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Jan 2008 www.GeoAgris.com. Goals www.GeoAgris.com Test AgroFresh product under real field conditions Use PA (Precision Agriculture) to Increase operation.

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Presentation on theme: "Jan 2008 www.GeoAgris.com. Goals www.GeoAgris.com Test AgroFresh product under real field conditions Use PA (Precision Agriculture) to Increase operation."— Presentation transcript:

1 Jan 2008

2 Goals Test AgroFresh product under real field conditions Use PA (Precision Agriculture) to Increase operation capacity by getting data automatically Filter noise by taking into account field spatial heterogeneity Get yield response information from different stress conditions (environments) within the same paddock

3 Background Typical Strip design Applied Not Applied

4 Background Typical Strip Design Paddock

5 Background Without PA technology: -strip result may be influenced by spatial heterogeneity (noise) -different responses under different stress conditions may be hidden because strip yield result is the average of different stress conditions along strip PA can: -Filter spatial heterogeneity noise -Obtain yield response information for different stress conditions

6 Methods Paddock selection Spatial Heterogeneity Analysis with previous years data Strip design crossing (perpendicular to) heterogeneity limits Product application and application control Combine calibration Harvest and combine control Data Analysis

7 Methods Paddock selection

8 Results La Gambeta Trigo

9 Results Calibration Trial Harvest Max Error: 1 % combine yield monitor vs. standard scale

10 Results La Gambeta Trigo (QQ/ha)

11 Results Analysis by environments of different yield potential levels

12 Results Analysis by environments of different yield potential levels Agregar cuadro con el rendimiento promedio de cada ambiente Trial Sensibility: 2.3 QQ/ha (3.5% yield) n = 5 significance level α = 0.05 (β=0.5)

13 Results Four field results (QQ/ha)

14 Results Sensitivity for α = 0.05 and β=0.5 if 4 repetitions and product effect is 4 QQ/ha then we will obtain 0.05 pvalue in 50% of the trials (the worst case)


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