The Relationship of Composted and Uncomposted Indianola Soil to Chemical Composition of Broccoli Inflorescences By Christopher Licata & A.B. Adams.

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Presentation transcript:

The Relationship of Composted and Uncomposted Indianola Soil to Chemical Composition of Broccoli Inflorescences By Christopher Licata & A.B. Adams

Model Randomized split-block design with one replicate Two treatments (composted vs. unamended) 4 reps per treatment

Indianola Soil Series from Rob’s Backyard -near top of hill, slightly inland from Lake Wash. -profile with some structure and horizonation -A horizon is dark reflecting OM content -reddish color in B horizon indication of oxidized conditions - C horizon is granular and light in color with Esparence sand at depth - water should flow deep enough not affecting slope stability

Hypotheses Tested Ho: There is no correlation between soil and broccoli inflorescence chemical composition in composted vs. uncomposted Indianola soil Ha: There is a correlation Ho: There is no difference between composted and uncomposted soil properties (e.g. CEC) Ha: There is a difference

Larger values indicate significance at 0.05 level

Ca in Broccoli Descriptive Statistics Dependent Variable: plant ca TREATMENMeanStd. DeviationN com soil Total H0: There is no difference in mean plant Ca by soil type HA: Mean plant Ca is different Therefore fail to reject Ho and conclude mean plant Ca does not vary by treatment

CEC vs. NH4+ Ho: CEC is not correlated with ammonium availability Ha: There is a correlation Therefore reject Ho and conclude there is a correlation

Conclusion A higher sample size is needed for better accuracy (outliers increase standard deviation) There were significant results for some of the properties and chemicals tested (see table)