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Most effective weed killer

I tested which natural weed killer solution would kill the most weeds. I used vinegar, salt, and hot water.
by

Tori Pyryt

on 18 January 2013

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Transcript of Most effective weed killer

Hypothesis: As a result of these tests, I came to the conclusion that the hot water was the most effective weed killer out of salt, vinegar and hot water, proving my hypothesis correct. 2. The hot water did end up being the most effective weed killer because of the results I got from doing this test multiple times. For example, in the first test, hot water killed 4 out of the 4 weeds that the hot water was applied to, the vinegar killed 2 out of the 4 tests and the salt only killed 1 out of the 4 weeds it was applied to. 3. Something that went well with my experiment was that I had all the supplies at my house already. A error that may have occurred in the process was that the rain could have washed away the solution from the weeds which could be why the hot water worked better than the other two solutions. If i were to do this test differently, I would have done it in the summer, when there was no rain. Also I would have placed the sections in a place with less foot traffic. 4. If I could do this experiment again I would use and test more solutions. Also I would re-locate the placement of the marked off sections away from foot traffic and conduct the experiment during the summer when there is no rain. Conclusion By: Tori Pyryt Most Effective Weed Killer Steps: Data Test 1:
Hot water killed 100% of the weeds
Salt killed 75% of the weeds
Vinegar killed 50% of the weeds Out of these 3 natural solutions; hot water, salt and vinegar, I think that hot water will kill be the most effective weed killer. -Step 1- Fence off 3 different 2ft x 2ft sections in the yard.
-Step 2- Label each section with the solution that will be used in each section (Vinegar, Hot water, and salt.)
-Step 3- Count how many weeds are in each section and record.
-Step 4- Boil hot water
-Step 5- Pour hot water on the weeds in the hot water section.
-Step 6- Next pour salt on the weeds in the salt section.
-Step 7- The pour vinegar on the weeds in the vinegar section.
-Step 8- Check on each section every 24 hours for a week.
-Step 9- Take pictures of each section after a week.
-Step 10- Count how many weeds are in each section and record.
-Step 11- Repeat this process 3 or 4 more times. Test 2:
Hot water killed 83% of the weeds
Salt killed 0% of the weeds
Vinegar killed 50% of the weeds
Test 3:
Hot water killed 100% of the weeds
Salt killed 0% of the weeds
Vinegar killed 33% of the weeds Test 4:
Hot water killed 25% of the weeds
Salt killed 0% of the weeds
Vinegar killed 33% of the weeds
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