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The Relationship of Composted and Uncomposted Indianola Soil to Chemical Composition of Broccoli Inflorescences

The Relationship of Composted and Uncomposted Indianola Soil to Chemical Composition of Broccoli Inflorescences. By Christopher Licata & B. Adams. Model Randomized split-block design with one replicate Two treatments (composted vs. unamended) 4 reps per treatment.

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The Relationship of Composted and Uncomposted Indianola Soil to Chemical Composition of Broccoli Inflorescences

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  1. The Relationship of Compostedand Uncomposted Indianola Soilto Chemical Compositionof Broccoli Inflorescences By Christopher Licata & B. Adams

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

  3. Indianola Soil Seriesfrom 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

  4. 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

  5. Larger values indicate significance at 0.05 level

  6. Ca in Broccoli H0: There is no difference in mean plant Ca by soil type HA: Mean plant Ca is different Descriptive Statistics Dependent Variable: plant ca TREATMEN Mean Std. Deviation N com 3501 795.0 4 soil 4244 593.5 4 Total 3873 761.3 8 Therefore fail to reject Ho and conclude mean plant Ca does not vary by treatment

  7. 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

  8. 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)

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