Fertilizer on a Mission Question • Do seeds grow better in liquid, solid, or powdered fertilizer? purpose • The purpose of our investigation is to determine if grass seeds grow better with liquid, solid, or powdered fertilizer? This is important because when you use fertilizer, you should use the one that grows seeds the fastest. Hypothesis • I hypothesize that the powdered fertilizer would help seeds grow the best. I believe this because the powdered fertilizer will be absorbed more quickly by the seeds. Liquid would be too runny and would make the seed drown. The solid would be too hard and the seed would not be able to come out of the solid fertilizer because the solid would be covering the seed. PROCEDURE Materials • • • • • • • Three sets of 5 seed starting plant pots Solid fertilizer – Miracle Gro Plant Food Spikes Liquid fertilizer – Schultz Plant Food Plus Powdered fertilizer – Miracle Gro All Purpose Plant Food 1 TBSP measuring spoon Bermuda Grass Seed – 30 tsp. Water Variables MANIPULATED VARIABLE: Type of fertilizer RESPONDED VARIABLE: Growth of plant CONSTANT VARIABLES: soil, grass seeds, pots, water DIRECTIONS Gather materials Fill 3 sets of 5 cups of seed growing plant pots Label pots with the names of the fertilizer that was used on the seeds Place ¼ tsp grass seed in each pot Using directions on package, mix liquid fertilizer with water Using directions on package, mix powder fertilizer with water Place 1 solid plant stick into pot and label Water daily, using 1 tbsp. in each cup of all three sets of plants Monitor the pots daily for growth measure the height of the grass in each pot. Record. • Calculate the average growth for all solid, liquid, powdered fertilizer plants! • • • • • • • • • Plant Growth Chart Type of Fertilizer TRIAL ONE TRIAL TWO TRIAL THREE TRIAL FOUR TRIAL FIVE AVERAGE Liquid Tallest: 2.0cm Tallest: 1.6cm Tallest: 1.9cm Tallest: 1.7cm Tallest: 2.3cm Tallest: 1.9cm Blades: 15 Blades:8 Blades:9 Blades:12 Blades:7 Blades:8 Tallest: 1.8cm Tallest: 1.4cm Tallest: 1.3cm Tallest: 1.7cm Tallest: 1.3cm Tallest: 1.5cm Blades:2 Blades:3 Blades:6 Blades:2 Blades:3 Blades:3.2 Tallest: 0.0cm Tallest: 0.0cm Tallest: 0.0cm Tallest: 0.0cm Tallest: 1.0cm Tallest: 0.2cm Blades:0 Blades:0 Blades:0 Blades:0 Blades:1 Blades:0.2 Powder Solid KEY: = LIQUID = POWDER = SOLID Conclusion • My hypothesis was incorrect, seeds grow better with liquid fertilizer. The liquid fertilizer average was 1.9 cm and produced 8 blades of grass. The powdered fertilizer average was 1.5cm and produced 3.2 blades of grass. The solid fertilizer average was 0.2 cm and produced 0.2 blades of grass. If I could do this project again what I would do differently is, I would use a different plant, or grass type to see if I got the same results.