Understanding Urban Agriculture – Part 3, Calculating the Food Production Potential of a City

Community vegetable garden

It has been well said that we do not see things as they are, but as we are ourselves. Every man looks through the eyes of his prejudices, of his preconceived notions. Hence, it is the most difficult thing in the world to broaden a man so that he will realize truth as other men see it. Samuel Silas Curry, 1891 What does it take to convince a person that […]

Read More >
9 Comments

How To Know When Your Soil Needs Nitrogen

green winter wheat growing

Nitrogen deposited in the soil may undergo mineralization; this is the conversion of organic nitrogen to inorganic plant available forms (nitrate (NO3-) and ammonium (NH4+)).1 Nitrate is a highly mobile nutrient in the soil. It is negatively charged and so cannot be held on to by negatively charged soil (clay and silt) particles. This is why it is vulnerable to being leached down the soil profile. Nitrogen is a necessity […]

Read More >
5 Comments

Antibacterial Soap Ingredients Banned by FDA

Antibacterial Soap Ingredients Banned by FDA

Just a short time ago the US FDA banned the manufacture of antibacterial hand soaps and body wash containing certain active chemical ingredients. This follows a proposed rule that began in December of 2013 to determine the effectiveness of the chemicals and consumer safety over an extended period of daily use, as concerns began to arise from studies that showed that Triclosan could be a key factor in bacterial resistance […]

Read More >
0 Comment

Gardens Aren’t Just for Plants, So What Else Is There?

Garden Patio

Like any budding permaculturalist, I spend a lot of my design time obsessing about what plants to include, how I’ll be piecing together this guild or time-sequencing that bed. I want my crops to fix nitrogen, provide food, deter pest, create mulch, make shade, prevent erosion, and, oh, how the functions add up. Who can help it? It’s a wonderful world we live in, and wonderful task we are involved […]

Read More >
5 Comments

The Soil Profile

Soil

The soil profile can tell a lot about a soils fertility status. For example, a very fertile soil will have a dark-coloured surface layer owing to its rich organic matter content. By looking at the soil colours at different layers of a soil profile, scientist can characterize a soil by its age, formation process and mineral composition (know more about soil colour). The soil profile is the vertical cross section […]

Read More >
8 Comments

Evolution of Permaculture

Evolution of Permaculture

Anybody who has taken a PDC course or read material on the net would have learnt basic principles of Permaculture. There are 12 principles from David Holmgren and Bill Mollison’s principles scattered throughout the Permaculture Designer’s Manual. Courses around the World usually follow only one of the founder and base the 72 hours PDC course on him. Learning is an experience and never ends. Especially with permaculture, where the application […]

Read More >
8 Comments

Paradox of Value

Paradox of Value

Adam Smith’s famous Paradox of Value theory, as illustrated (literally and figuratively) by the people at Ted Ed in this succinct video, is something that each of us has encountered at some point in our lives. It guides how we choose to spend our resources and time, beginning as early as elementary school—when we’re first challenged with optimizing the hours of the day, balancing schoolwork with play time or perhaps […]

Read More >
2 Comments

Will We Really Have Water Forever

Will We Really Have Water Forever feat

Water truly is our most precious resource. We can go without food for up to thirty days. After three, we die of thirst because our bodies are almost 60% water. Babies are 75% water when they arrive. Water is life. When I was growing up in the 1960’s we thought the supply would last forever. Our kindred planet, Mars once had water in abundance, but now there appears to be […]

Read More >
0 Comment

The Soils Cation Exchange Capacity and its Effect on Soil Fertility

Carrying out a soil analysis

Cation exchange capacity. Soil nutrients exist as positively charged or negatively charged ions when dissolved. The positively charged ions are known as cations and the negatively charged ions are known as anions. The nutrients which exist as cations are calcium (Ca2+), Magnesium Mg2+, ammonium (NH4+), potassium (K+), hydrogen (H+), sodium (Na+) aluminium (Al3+), iron (Fe2+), manganese (Mn2+), zinc (Zn2+) and copper (Cu2+). Some of the nutrients which exist as anions […]

Read More >
3 Comments

Permaculture Education Centre

Permaculture Education Centre feat

A Permaculture Educational Centre in cool climate Australia to support so many people. Being parents of 8 children plus foster caring 28 and hosting 8 from various countries we know how important and invaluable it is to create a sustainable future via permaculture education for future generations. We all learn differently and our lives take many twists and turns when travelling life’s journey but I think we all know when […]

Read More >
1 Comment

If Global Aviation Were a Country

If Global Aviation Were a Country

According to the National Resources Defense Council, If Aviation were a country it would be the 7th largest polluter in the world. The NRDC made the statement in a report in 2013 after an annual meeting of the International Air Transport Association. The IATA is a global association that represents 84% of air travel worldwide. In 2013 the industry was responsible for 3% of carbon dioxide emissions in the U.S. […]

Read More >
3 Comments

Peat Soils

Peat Soils feat

Peat soils are formed from partially decomposed plant material under anaerobic water saturated conditions. They are found in peatlands (also called bogs or mires). Peatlands cover about 3% of the earth’s land mass; they are found in the temperate (Northern Europe and America) and tropical regions (South East Asia, South America, South Africa and the Caribbean) 1. Peat soils are classified as histosols. These are soils high in organic matter […]

Read More >
0 Comment