Title

The effect of spent coffee grounds on the growth rate and dry mass of Fragaria vesca plant

Author(s)

Briana Gray, SVHS

School Name

Spring Valley High School

Grade Level

10th Grade

Presentation Topic

Botany

Presentation Type

Non-Mentored

Abstract

To test spent coffee grounds as a natural alternative to the harmful chemical fertilizers used by farmers on large crop fields was this purpose of this experiment. There are many negative effects of the excessive amounts of chemicals and pesticides used on plants directly, as well as its surrounding environment, including the farmers who interact with them. SCG is beneficial because of its caffeine, phosphorus, and nitrogen contents. Phosphorus and nitrogen are helpful nutrients that are found within SCG. Caffeine helps quicken the growth process, but only to a certain extent. It was hypothesized that the 8% SCG group would produce the greatest dry mass and fastest growth rate. The plant fertilized in this study was Fragaria vesca, which were grown from seeds for six weeks in five experimental groups. After six weeks, the sprouts were uprooted and air dried. Proceeding that, the average dry masses were found and the growth rates were calculated. After experimentation, it was found that the 4% SCG group had the highest average and growth rate, which may be due to measurement errors. An ANOVA test was done, showing that a main effect of SCG levels was found. Significant differences were found between the 4% group (M= 128.5, SD= 13.4) and its two closest groups, 2% (M=31.1, SD=6.8) and 6% (M=98.9, SD=37.4). It can still be concluded that the SCG was beneficial because all averages were higher than the control.

Location

Neville 105

Start Date

4-14-2018 9:15 AM

Presentation Format

Oral and Written

COinS
 
Apr 14th, 9:15 AM

The effect of spent coffee grounds on the growth rate and dry mass of Fragaria vesca plant

Neville 105

To test spent coffee grounds as a natural alternative to the harmful chemical fertilizers used by farmers on large crop fields was this purpose of this experiment. There are many negative effects of the excessive amounts of chemicals and pesticides used on plants directly, as well as its surrounding environment, including the farmers who interact with them. SCG is beneficial because of its caffeine, phosphorus, and nitrogen contents. Phosphorus and nitrogen are helpful nutrients that are found within SCG. Caffeine helps quicken the growth process, but only to a certain extent. It was hypothesized that the 8% SCG group would produce the greatest dry mass and fastest growth rate. The plant fertilized in this study was Fragaria vesca, which were grown from seeds for six weeks in five experimental groups. After six weeks, the sprouts were uprooted and air dried. Proceeding that, the average dry masses were found and the growth rates were calculated. After experimentation, it was found that the 4% SCG group had the highest average and growth rate, which may be due to measurement errors. An ANOVA test was done, showing that a main effect of SCG levels was found. Significant differences were found between the 4% group (M= 128.5, SD= 13.4) and its two closest groups, 2% (M=31.1, SD=6.8) and 6% (M=98.9, SD=37.4). It can still be concluded that the SCG was beneficial because all averages were higher than the control.