Pesticide Update

Bugs. Can’t live them, can’t live without them. Some of them are crucial components to your garden eco-system, others are nothing but pests. We were told by farmers and gardeners in Mkyashi from the start the bugs would probably be our biggest problem. When we asked some of the more successful gardeners here how they handled bugs, they all told us they had to use chemical pesticides bought in town. Aside from the health side effects of chemical sprays, they are also financially unobtainable for the small scale farmers we’re working with. So we knew we would have to find some better solutions.
Twice per week we apply an organic pesticide made entirely from locally available inputs. It costs about 10,000 Tshillings ($6.25) to make 250 liters of pesticide. The ingredients include:
Green papaya
Aloe vera
Tea leaves
Other grasses and leaves
EM1 (a special microorganism that we always have on hand for use in compost making, booster, and other products)
We apply that to all of our plants twice per week along with a booster made from fish guts (free at the market because it’s a waste product), EM1, and molasses. It’s a weak pesticide but it has done a good job on everything except the Chinese cabbage and the kale. It’s cheap, organic, and edible; easy for families to make and has no health effects.
However, we have had to use some more aggressive measures to fight the red ants that have been attacking. The first strategy we tried was applying a more potent mix of the aforementioned pesticide. Next, we took hot ashes and put them around the base of the affected plants. This worked to temporarily disperse the ants, but they soon came back.
Next, we tried applying a pesticide made from tobacco leaves dissolved in water. This is thought of as a ‘’last resort’’ pesticide because it kills good bugs like spiders and worms as well as bad ones like caterpillars and ants. We applied it only to affected plants. We also tried adding kerosene to the hot ashes to further deter the ants. In the end we have managed to slow the spread of ants and disrupt their damage for days at a time, but we have not found a solid solution to the problem. We are continuing to monitor the spread of the ants and their effect on the health of the vegetables they target.
As I have mentioned before, we are happy to have these problems coming up in our demonstration garden. It gives us the opportunity to learn how to deal with different pests so when they come up in family gardens we know how to handle it quickly. It also gives us the opportunity to play with some interesting dilemmas.
For example, at what cost do we stick to our goal of being organic? If we can make a pesticide at low cost using easily available local materials, should we discount it because it’s not organic? I’m pretty sure that kerosene doesn’t count as organic, but mixing a bit of it with ash is our most successful effort yet against the ants. Is it worth letting potential food die if we can’t find an organic solution? If we find an organic solution but it is expensive, can we expect families to use their money to pursue that solution? And if we decide to supply it for them, is it worth sacrificing their self-sufficiency for our goal? We have decided that finding cheap, local, organic pesticides and boosters is our goal, but in the meantime we need to learn about as many solutions as possible so that we can share the knowledge with the community and let people make their own decisions. There are good solutions out there and in time we will find them.


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