Andrew333

Hi, I'm in 12th grade and for my senior project I am doing an observation on the effects copper would have on plant growth. I have used copper sulfate to create increasing concentrations of copper in which I used to water my test plants. What I need some help on is whether copper sulfate can or should have been used in order to test the effects that copper has on the plants. After further research of lately, I found that copper sulfate not only has copper but I've read that it contains sulfur as well. I believe this would ruin the purpose of my experiment as the sulfur may effect the plants. I would appreciate any assistance from someone who has more knowledge on this topic. Thank you very much.

Hi, I'm in 12th grade and for my senior project I wanted to do an experiment on the effects that copper and zinc have on mung beans. I have copper sulfate pentahyde and zinc sulfate monohydrate, which I had purchased because I have seen information on other similar experiments where these were used to test the effects of copper and zinc on plants. I was wondering whether I should instead use copper powder and zinc powder instead as these, I think, would make for better variables because they are purer forms of metal. Aside from this, I have had trouble deciding what amounts to use on the plants and whether I should add the amounts to the soil directly before planting or make a solution with water and use it as the plants' water source throughout the experiment. I was planning on using 24 plants for the copper part of the experiment with six groups of four plants, with the first group of four being the control group and the next five groups having increasing amounts of the heavy metal. The same would be done for the zinc portion. Any thoughts or suggestions would be appreciated. Thank you very much.