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| Biology |
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| Soil & Hydroponics |
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 The Orchid Grower A Juvenile Science Adventure Novel |
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What need plants in order to grow?
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Does the amount of fertilizer given to a plant affect its growth? S What Is Hydroponics? |
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What is the best depth for growing bean plants in potting soil?
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Which works better with plants, potting soil or compost. R R Determine how different soils affect the growth of pinto beans. S Discover how much nutrients are in our soil (the amount of pH, potash, nitrogen, and phosphorus). S The effect of different soil mixtures and types on plant growth R S S S S S S S Do plants grow taller hydroponically or in soil? S S The effect of soil moisture on plant germination and growth S S S Which grasses grow best in which kind of soil pH? S How Does Soil Texture Affect Water Infiltration? R Find out the ideal proportion of earthworm castings to soil for young garden plants. R What Is Hydroponics? |
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Discover how the diet of earthworms affects their growth, reproduction, and the quality of the soil they process.
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Determine the effect of earthworm density on decomposition or reduction of surface residues. R Measure the density and porosity of various samples of sand R Use the line transect method to determine surface residue cover; identify crop effects on residue remaining after harvest; observe residue persistence (sorghum versus cotton, wheat, or soybeans) R The influence of water, soil color, mulch, soil surface configuration on soil temperature R The effect of particle size and water content on the ability of a soil to hold together R Determine how different locations substrates affect the flow rate of water and their permeability to water and prove that drier climates increase the porosity of soil and sand substrates; therefore substrates closer to the center of the desert would have the highest flow rates. R Calculated Permeability of Coarse Sand, Fine Sand, and Soil R Determining the Longevity of Insecticide in Different Soil Types R Determining the Ability of Various Soils to Prohibit Ground Water Contamination R Analysis of soil samples for their components, ability to hold moisture, fertility and Ph S The effect of Microarthropods on Soil Productivity R What Are the Effects of Soil Sterilization on Pea Plant Growth? R The Effect of the Type of Soil on the Amount of Chlorophyll in Bean Plants R Determining the Effects of Nutrient Concentrations on Hydroponically Grown Lettuce R Determining the effects of different nutrients on the height of hydroponically grown plants R Determine how Hydroponic and Aeroponic growing systems compare to traditional soil based technology in terms of water consumption, root vigor, and growth rates. R The Growth Rate of Poa pratensis in Pure Humus and Pure Humus Mixed with Sand R Do plants grow better in water (hydroponics) or soil? S S S The best pH range of soil for plant growth S S S S The effect of soil type on the absorption of heat and water evaporation S Absorption of pollutants in different soil types S Soil temperature vs. seed sprouting S Which soil amendment, wood ash, coffee grounds, or leaves, best enhances the development of pea and radish plants? R Does organic material affect the absorbency of water in soil? S The effect of Clearwater Crystals on the germination rate of mung beans S Do plants grow faster or slower in soil without microorganisms? R S The best soil mixture S S The evaluation of nutrient levels in orchard soils S Are water storing granules (rain drops) in the soil helping to conserve water R Electric conductivity as a measure of soil water content for use in watering plants. R Soils as electrical systems R Test the effects of salt on canola and its transgenic lines (seed germination and plant growth). S Analyze the absorption of iron in collard greens in the presence of limestone. R What Is Hydroponics? |
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Explore Hydroponics.
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Determine which of four hay crops - barley, oats, vetch, or peas - is most tolerant of saline soils. R The Effects of Mutualistic and Parasitic Fungus on Plant Growth and Their Soil R A Study of Zinnia Growth in Four Different Soils R Soil Acidity and Liming Overview R What is the effect of changing particle size on the porosity of the soil? S R The effect of cover crop growth time on its effectiveness in enhancing plant growth R The effect of burned soil on seed germination. R How is soil quality affected by soil management? R What Is Hydroponics? |
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