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Soils, where food begins: how can soils continue to sustain the growing need for food production in the current fertilizer crisis?

ITPS Soil Letters #6










Full ITPS soil letters series

Last updated 14/02/2023



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    Biochar in sustainable soil management: potential and constraints
    ITPS Soil Letters #8
    2023
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    Biochar, derived from the pyrolysis of organic materials, is a decomposure-resistant soil amendment that enhances fertility, boosts agricultural productivity, and sequesters carbon in the soil for thousands of years. Its positive effects include improved nutrient availability, increased pH, and enhanced water retention capacity. Biochar can reduce nutrient losses, improve soil health, and mitigate greenhouse gas emissions. While its effectiveness may vary, targeted application could be a promising strategy, taking into account factors such as soil type and specific environmental conditions.
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    A call to protect the world’s food basket: black soils
    ITPS Soil Letters #7
    2023
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    Black soils have played a crucial role in global agriculture for many decades, supporting the production of cereals, tuber crops, oilseeds, pastures, and forage systems. Despite covering only 5.6 percent of the global land area, these soils not only provide sustenance for the 223 million people residing on them but also contribute to the global economy through the export of various commodities. However, this invaluable resource is facing multiple threats due to land use changes, unsustainable management practices, and excessive use of agrochemicals. Most black soils have already lost at least half of their carbon stocks, suffer from moderate to severe erosion, nutrient imbalances, acidification, compaction, and loss of soil biodiversity. This ITPS letter emphasizes the need for independent policies and agricultural development programs to address these threats. It highlights the importance of adopting good practices and cropping systems, and proposes a series of actions and recommendations to ensure the sustainable use of black soils.
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    Journal, magazine, bulletin
    Urbanisation and soil sealing
    ITPS Soil Letters #5
    2022
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    An important service provided by soils is the support of human settlements, structures and infrastructures. However, once urbanised, soils are usually deeply affected, and often experience the loss of many soil functions, such as the ability to support plant growth and water infiltration, store organic carbon and host biodiversity. The objective of this letter is to draw attention to the issues related to soil sealing and urbanisation, and to provide a brief discussion of what actions need to be taken to prevent excessive loss of soil ecosystem functions and services due to urban development.

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