Plant Nutrition (Fertilizers, Vitamins)
Science Fair Projects
Ideas and Sample Projects by Grade Level

Home Experiments Photosynthesis Warning!
Primary School - Grades K-3
P=Project   E=Experiment
The effects of nitrogen fertilizer on plant growth [E]
Will plants grow better if watered with milk because milk contains vitamins and calcium? [P]
Does the amount of fertilizer given to a plant affect its growth? [P]
Fertilizer K-12 Experiments & Background Information
Elementary School - Grades 4-6
P=Project   E=Experiment
The effect of fertilizers on the germination and growth of plants [E] [E] [E] [P] [P] [P]
The effect of nutrients and vitamins on plants [P] [P] [P]
Would fertilized mushrooms grow larger than mushrooms which were fed only water. [P]
Fertilizer K-12 Experiments & Background Information

Middle School - Grades 7-9
P=Project   E=Experiment
Using Human Urine as a Fertilizer [E]
Enhancing the Biomasses of Raphanus sativus with Different Manures [E]
Can Food By-Products Be Used as a Natural Supplement for Plant Growth? [E]
Which has a greater effect on plant growth: vitamin C, vitamin E, or fertilizer? [E]
The Effect of Parasitic Worming Medication in Horse Manure on Red Worms in a Compost Setting [E]
A Comparison of Nitrogen-Fixing Bacteria and Nitrogen Fertilizers [E]
Determine if manure from a horse (through a change in the animal's diet), can be used as effectively as steer manure when utilized as plant fertilizer. [E]
Find out which kind of flower will last the longest in fertilized and non-fertilized water. [P]
Novel Ways to Increase the Vitamin C Production in Lettuces without Genetic Manipulation [E]
Determining the Effects of Nutrient Concentrations on Hydroponically Grown Lettuce [E]

Find out if compost or store bought fertilizer helps vegetables grow taller. [E] [E] [E]
See if the amount of phosphorus in fertilizer affects plant growth. [E]
Determine how the timing of the application of potassium affects plant growth. [E]
Find out how temperature affects a plant's ability to transport nutrients. [E]
Does Beta Carotene Prevent Tumor Growth in Plants? [E]
Make homemade fertilizers and compare them with commercial fertilizers. [E]
The effect of different fertilizers on growth rate of plants [P] [P]
The Effects of Potash Tailings on the Growth of Barley and Flax [P]
Does refined sugar or table salt affect radish growth [P] [P]
The effect of vitamins on plant growth [P]
The effect of nutrient uptake efficiency on the growth of plants [E]
Effectiveness of various decomposers on the nutrient levels of yard waste [P]
The effect of biuret and urea on citrus leaf necrosis and growth [E]
What effect does the salicylic acid in the "pain relief" medicine aspirin have on the growth of plants? [P]
Do nutrients affect seed germination? [P]
Fertilizer K-12 Experiments & Background Information
High School - Grades 10-12
P=Project   E=Experiment
Effect of Age on Primary Nutrient Content in Bovine Manure [E]
The effects of nitrate as a cause of eutrophication. [E]
Determine the impact of instant release fertilizer versus timed-release fertilizer in respect to eutrophication levels. [P]
Determining Which Percentage of Nitrate in Fertilizer Will Yield the Greatest Height in Vigna unguiculata. [E]
Determine which solution, acidic, neutral, or basic, will affect the growth of Daytona (Bush) Beans most positively. [E]
Calcium as an important plant nutrient [E]
The Effect of Garlic on the Germination of Wild Oats [E]
Does an optimal level of salt concentration exist for plants? [E]
The analysis of the uptake of nitrogen in grasses and legumes [E]
Fertilizer K-12 Experiments & Background Information
Useful Links
Science Fair Projects Resources [R]
Citation Guides, Style Manuals, Reference [R]
Safety Resources [R] [R]
Botany Science Fair Books


Botany Project Ideas
Botany Topics Related Subjects
Seeds & Germination
Soils & Hydroponics
Soil Organisms
Colors in Botany
Weather in Botany
Plant Irrigation
Plant Nutrition
Plant Hormones
Plant Pesticides
UV Radiation Effects
Organic Agriculture
Genetically Modified Food
Plant Pollutants
Plant Cultivation
Plant Physiology
Plant Genetics
Plant Disease
Medicinal Plants
Acids in Botany
Salt & Sugar in Botany
Sun & Light
Environmental Sciences

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Last updated: September 2016
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