Andrew Van Burgel

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Variance Variance Analysis – Treatment by Zone interaction (1) • Run effects cancel out ☺ • Calculate average yield in 20m cells in each strip • individual points are not independent • Variogram: 0.20 0.175 ~20m 0.150 0.15 0.125 0.100 0.10 0.075 0.05 0.050 0.025 0.00 0.000 0 50 100 150 200 250 0 10 20 30 40 50 Lag Distance Lag Distance
Analysis – Treatment by Zone interaction (2) • AOV • experimental unit – 20m cell means • blocking for adjacent cells • treatment = gypsum*zone • Case Study: Analysis of variance Variate: Yield Source of variation d.f. (m.v.) s.s. m.s. v.r. F pr. Block stratum Zone 1 5.42704 5.42704 103.82
Page 1 and 2: Analysis Issues in Precision Agricu
Page 3 and 4: Family Update • 2005 Thredbo - 1
Page 5 and 6: Farmer Friendly Experiments • Lar
Page 7 and 8: Case study Treatments: • 4 Gypsum
Page 9 and 10: Statistical Challange • Design:
Page 11 and 12: A clean run... End4 4:21pm30th 1min
Page 13 and 14: Already harvested patches End4 4:21
Page 15: Analysis - Treatment main effects
Page 19 and 20: Farmer advice • Use single harves

Andrew Van Burgel

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