Mechanisms Of Herbicides Manufacturer,Supplier and Exporter
Product Code : EL-M-10551
DESCRIPTION:
Mechanisms Of Herbicides
This exercise is designed to demonstrate the effectiveness of different categories of chemical herbicides.
Students transplant grasses and weeds into flats or pots and investigate how and why different plants are killed by different chemical herbicides.
A simultaneous microbiological proof with inoculated agar plates is run to reinforce the results, further categorize herbicides, and determine possible effects of the herbicides on soil microorganisms.
Each group will choose two natural products and design a simple experiment to compare chemical vs. natural weed killers.
A round table discussion including experimental designs, results, comparisons, and possible environmental impact culminates the exercise.
Requires five class periods, plus research time. Required, but not included: heat source, flower pots or nursery flats, grass and weeds for transplanting. Designed for 24 students working in four groups of six.
Grades 9-14
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