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Brodie, Graham / Gupta, Dorin / Khan, Jamal / Foletta, Sally / Bootes, Natalie

Microwave Based Weed Control and Soil Treatment

Open Access

    Open Access
    eBook (PDF)
    Publication Date:
    2018
    Copyright year:
    2018
    ISBN
    978-3-11-060565-5
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    Overview

    Aims and Scope

    Herbicide resistance has become an important constraint on modern agricultural practices. An alarming increase in weed biotypes that are resistant to herbicides has also been reported. Opportunity exists for a novel weed management technology, which is also compatible with no-till agricultural practices. Microwave heating can kill both emerged weed plants and weed seeds in the soil. When the intensity of the microwave fields is moderate, plants, which have already emerged, are susceptible to microwave treatment. If the microwave field is intense enough, very rapid volumetric heating and some thermal runaway in the plant structures cause micro-steam explosions in the plant cells, which rupture the plant structures, leading to death. Soil treatment requires significantly more energy; however, there are secondary benefits for crops growing in microwave treated soil. These include: significant reduction of the dormant weed seed bank; significant reduction of nematode populations; significant reduction of fungal populations; better availability of indigenous nitrogen for the plants; more rapid humification; and significant increases in crop growth and yield. Microwave weed management and soil treatment is not restricted by weather conditions; therefore, the technology may offer some timeliness and environmental benefits, which are yet to be quantified in a cropping system.

    Details

    Approx. 185 pages
    Language:
    English
    Type of Publication:
    Monograph
    Keyword(s):
    microwave; herbicide resistance; seed bank reduction; weed knockdown; indigenous soil nitrogen release; enhanced crop growth

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    Graham Brodie, Dorin Gupta, Jamal Khan, Sally Foletta, and Natalie Bootes

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