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Others Like “Earthworm Castings — The Ideal Proportion in Soil for Young Garden Plants”

Science Fair Project Idea
thumbnail Have you ever planted a garden? It is a real pleasure to see a garden where all of the plants lie in neat rows and are healthy and thriving. Plants need sunlight and nutritious soil to grow and be healthy, right? Not always! Hydroponics is the science of growing plants in nutrient-rich water. Does it work? Try this project and see for yourself! Read more
PlantBio_p045
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Time Required Very Long (1+ months)
Prerequisites None
Material Availability A hydroponics terrarium is required and, for your convenience, can be purchased at the [# Link Name="PlantBio_p045.1" Value="HtmlAnchor" #].
Cost Average ($50 - $100)
Safety Use gloves and safety goggles when handling chemicals. Adult supervision is required.
Science Fair Project Idea
thumbnail Have you ever planted a garden? It is a real pleasure to see a garden where all of the plants lie in neat rows and are healthy and thriving. However, it can be very frustrating when your garden doesn't thrive. There are numerous causes that prevent a plant from thriving. Perhaps the soil is not rich enough with nutrients or maybe pests are present in the soil that are sapping the seedling's energy. Soils also carry fungi that can attack a young seedling. What if you could avoid some of the… Read more
PlantBio_p044
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Time Required Very Long (1+ months)
Prerequisites None
Material Availability You must purchase a hydroponics kit. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety Use gloves and safety goggles when handling chemicals. Adult supervision is required.
Science Fair Project Idea
thumbnail Did you know that apple trees do not "breed true"? This means that if you plant seeds from an apple, say a Granny Smith, you will get apple trees, but they will make apples that are actually different than Granny Smiths. So how do farmers produce new Granny Smith trees? They use a method called vegetative propagation. For instance, they may cut a branch off of a tree that grows Granny Smith apples and attach the branch onto a different tree trunk. This method of making new trees is called… Read more
PlantBio_p040
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Time Required Very Long (1+ months)
Prerequisites None
Material Availability Readily available
Cost Average ($50 - $100)
Safety No issues
Science Fair Project Idea
The element lead is a neurotoxin that is particularly dangerous to young children. Among other uses, lead compounds were common paint additives until being phased out for safer titanium-based additives beginning in the 1960's. Lead compounds were also added to gasoline to prevent engine knocking, until being phased out beginning in the 1970's. Although paint and gasoline sold today no longer contain lead, soil can have contamination from older sources of lead, such as paint from old… Read more
EnvSci_p001
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Time Required Average (6-10 days)
Material Availability A lead soil test kit may need to be specially ordered. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Science Fair Project Idea
thumbnail Crown gall is a plant disease caused by the soil bacterium Agrobacterium tumefaciens. This project uses tomato plants to investigate whether garlic extract can prevent crown gall infection. Read more
MicroBio_p024
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Time Required Long (2-4 weeks)
Prerequisites You will need a plant with an existing crown gall infection as a source of bacteria for this project.
Material Availability Readily available
Cost Low ($20 - $50)
Safety Use caution when cutting with sharp knife or razor blade.
Science Fair Project Idea
thumbnail Every spring, gardeners around the world get ready to plant their summer gardens. They turn the soil over in their garden plots and add nutrients to the soil. Then they plant their seedlings and wait for nature to provide a bounty of fruits, vegetables, and flowers. But nurturing the garden doesn't stop there. In order to get lots of fruits and vegetables, the gardener must eliminate factors that can hurt the plants. Sometimes, chemicals in the soil from other plants and trees can hurt a… Read more
PlantBio_p042
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Time Required Long (2-4 weeks)
Prerequisites You must have access to black walnut trees on your own property, or permission to pick leaves if the tree is on someone else's property. You must also have access to a stovetop.
Material Availability Specialty items are required. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Minor injury is possible. Use disposable gloves and safety goggles when working with chemical solutions. Don't use the solution made in this science fair project in your home garden. The chemical juglone can remain in the soil, poisoning plants for many years.
Science Fair Project Idea
thumbnail Did you know that when you use fertilizer in your garden, it can eventually reach a lake, stream, or pond? There are many different chemicals present in fertilizers. How will they affect the aquatic organisms in the ecosystem? In this science project you will get to find out! Read more
EnvSci_p017
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Time Required Long (2-4 weeks)
Prerequisites This project will require approval from the [# ProjectGuide Name="Advanced.ScientificReviewCommitteeSRC" Value="HtmlAnchor" #] if you use fish or any other vertebrate animal in your experiment.
Material Availability Readily available
Cost Average ($50 - $100)
Safety This project requires adult supervision when handling and measuring liquid fertilizer.
Science Fair Project Idea
thumbnail What covers less than 10% of the Earth's surface, yet is a vital natural resource for terrestrial life? What filters ground water and supports most of our food production, not to mention the production of building materials and paper? The answer, often overlooked, is: soil. With this project you can get all the dirt on soil formation, soil horizons, and the composition of different soils. Read more
EnvSci_p011
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Average ($50 - $100)
Safety Minor injury possible
Science Fair Project Idea
thumbnail Do you know what is living in your backyard? How about at the playground, or in your compost pile? Nematodes, also called roundworms, are the most abundant animal on Earth and they might be living in any of these places. In this science project you'll isolate nematodes from several soil samples to discover the best nematode habitats. Read more
Zoo_p045
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability The E. coli culture and the agar plates are specialty items. They can be ordered online (see Materials and Equipment for more details), but you will need to plan ahead.
Cost Low ($20 - $50)
Safety This science project involves the use of the bacterium E. coli. Standard microbiology and bacterial safety guidelines should be followed.
Science Fair Project Idea
thumbnail Plants move—not very quickly compared to animals, but they do move. Their roots grow downward in response to gravity, and their stems grow upward toward the Sun. In this plant biology science fair project, you will investigate how young plants respond through movement to light. Read more
PlantBio_p041
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Time Required Very Long (1+ months)
Prerequisites None
Material Availability Readily available
Cost Average ($50 - $100)
Safety No issues
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