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Does Garden Safe Weed Preventer Hurt Plants?

CSEF · 2013 Plant Biology

James D. Cobb · Wash (John S.) Elementary School, Fresno, Fresno County

Overview

Objectives/Goals Test if pre-emergents effect the growth the raddish plants. Methods/Materials Planted 3 raddish seeds (72 individual containers) remove unhealthy plants, only one healthy plant per container. broke 72 containers into 3 sections (24 a piece) added pre emergent (recommended amount into one section) (2x recommended in second section) (3rd section is the control) allow plants to grow. (2 weeks) measure root lengths Results Control averaged 9.75 cm (root growth) recommended 11.25 2X 11.75 Conclusions/Discussion I learned that the pre-emergent not only doesn't hurt the plant, but helps growth, while preventing weed growth.

Summary statement

Does Pre emergent impact plant growth?

Help received

Teacher taught scientific method, provided classroom help with experiment. Parents helped in purchasing materials. They also helped put board together.

Competition history

  • CSEF 2013 Plant Biology · Entry J1903

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