Research Challenge #3 |
Research Challenge #3:
Is seed germination
affected by herbicide residues in soil?
Suppose that you are interested
in planting a garden or farm field but have no idea what chemicals have previously
been used in that soil. Or maybe you've seen dead grass and weeds along fencelines
and have wondered how far the herbicides might have spread in the surrounding
soil, or how long their effects will last. Perhaps you have applied an herbicide
yourself and are wondering how long it will take before it is safe to plant
new seeds in that area.
These kinds of questions can be addressed using seed germination bioassays. A fact sheet from Cornell's Horticulture Department describes how to carry out this type of bioassay and what sorts of treatment are possible if harmful herbicide residues are found in soil.
Your challenge is to come up with an interesting research
question that relates to herbicide residues in soil, then design and carry
out one or more bioassay experiments to address your question. Be sure to share
your results using EI's discussion
boards or on-line peer review system.
Good luck and have fun!
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