Wednesday, 30 November 2011
Elixers Of Death
I found this reading very concerning. I wasn't sure what was used as pesticides but arsenic was certainly not high on the list. Other popular pesticides include chlorinated hydrocarbons. which are altered methane particles. One of the particles created is called DDT. which was at first thought not to be hazardous to humans since it was used to kill lice on soldiers. However this substance is poisonous when in contact with oils and is stored in fatty substances such as the intestines. Humans are exposed to this chemical either directly in vegetation which has had contact with DDT or through a less direct way. Hens that eat food dusted with DDT eggs have concentration of DDT as dose cows milk. Another scary fact is that these poisons can pass through placenta, damaging babies before they are even born. Chlordane (another pesticide) is highly poisonous, in one case 25% industrial solution was accidentally poured on skin and the vitem was poisoned in 40 minutes. Aldrin causes sterility in animals and is a very real way humans could become extinct. The worst pesticides are Organic phosphates super poisonous such as Parathion. It is extremely concerning to think that these highly hazardous substances are being sprayed carelessly all over the world, to kill weeds and pests. Humans were able to survive previous to the chemicals, however these chemicals that were supposed to help us prove a very real threat to the extinction to our entire race.
Wednesday, 23 November 2011
A Compost Success Story
The greenhouse and an aquaponics system sounds really great and I will be looking forward to seeing that when we go to Windermere on the 9th. I also liked that the cafeteria uses that food and herbs from the garden. Its nice that the gym classes were incorporated with picking up the compost materials. This really makes the whole school involved and interested the garden effort. I've only read a little bit about the Leadership program at Windermere but it seems really focused on uniting the community, different grades and the school through common goals and challenges. It would be nice to see if a program like this could work at west van.
Tuesday, 22 November 2011
Red Worm Composting
Basically worm composting is keeping worms as "pets" to help break down materials into nutrient rich soil. Worms can be kept in boxes (wood works best) and about 2000 are needed for 1 pound of organic waste. Bedding must also be provided as well as grit so the worms can break down matter. Worm composting is a bit more work then other composts as you've got to worry about the well being of the worms and keeping the environment beneficial to them (not to wet, dry, acidic, with to much bedding or not enough etc). These composts are also pretty smelly; the article stated that "foul odours and fruit flies" are a common problem. However I like that the material is being broken down in such a natural way and by keeping worms you are helping the environment. The article said that red worms are the best to use as dew worms often die. I wonder what other worms may be used and which ones are better suited to different kinds of wastes.I don't think that I will personally keep worms but it seems pretty interesting. My favorite compost so far is still the Bokashi compost.
How To Make Leaf Mould
A few weeks ago we collected leaves in garden club to make leaf molds and I remember seeing the leaves that were a year old and that they werent as broken down as I may have imagined. Leaf mold does not use green and brown organic matter like normal compost does and it takes longer to break down. The video suggested collecting leaves after a rain fall or when they are damp to aid the decomposition process. It also said that a handful of bone meal may help as leaves are low in nitrogen. It advised against using glossy leaves and gum based plants as the leaves take too long to break down and instead a variety of deciduous trees. I thought it was interesting that pine needles can be used to make an acid leaf mould. I'm not 100% on the uses for leaf mould but i assume that it is used to put nutrients in the soil and cover plants during the winter season.
Bokashi Compost
Bokashi solves my previous issue with the bad smells associated with compost. I have never heard of this and its seems pretty cool. Bokashi is anaerobic fermentation process that uses a special Bokashi mix which consist of wheat bran, molasses and effective microorganisms to break up organic matter. The liquid that seeps from the compost or "compost tea" can be used as a fertilizer for plants. I also read that this "tea" can be used to treat fungal aliments on the human body but I defiantly would not drink it. Bokashi seems pretty good but it takes a bit more effort then normal compost and the material is more "fermented" then rotted. It also can be used to eliminate bad oders elsewhere in the home. The Bokashi compost must be kept airtight and requires a few weeks to properly ferment.
Friday, 18 November 2011
General Composting Tricks for the North Shore
Bacteria need three things to survive: food, air and moister. For food brown carbon rich material and green nitrogen rich material are necessary. It is also important to put equal amounts of each in the compost bin. The stuff in the compost gets weighed down over time so you have to punch holes through it or use a “wing digger” to re-oxygenate it. The video also said that the bin may get too dry in the summer so you have to water it sometimes. My main complaint about composting is the terrible smell. Kitchen scraps are often used for compost and I absolutely hate opening the cupboard where the garbage is to be greeted with a nice rotting compost smell, which hangs in the same cupboard. It is also a pain to be running outside every five seconds to throw things in an outdoor composter, especially in a rainy place like Vancouver. If there was a way to put some sort of material (maybe baking soda?) in the lid so it didn’t smell so bad that would be really great. Then again I may just be being a princess.
WILL THE CANADIAN WHEAT BOARD BE DISMANTLED?
I found this article a little confusing at first. First I had to do some back ground reading. I wasn't totally sure what the Canadian Wheat Board really was. Basically it seems like the Wheat Board is where all the grain is sold to by farmers. I wondered if the price of wheat would go up if there was more competition in buying. I don't really think that is a positive thing. I understand why farmers would vote against having a wheat board if they think they could get more money from a private buyer although this may not be good for everyone else. I personally believe in keeping world wheat prices low. Other countries such as the US have raised world wheat prices and it may be argued that this was a catalyst behind uprisings in other countries. I also don't think the plebiscite was valid if only 56% of farmers voted.
Thursday, 17 November 2011
Building up and protecting soil
I learnt al lot of interesting facts in this reading. Its incredible to think that over 9 billion organisms can be in one table spoon of dirt, which is more then human population of earth. I was aware that only a small percentage of the earth was suitable for humans to live on but I had no idea that only 18% of earth has arable soil. This seems a miniscule faction for our growing global population. I read about nitrogen fixing organisms and how they help change the nitrogen into a usable form for plants and about how carbon holds everything together. I thought it was surprising that there is twice as much carbon in the soil as in the air. Humus is greatly responsible for fertile soil and a lack of this organic material can lead to lower qualities of soil. I thought the part about the fall of ancient civilizations due to quality depletion of soil was interesting. I have read about the Fertile Crescent (or not so fertile crescent as it ended up) before. This path seems to be the destiny of the whole world if changes aren't made soon. I didn't realized erosion was such a huge issue; not only to farm-able lands but the fun off in the oceans as-well. The idea of "dead rivers"because of pesticides collected in erosion is very scary. Worst still was the part about farmers getting cancer and other diseases due to toxins. It was nice that this article ended on a positive note; wind barriers seem like a logical solution to wind erosion, as well as organic fertilizers to improve soil and reduce toxins. In conclusion it seemed like the most important solution was the interest of the average person in buying organic food and growing their own food responsibly.
Sunday, 6 November 2011
Growing Garlic
I had no idea there were so many different types of garlic! I think we tried to grow garlic at home a few years ago, and I remember the flowers were purple and really pretty but I don't think we ever got any bulbs. The reading said that the seeds must be taken care of properly and the ph balance of the soil is essential. Garlic can be planted in Autumn after the first hard frosts, but should be well covered with mulch. There is still time to try planting garlic so I might try that again at home. In retrospect the place we planted the garlic last time didn't have a lot of drainage (also important, to avoid rotting) so that may have been why they didn't do so well.
Winter Crops in BC
I thought that Vernalization (a technique of tricking the seeds into thinking they have already experience winter by putting them in the freezer) was pretty cool. I also thought it was interesting that alot of the vegetables are sweeter after a frost, for example parsnips. I didnt know that it was actually beneficial to have plants in the ground over winter as then they can flower sooner and have stronger root systems. Last week we packed leaves to cover some of our plants that will be in the ground over winter. I wonder what variation there is between covering plants with straw or leaves or other insulators.
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