thomas; Temple, S.R.; Miyao, E.M.; Morse, Ronald D.; Campiglia, Enio

doi:10.3733/ca.v055n01p30

Cited by 8 publications

(1 citation statement)

References 7 publications

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“…These practices, however, are rarely adopted in California due to the low erosion potential of the land as well as high intensity multicropping (Mitchell and Miyao 2002). Low-till research is underway and, in the next 10 years, low-till practices may increase for a few specific crops (Herrero et al 2001), potentially affecting future carbon storage.…”

Section: California Agriculturementioning

confidence: 99%

Carbon Sequestration in California Agriculture, 1980–2000

Kroodsma

Field

2006

Ecological Applications

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To better understand agricultural carbon fluxes in California, USA, we estimated changes in soil carbon and woody material between 1980 and 2000 on 3.6 x 10(6) ha of farmland in California. Combining the CASA (Carnegie-Ames-Stanford Approach) model with data on harvest indices and yields, we calculated net primary production, woody production in orchard and vineyard crops, and soil carbon. Over the 21-yr period, two trends resulted in carbon sequestration. Yields increased an average of 20%, corresponding to greater plant biomass and more carbon returned to the soils. Also, orchards and vineyards increased in area from 0.7 x 10(6) ha to 1.0 x 10(6) ha, displacing field crops and sequestering woody carbon. Our model estimates that California's agriculture sequestered an average of 19 g C x m(-2) x yr(-1). Sequestration was lowest in non-rice annual cropland, which sequestered 9 g C x m(-2) x yr(-1) of soil carbon, and highest on land that switched from annual cropland to perennial cropland. Land that switched from annual crops to vineyards sequestered 68 g C x m(-2) x yr(-1), and land that switched from annual crops to orchards sequestered 85 g C x m(-2) x yr(-1). Rice fields, because of a reduction in field burning, sequestered 55 g C x m(-2) x yr(-1) in the 1990s. Over the 21 years, California's 3.6 x 10(6) ha of agricultural land sequestered 11.0 Tg C within soils and 3.5 Tg C in woody biomass, for a total of 14.5 Tg C statewide. This is equal to 0.7% of the state's total fossil fuel emissions over the same time period. If California's agriculture adopted conservation tillage, changed management of almond and walnut prunings, and used all of its orchard and vineyard waste wood in the biomass power plants in the state, California's agriculture could offset up to 1.6% of the fossil fuel emissions in the state.

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Section: California Agriculturementioning

confidence: 99%

Carbon Sequestration in California Agriculture, 1980–2000

Kroodsma

Field

2006

Ecological Applications

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Conservation Agriculture and Climate Change

Pisante

Stagnari

Acutis

et al. 2014

Conservation Agriculture

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This chapther review aims at developing a clear understanding of the impacts and benefits of Conservation Agriculture with respect to Climate Change, and examining if there are any misleading findings at present in the scientific literature. \ud Most of the world’s agricultural soils have been depleted of organic matter and soil health over the years under tillage-based agriculture (TA), compared with their state under natural vegetation. This degradation process can be reversed and the review identifies conditions that can lead to increase in soil organic matter content and improvement in soil health under Conservation Agriculture (CA) practices which involve minimum soil disturbance, maintenance of soil cover, and crop diversity.\ud The review also discusses the need to refer to specific carbon pools when addressing carbon sequestration, as each carbon category has a different turnover rate.\ud With respect to greenhouse gas emissions (GHGs), sustainable agricultural systems based on CA principles are described which result in lower emissions from farm operations as well as from machinery manufacturing processes, and that also help to reduce fertilizer use. \ud This review concludes that terrestrial sequestration of carbon can efficiently be achieved by changing the management of agricultural lands from high soil disturbance TA practices to low disturbance CA practices and by adopting effective nitrogen management practices to provide a positive nitrogen balance for carbon sequestration. However, full advantages of CA in terms of carbon sequestration can usually be observed only in the medium- to longer-term when CA practices and associated carbon sequestration processes in the soil are well established

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