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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 Compostedand Uncomposted Indianola Soilto Chemical Compositionof Broccoli Inflorescences By Christopher Licata & B. Adams
Model • Randomized split-block design with one replicate • Two treatments (composted vs. unamended) • 4 reps per treatment
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
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
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
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)