Facebook Twitter The State of World Fisheries and Aquaculture 2014. Expanded clay aggregate. Cross section of clay pebbles Hydroton brand expanded clay pebbles A pile of expanded clay pebbles on Hisingen, Göteborg, Sweden With the advantage of light weight, high permeability, high durability and excellent sound and thermal insulating properties, expanded clay is a good 'all round' aggregate for use in an a variety of applications.

Expanded clay aggregate Agaricus campestris. Agaricus campestris is commonly known as the field mushroom or, in North America, meadow mushroom.

Agaricus campestris

It is a widely eaten gilled mushroom closely related to the cultivated button mushroom Agaricus bisporus. Taxonomy[edit] Description[edit] Distribution and habitat[edit] Agaricus campestris is common in fields and grassy areas after rain from late summer onwards worldwide. Mushroom Observer: Image: Agaricus campestris L. (340999)

Urban Farms

Gardening. Farm design. The Agricultural Revolution: Crash Course World History #1. Sugar industry's bitter pill. "We are losing R50-million a month because sugar is being imported into South Africa.

Sugar industry's bitter pill

"This [imported] sugar is below the cost of production globally," SA Sugar Association chairman Bongani Linda yesterday told Minister of Rural Development and Land Reform Gugile Nkwinti. Earlier this year, the industry said it was in crisis as imports, particularly from Brazil, displaced its product and forced it to export its surplus at a poor price. "This year imports, especially from Brazil, are close to 400000t. It is about 17% of the demand and is equal to the production of three [South African sugar] mills. World changing technology enables crops to take nitrogen from the air. A major new technology has been developed by The University of Nottingham, which enables all of the world's crops to take nitrogen from the air rather than expensive and environmentally damaging fertilisers.

World changing technology enables crops to take nitrogen from the air

Nitrogen fixation, the process by which nitrogen is converted to ammonia, is vital for plants to survive and grow. However, only a very small number of plants, most notably legumes (such as peas, beans and lentils) have the ability to fix nitrogen from the atmosphere with the help of nitrogen fixing bacteria. Home » Natural nitrogen to boost agriculture. Open-source GMOs to fight climate change and take down Monsanto. Photo by Nigel Treblin/AFP/Getty Images This article arises from Future Tense, a collaboration among Arizona State University, the New America Foundation, and Slate.

Open-source GMOs to fight climate change and take down Monsanto

On July 25, Future Tense will be hosting an event on agriculture’s role in climate change at the New America Foundation in Washington, D.C. For more information and to RSVP, visit the New America Foundation website. Not too long ago, popular wisdom ran that molecular biologists were going to save billions of people from starvation by genetically engineering crops resistant to flood, freeze, and drought; crops that could blossom from desiccated soil and bloom in salty sand; crops that could flourish despite an atmosphere saturated with carbon dioxide and rays of sunshine riddled with radiation.

A waterless seed was the next killer app. Ecosystem Services in Biologically Diversified versus Conventional Farming Systems: Benefits, Externalities, and Trade-Offs. Copyright © 2012 by the author(s).

Ecosystem Services in Biologically Diversified versus Conventional Farming Systems: Benefits, Externalities, and Trade-Offs

Published here under license by The Resilience Alliance. Go to the pdf version of this article The following is the established format for referencing this article: Kremen, C., and A. Miles. 2012. Ecosystem services in biologically diversified versus conventional farming systems: benefits, externalities, and trade-offs Ecology and Society 17(4): 40. Soil - Our Financial Institution Permaculture Forums, Permaculture Courses, Permaculture Information & News. Soil — the substance you walk on, build on, and live from — provides your food, clothing, and even the air you breathe.

Soil - Our Financial Institution Permaculture Forums, Permaculture Courses, Permaculture Information & News

It gives warmth, shelter, and the goods you possess. Soil is, I believe, a substance that is under-acknowledged, and also under attack, and its misuse is contributing greatly to the excessive release of CO2 into our atmosphere – making it a large contributor to global warming. Therefore, I felt it high time we came to its defense. Plantduino Greenhouse. UPDATE 7/9/11: The AC power fed relay has been replaced with a DC battery fed relay system as shown in step 10.

Plantduino Greenhouse

UPDATE: We have been selected as finalists in the microcontroller contest! Thank you for voting and rating. How-To plastic bottle green house build guide ! How to construct a Greenhouse using Plastic Water bottles !!

How-To plastic bottle green house build guide !

Well I think from the picture you have already seen, I reckon you will have a good idea as how to make your greenhouse, however take a look here à( ) there were certain points on the site that I didn’t like, so I adapted my construction a little different to theirs, since my 1st green house I have adapted even more. also I used only 1.5 litre water bottles that friends on the island collect for me, in 3 months I had collected over 7000 bottles, fortunately most had easy peeling labels, the rest are awful to peel, but hey! It’s all for a great cause. Internet of food: Arduino-based, urban aquaponics in Oakland. Build a $300 underground greenhouse for year-round gardening (Video) Growers in colder climates often utilize various approaches to extend the growing season or to give their crops a boost, whether it's coldframes, hoop houses or greenhouses.

Build a $300 underground greenhouse for year-round gardening (Video)

Greenhouses are usually glazed structures, but are typically expensive to construct and heat throughout the winter. A much more affordable and effective alternative to glass greenhouses is the walipini (an Aymara Indian word for a "place of warmth"), also known as an underground or pit greenhouse. Sustainability: Larva production for the benefit of man, animal and environment.

This is the third in a series of articles about sustainability and specifically sustainability within the University. What are our staff members contributing in their fields of expertise; in which sustainable projects and initiatives are they involved and what contribution do they make to this important issue in the rest of South Africa? First article: Sustainability is all about the future – Prof Russel Botman.

Open field system. Generic map of a medieval manor, showing strip farming, from William R. Shepherd, Historical Atlas, 1923 The open-field system was the prevalent agricultural system in much of Europe during the Middle Ages and lasted into the 20th century in parts of western Europe, Russia, Iran and Turkey.[1] Under the open-field system, each manor or village had two or three large fields, usually several hundred acres each, which were divided into many narrow strips of land. The strips or selions were cultivated by individuals or peasant families, often called tenants or serfs.

Ostrich farms are not for chickens. There are fewer than 250 000 farmed ostriches in South Africa, compared with a million at the beginning of the 1900s. Yet demand and prices for ostrich leather and feathers have seldom been better and ostrich meat is also increasingly sought after internationally for its health qualities which it was not in the early 1900s. The South African ostrich industry is a potential boom sector, but the agricultural authorities have been culling flocks at an unprecedented rate because of outbreaks of avian influenza.

Permaculture Principles. Lawton's Guide To Permaculture Design and Strategy - Part 4. Daily Yeah Pictures and Videos. About the Urban Homestead project. In the mid-1980s, our family set out to do the seemingly impossible: To create a new revolution in sustainable urban living. Finding ourselves owning a run-down circa 1917 craftsman-style house in the metropolis of Pasadena (the 7th largest city in Los Angeles County) and just 15 minutes from downtown Los Angeles with the intersection of 134 and 210 freeways 30 yards from our home, we shelved our dreams of idyllic country living and "five acres and independence" and decided to do what we could, with what we had -- RIGHT NOW. No one thought it was possible. Residents in our low income, mixed race neighborhood thought we were the "crazy white folks. " We forged ahead, calling our project the Urban Homestead® model and with no small means of blood, sweat and tears, we worked to transform this ordinary 66' x 132' urban lot [LINK: Comparison Diagram of Property ] into a self-sufficient city homestead with an organic garden that now supplies us with food year-round.

Explore Cornell - Home Gardening - Vegetable Growing Guides - Growing Guide. Landshare - connecting growers to people with land to share. Only Organics Can Feed the Hungry World: Here's Why. Students working on UGA's organic demonstration farm in summer 2012. (Photo: UGA College of Ag)A new approach to agriculture that combines the best in industrial production with organic and sustainable practices is the key to meeting the changing needs of a changing world, where resources are rapidly depleted by a growing population. "Are Organic Foods Safer or Healthier Than Conventional Alternatives?

" is the title of a controversial report released last week by Stanford University's Center For Health Policy. The study concludes that there is "little evidence of health benefit" from eating organic food. " Farmer To Farmer: The Truth About GMO Crops (Documentary) ( Kirlian/Aura-Photography ) -of raw foods !!! Organic rice farmer in India yields over 22 tons of crop on only two acres, proving the fraud of GMOs and Big Ag. Fish farming: affordable protein for SA? Young landless Ethiopians find hope and security in beekeeping. UN warns of looming worldwide food crisis in 2013. Bhutan Bets Organic Agriculture Is The Road To Happiness : The Salt.

Regenerative Agriculture: Feeding the Future. Guido EBNER - Morphogenetic Fields - Electrostatic enhancement of plant and animal development. The GMO debate is over; GM crops must be immediately outlawed; Monsanto halted from threatening humanity. It’s Not a Fairytale: Seattle to Build Nation’s First Food Forest. Accelerated returns in food production. Farm springbok, not sheep in Karoo: report. To Kick Climate Change, Replace Corn With Pastured Beef.