No-dig gardening

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No-dig gardening is a non-cultivation method used by some organic gardeners.

Contents

This technique recognizes that micro- and macro-biotic organisms constitute a "food web" community in the soil, necessary for the healthy cycling of nutrients and prevention of problematic organisms and diseases. [1] The plants transfer a portion of the carbon energy they produce to the soil, and microbes that benefit from this energy in turn convert available organic substances in the soil to the mineral components the plants need to thrive. [2]

History

The origins of no-dig gardening are unclear, and may be based on pre-industrial or nineteenth-century farming techniques. [3] Masanobu Fukuoka started his pioneering research work in this domain in 1938, and began publishing in the 1970s his Fukuokan philosophy of "do-nothing farming" or natural farming, which is now acknowledged by some as the tap root of the permaculture movement. [4]

Two pioneers of the method in the twentieth century included F. C. King, Head Gardener at Levens Hall, South Westmorland, in the Lake District of England, who wrote the book "Is Digging Necessary?" in 1946, and a gardener from Middlecliffe in the UK, A. Guest, who in 1948 published the book "Gardening Without Digging". The work of these gardeners was supported by the Good Gardeners Association in the UK. [3] No-dig gardening was also promoted by Australian Esther Deans in the 1970s, and American gardener Ruth Stout advocated a "permanent" garden mulching technique in Gardening Without Work and no-dig methods in the 1950s and 1960s. [5]

Purpose

Historically, the reasons for tilling the soil are to remove weeds, loosen and aerate the soil, and incorporate organic matter such as compost or manure into lower soil layers. In areas with thin soil and high erosion, there is a strong case against digging, which argues that in the long term it can be detrimental to the food web in the fragile topsoil.

While digging is an effective way of removing perennial weed roots, it also often causes seeds that can remain dormant for many decades to come to the surface and germinate. The act of aerating the soil also increases the rate of decomposition and reduces soil organic matter. [6] Digging can also damage soil structure, causing compaction, and unbalance symbiotic and mutualist interactions among soil life. Digging tends to displace nutrients, shifting surface organic material deeper, where there is less oxygen to support the decomposition of plant-available nutrients, which then need to be otherwise replenished. Digging is practised traditionally in regions with old, deep, rich soils such as Western Europe, where digging was followed by periodic resting of the soil, usually with an undisturbed cover crop.

Methods

Mandala permaculture.jpg

No-dig methods allow nature to carry out cultivation operations. Organic matter such as well rotted manure, compost, leaf mold, spent mushroom compost, old straw, etc., is added directly to the soil surface as a mulch at least 5-15 centimeters (2–6 in) deep, which is then incorporated by the actions of worms, insects and microbes. Worms and other soil life also assist in building up the soil's structure, their tunnels providing aeration and drainage, and their excretions bind together soil crumbs. This natural biosphere maintains healthy conditions in the upper soil horizons, where annual plant roots thrive. No-dig systems are said by practitioners such as Charles Dowding to be freer of pests and disease, possibly due to a more balanced soil population being allowed to build up in this undisturbed environment, and by encouraging the buildup of beneficial rather than harmful soil fungi. Moisture is also retained more efficiently under mulch than on the surface of bare earth, allowing slower percolation and less leaching of nutrients. [7]

Another no-dig method is sheet mulching wherein a garden area is covered with wetted paper or cardboard, compost and topped off with landscape mulch. This technique is also called lasagna gardening. [8]

A no-dig system is considered easier than digging. [9] It is a long term process, and is reliant upon having plentiful organic matter to provide mulch material. It is also helpful to remove any perennial weed roots from the area beforehand, although their hold can be weakened by applying a light-excluding surface layer such as large sheets of cardboard or several thicknesses of spread out newspaper before adding the compost mulch. The newspaper or cardboard should be thoroughly wet to help it lie flat and keep it from blowing away until the overlying material is added.

Practice

Australia

Esther Deans wrote the books No-Dig Gardening and Leaves of Life. She actively travelled to teach about this gardening method, cooking and promoting raised gardens for those with special needs. She also taught about the necessity to maintain excellent water quality. Deans continued gardening until the age of 95. Around this time, Harper Collins publishers held a special honorary event for her in their Ryde offices, as Esther had become Australia's most published author. As Deans grew older, she was assisted by Lucinda Bartram who helped her carry on the tradition of teaching no-dig gardening methods to others. Between the mid 1990s and 2009 Bartram, from Bondi and then Randwick, helped Deans reach the public and maintained the prolific 'no-dig' flowerbeds kept by Deans around her nursing apartment in the northern Sydney suburb of Waitara. The women shared many years co-teaching 'no-dig' gardening techniques to school children and freely sharing their knowledge together at garden fairs until 2009.

Esther Deans inspired many famous gardeners, including Bill Mollison of the permaculture movement, although she said "it is not quite how I would do it", implying she did not allow nature to take over, but retained formality with strict garden edges and more annuals.

Gardens fashioned on Esther Deans' no dig gardening principles include Randwick Community Organic Garden (RCOG), Sydney, New South Wales, Australia.

UK

Since 1982 Charles Dowding has been practising no dig in his market gardens, on areas ranging from a quarter to seven acres. He has written eleven books on gardening organically and without digging, and gives regular talks and courses on the subject. His methods centre on using compost as a mulch, rather than unrotted organic matter which tends to accumulate slugs in the damp, British climate. He encourages gardeners to be adaptable in their approach, according to local soil, conditions and crops grown. His own speciality is salad leaves for sale to local outlets and the plants grow well in undisturbed soil. [10]

See also

Related Research Articles

<span class="mw-page-title-main">Compost</span> Mixture used to improve soil fertility

Compost is a mixture of ingredients used as plant fertilizer and to improve soil's physical, chemical, and biological properties. It is commonly prepared by decomposing plant and food waste, recycling organic materials, and manure. The resulting mixture is rich in plant nutrients and beneficial organisms, such as bacteria, protozoa, nematodes, and fungi. Compost improves soil fertility in gardens, landscaping, horticulture, urban agriculture, and organic farming, reducing dependency on commercial chemical fertilizers. The benefits of compost include providing nutrients to crops as fertilizer, acting as a soil conditioner, increasing the humus or humic acid contents of the soil, and introducing beneficial microbes that help to suppress pathogens in the soil and reduce soil-borne diseases.

<span class="mw-page-title-main">Permaculture</span> Approach to agriculture and land management

Permaculture is an approach to land management and settlement design that adopts arrangements observed in flourishing natural ecosystems. It includes a set of design principles derived using whole-systems thinking. It applies these principles in fields such as regenerative agriculture, town planning, rewilding, and community resilience. The term was coined in 1978 by Bill Mollison and David Holmgren, who formulated the concept in opposition to modern industrialized methods, instead adopting a more traditional or "natural" approach to agriculture.

<span class="mw-page-title-main">Vermicompost</span> Product of the composting process using various species of worms

Vermicompost (vermi-compost) is the product of the decomposition process using various species of worms, usually red wigglers, white worms, and other earthworms, to create a mixture of decomposing vegetable or food waste, bedding materials, and vermicast. This process is called vermicomposting, with the rearing of worms for this purpose is called vermiculture.

<span class="mw-page-title-main">Outline of organic gardening and farming</span> Overview of and topical guide to organic gardening and farming

The following outline is provided as an overview of and topical guide to organic gardening and farming:

Vegan organicagriculture is the organic production of food and other crops with minimal animal inputs. Vegan organic agriculture is the organic form of animal-free agriculture.

<span class="mw-page-title-main">Green manure</span> Organic material left on an agricultural field to be used as a mulch or soil amendment

In agriculture, a green manure is a crop specifically cultivated to be incorporated into the soil while still green. Typically, the green manure's biomass is incorporated with a plow or disk, as is often done with (brown) manure. The primary goal is to add organic matter to the soil for its benefits. Green manuring is often used with legume crops to add nitrogen to the soil for following crops, especially in organic farming, but is also used in conventional farming.

<span class="mw-page-title-main">Mulch</span> Layer of material applied to the surface of soil

A mulch is a layer of material applied to the surface of soil. Reasons for applying mulch include conservation of soil moisture, improving fertility and health of the soil, reducing weed growth, and enhancing the visual appeal of the area.

Biointensive agriculture is an organic agricultural system that focuses on achieving maximum yields from a minimum area of land, while simultaneously increasing biodiversity and sustaining the soil fertility. The goal of the method is long term sustainability on a closed system basis. It is particularly effective for backyard gardeners and smallholder farmers in developing countries, and also has been used successfully on small-scale commercial farms.

<span class="mw-page-title-main">Organic horticulture</span> Organic cultivation of fruit, vegetables, flowers or ornamental plants

Organic horticulture is the science and art of growing fruits, vegetables, flowers, or ornamental plants by following the essential principles of organic agriculture in soil building and conservation, pest management, and heirloom variety preservation.

A soil conditioner is a product which is added to soil to improve the soil’s physical qualities, usually its fertility and sometimes its mechanics. In general usage, the term "soil conditioner" is often thought of as a subset of the category soil amendments, which more often is understood to include a wide range of fertilizers and non-organic materials. In the context of construction soil conditioning is also called soil stabilization.

This is an alphabetical index of articles related to gardening.

In permaculture, sheet mulching is an agricultural no-dig gardening technique that attempts to mimic the natural soil-building process in forests. When deployed properly and in combination with other permaculture principles, it can generate healthy, productive, and low maintenance ecosystems.

<span class="mw-page-title-main">Potting soil</span> Medium in which to grow plants

Potting soil or growing media, also known as potting mix or potting compost (UK), is a substrate used to grow plants in containers. The first recorded use of the term is from an 1861 issue of the American Agriculturist. Despite its name, little or no soil is usually used in potting soil.

<span class="mw-page-title-main">Ruth Stout</span> American writer (1884–1980)

Ruth Imogen Stout was an American author best known for her "No-Work" gardening books and techniques.

French intensive gardening also known as raised bed, wide bed, or French market gardening is a method of gardening in which plants are grown within a smaller space and with higher yields than other traditional gardening methods. The main principles for success are often listed as soil improvement, raised beds, close spacing, companion planting, succession planting and crop rotation. Originating in France, the practice is very popular among urban gardeners and small for profit farming operations.

<span class="mw-page-title-main">Natural farming</span> Sustainable farming approach

Natural farming, also referred to as "the Fukuoka Method", "the natural way of farming", or "do-nothing farming", is an ecological farming approach established by Masanobu Fukuoka (1913–2008). Fukuoka, a Japanese farmer and philosopher, introduced the term in his 1975 book The One-Straw Revolution. The title refers not to lack of effort, but to the avoidance of manufactured inputs and equipment. Natural farming is related to fertility farming, organic farming, sustainable agriculture, agroecology, agroforestry, ecoagriculture and permaculture, but should be distinguished from biodynamic agriculture.

<span class="mw-page-title-main">Hügelkultur</span> Mounded gardening technique

Hügelkultur, literally mound bed or mound culture, is a horticultural technique where a mound constructed from decaying wood debris and other compostable biomass plant materials is later planted as a raised bed. Considered a permaculture practice, advocates claim that the technique helps to improve soil fertility, water retention, and soil warming, thus benefitting plants grown on or near such mounds.

<span class="mw-page-title-main">Soil regeneration</span>

Soil regeneration, as a particular form of ecological regeneration within the field of restoration ecology, is creating new soil and rejuvenating soil health by: minimizing the loss of topsoil, retaining more carbon than is depleted, boosting biodiversity, and maintaining proper water and nutrient cycling. This has many benefits, such as: soil sequestration of carbon in response to a growing threat of climate change, a reduced risk of soil erosion, and increased overall soil resilience.

Charles Dowding is an English horticulturalist and author who has pioneered modern no dig and organic soil management in the UK since 1983.

References

  1. "Soil Borne Diseases". soilhealth.ucdavis.edu. Retrieved 2023-07-30.
  2. "Michael Rothman, Building Fertile Soil". www.motherearthnews.com. Retrieved 2023-07-30.
  3. 1 2 "A Brief History of No-Dig Gardening Through the Years". empressofdirt.net. Retrieved 2023-07-30.
  4. "Resource: The One-Straw Revolution: An Introduction to Natural Farming". oceanofpdf.com. Retrieved 2023-07-30.
  5. "Ruth Stouts permanent mulch system". goveganic.net. Retrieved 2023-07-30.
  6. "Soil Science". soils.usda.gov. Retrieved 26 May 2023.
  7. "Preston Sullivan, NCAT Agriculture Specialist, Sustainable Soil Management". Archived from the original on 2009-03-05. Retrieved 2009-03-10.
  8. "Gardening: Doing the ground work". NZ Herald. Retrieved 2020-10-27.
  9. Ruth Stout. "Gardening Without Work". www.nortoncreekpress.com. Retrieved 26 May 2023.
  10. "The No Dig Approach". No Dig. Retrieved 2019-01-15.

Bibliography