---------- Forwarded message ----------
From: graham knight <graham075@googlemail.com> Date: 10 April 2011 09:12  Subject: BioDesign N/L 11.04.11

Drought & Irrigation  -  Solarising Lamps  -  Wick Irrigation  -  Texting SMS    
 
An effort is being made to produce an irrigation wiki. It will concentrate on helping families to be able to produce food even during the worst droughts.
By chance our approach matches in every detail that of a project in Pakistan where it has been shown that, with the right approach, enough food can be produced. 
Here is an extract.
"Rural people, forming the group most affected by the food crisis, do not need to play a role in boosting the world's food production. They simply need to produce enough food for their own family (”to fill their own hungry stomach“). Application of cost-effective technologies should therefore be programmed at the level of small-scale “family gardens” or “school gardens”
Full article at bottom.
 
 
DIY Solar in Cameroon
A big effort has been made in Cameroon to learn about adapting lamps/lanterns for pv solar.
The NGO WIDCO has managed to solar pv convert a kerosene lamp and a small dry cell-powered LED lantern and are wondering which is best to adopt for general use.
This is a difficult choice! The imported LED lantern gives more light but how long will it last?
 
As had been mentioned in the past often small imported lamps do not last for long.
It is a bit like choosing between a cheap and expensive battery - the cheap one may look fine but may soon be dead.
So it is very important to carefully test any lamp that you intend to convert and the solar cell is even more important!
 
Many pv cell devices, like tiny lamps, are really gimmicks - the sort of thing that wasteful Westerners put in the Xmas stockings of their children to last for just a few days. Most small pv cells have a plastic coating that is affected by bright sunlight and soon starts to cloud so the output falls and the battery gets charged very slowly.
 
Another factor to consider, among several, is the life of the lantern plastic.
Often plastic is badly affected by bright sunlight so it should not be left in the sun for long or it will eventually disintegrate!
 
The NGO WIDCO have produced an illustrated report showing how they have used the DIY Solar technique to convert several devices. A pdf is available!
 
 
Rope Wicks in the Gambia
 The first experiment in Africa is underway to check out the 'mechanics' of the subsurface wicking system.
It needs some flexible PVC hosepipe for the main supply so if you have some and want to try this out do let us know and we will send you rope and connector samples!
There is lots to learn.  
 
Sending a Text
 If you, like many, have an unreliable emailing service we can keep in contact when needed. with an SMS from your mobile phone.
Email me your number. When you reply to my SMS your message arrives on my computer.
 
Graham
 

Growing food crops in the drylands

 
Drought is a powerful factor which shapes livelihood and economy of the Tharparkar people, which affect all aspects of their lives such as food, prices of livestock, crop income, labour rates, school attendance, drinking water quality and so many others, which causes the escalating rate in migration. 
Drought is not new for the local people, but what makes them despair today is the fact that nature and pattern of the calamity have changed a lot. Currently drought does not just imply a state of not having enough food rather it gives rise to many problems leading to permanent loss of community and household assets and means of livelihood.
Poor rural people in the drylands, climate refugees, drought and political migrants, they all show some concern over climate change and global warming. However, their most urgent wishes, their basic priorities are not directly related to the climate, but to their empty stomach and poverty. If there is any option for us, then let us first take care of their water and food problems. 
Being aware of the necessity to take care of the global warming problem (a long-term task), the international community should FIRST provide short-term ways and means to solve the food problem in all the drylands of this world. The solutions are known. 

Rural people, forming the group most affected by the food crisis, do not need to play a role in boosting the world's food production. They simply need to produce enough food for their own family (”to fill their own hungry stomach“). Application of cost-effective technologies should therefore be programmed at the level of small-scale “family gardens” or “school gardens”.
It has been observed by thata meal with green vegetables is a privilege that only a few families settled near town can afford. For a common person the menu invariably includes millet-loaves with a handful of chilies throughout the long dry spell of the year. The result is obvious; hundred of people fall in victim to infections disease every year primarily due to improper diet and malnutrition.
With these family gardens, it was clearly shown that with minimal investment maximal results were made within a short time, e.g. 6 months, whereby families were enabled to grow their own food with a minimum of irrigation water.
A very simple soil conditioning method offered a maximum of chances to grow vegetables and fruit trees in two different seasons: a milder autumn-winter period and a hot spring-summer season.
It should be a basic principle that food aid starts with the construction of a small kitchen garden for every family in the drylands.

If  it is possible to offer such a small garden to families in dryland area such as Tharparkar desert, it is feasible everywhere.
One needs only a small fence, a minimal quantity of a water and fertilizer stocking compound, a minimal volume of irrigation water and some seeds. 
Imagine the low costs for offering fresh food all year long to rural families in the drylands.

Splendid examples of long-term combating food shortage with family gardens can be seen everywhere. One can only hope that such a success story will soon be duplicated in many similar situations, where hungry people wait for similar innovative and well-conceived practices, with a remarkable return on investment, laying solid foundations for further sustainable development. Food aid, be it with billions of dollars, can only be very effective if priority is given to local food production for the poor rural or urban people, who cannot afford to buy the expensive commercial food products in shops or supermarkets.

Small-scale family gardens, school gardens, allotment gardens and urban gardens in unused open spaces should be our strategic counter-attack against the actual food crisis.