Cover crops in perennial agriculture (#journal)

Cover crops to increase soil microbial diversity and mitigate decline in perennial agriculture. A review

 

Perennial agriculture is prone to declining productivity due to negative plant-soil feedback. Although cover crops are already used in these systems for other reasons, their capacity to influence soil biota is unexploited. This article examines the role of plant diversity and identity on plant-soil feedback. We conclude that (1) increasing plant diversity increases soil microbial diversity, minimizing the proliferation of soil-borne pathogens; (2) populations of beneficial microbes can be increased by increasing plant functional group richness, (3) brassicas suppress fungal pathogens and promote disease-suppressive bacteria; (4) native plants may further promote beneficial soil microbiota; and (5) frequent tillage, herbicide use, and copper fungicides can harm populations of beneficial microbes. Non-crop vegetation management is a viable and cost-effective means of minimizing crop decline in perennial monocultures.

Coffee agroforestry management (#journal)

Agroforestry coffee production increased by native shade trees, irrigation, and liming

Agroforestry systems usually include shade trees, providing a large diversity of fauna and flora. Shade trees are, however, being removed to increase crop production in many tropical regions. We evaluated the importance of shade tree management for crop production in the context of management practices. Management practices included fertilization, liming, coffee pruning, weeding, and irrigation in 113 coffee agroforests in Kodagu, India. Results show that a rise of 100 shade tree per hectare increased production of berries by 5.6 % and bean size by 6.25 %. Irrigation and liming increased berry production respectively by 16 and 20 %. These management interventions offset the relatively small effect of reducing shade density.

The Hidden life of Trees (book)

The Hidden Life of Trees: What They Feel, How They Communicate-Discoveries from a Secret World

 Are trees social beings? In this international bestseller, forester and author Peter Wohlleben convincingly makes the case that, yes, the forest is a social network. He draws on groundbreaking scientific discoveries to describe how trees are like human families: tree parents live together with their children, communicate with them, support them as they grow, share nutrients with those who are sick or struggling, and even warn each other of impending dangers. Wohlleben also shares his deep love of woods and forests, explaining the amazing processes of life, death, and regeneration he has observed in his woodland. After learning about the complex life of trees, a walk in the woods will never be the same again.

Rooftop production of vegetables (#journal)

Rooftop production of leafy vegetables can be profitable and less contaminated than farm-grown vegetables

Urban agriculture may solve issues of feeding urban populations. It has been estimated that the total rooftop space in China is about 1 million hectares, some of which can be converted for rooftop farming. This article present here a feasibility study of hydroponically grown vegetables in a rooftop screen house in Guangzhou, China. None of the roof hydroponic vegetables exceeded the maximum residue limit for lead, arsenic, cadmium, chromium, mercury, or nitrate. In contrast, 5 of 98 market vegetables were contaminated by exceeding the maximum residue limit for lead. Similarly 3 were contaminated for arsenic, 23 for nitrate, and 2 for organophosphate or carbamate insecticide. Compared to high-end vegetables sold on the market, rooftop-grown vegetables were competitive in cost and quality. Given that many countries have limited arable land to feed a large population, the widespread adoption of rooftop hydroponics could help expand the total area available for food production.

Crop-livestock integration betwen farms (#journal)

Crop–livestock integration beyond the farm level: a review

Paradoxically, the number of crop–livestock farms is declining across Europe, despite the fact that crop-livestock farms are optimal to the sustainability of agriculture. To solve this issue, crop–livestock integration may be organized beyond the farm level. For instance, local groups of farmers can negotiate land-use allocation patterns and exchange materials such as manure, grain, and straw. Development of such a collective agricultural system raises questions about how to integrate crops and livestock among farms, and the consequences, impacts, and conditions of integrating them. This article reviews the different forms of crop–livestock integration beyond the farm level, their potential benefits, and the features of decision support systems (DSS) needed for the integration process.

A toolkit for developing forest gardens (thesis)

Facilitating Temperate Forest Garden Development (MSc Thesis)

Forest gardens are spreading around the temperate world with a diversity of goals, strategies and spatial structures as practitioners implement these needed systems. Tools and frameworks to advance the research of forest garden methods are a basic requirement. A toolbox booklet was developed through participatory action research. Gardens in the UK and Denmark were studied. The final output is the Forest Garden Archetype booklet, created through participatory action research and showing tools that may be used to strengthen the forest garden discipline.

Here is a direct link to the booklet itself: http://permakultur-danmark.dk/wp-content/uploads/2012/11/FGA-Booklet.-Annex-1.pdf

Macro-economics for permaculture (report)

Regenerative Capitalism: How universal principles and patterns will shape our new economy

For the past few years, Capital Institute has been on an evolutionary learning journey…searching for a path that will lead beyond our current unsustainable economic system and the finance-dominated ideology that drives it. They call it Regenerative Capitalism. Ex-Wall Street economist John Fullerton writes in his introduction:

'My most startling discovery  was that the modern scheme of economics and finance formed the root cause of these systemic crises. My struggle to find a credible alternative framework for economics and finance sharpened my interest in the intellectual and scientific underpinnings of “systemic” or “holistic” approaches. I began by studying how we might apply the lessons of living systems to economic systems...I then discovered that scientists were turning the rules by which living systems sustain and regenerate themselves into empirical principles of systemic health and development, which applied as much to nonliving systems, including economies, as to ecosystems and living organisms.'