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Title: Does the Amount of Fertilizer Given to a Plant Affect Its Growth?
Subject: Botany Grade level: Primary School / Kindergarten - Grades K-3 Project Type: Experimental Cost: Low Awards: None Affiliation: Timber Ridge Magnet School Online Science Fair Link: http://www.collaboratory.nunet.net/timber/scifair/kindto4/8.htm |
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A fertilizer is a chemical that helps plants to grow. It is used to replace the mineral salts taken by plants or removed by rain. Common fertilizers:
The important things in fertilizer are:
When fertilizer is for sale, the percentage of N, P, and K in it may be written on the bag or box, like this: 9-23-30. That means 9% N, 23% P, and 30% K. Leafy plants need lots of N. Flowering plants need lots of P and K. A soil test can tell how much N, P, and K is needed. |
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