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Development of Vegetation Indices for Identifying Insect Infestations in Soybean

^a Dep. of Agronomy and Environmental Management, Rm. 104 Sturgis Hall, Louisiana State Univ. Agricultural Center, Baton Rouge, LA 70803
^b Dep. of Biological and Agricultural Engineering, 148 Seaton Hall, Kansas State Univ., Manhattan, KS 66506
^c Center for Geoinformatics, Louisiana State Univ., Baton Rouge, LA 70803
^d Dep. of Entomology, Rm. 402 Life Sciences Bldg., Louisiana State Univ. Agricultural Center, Baton Rouge, LA 70803

View larger version (14K): [in this window] [in a new window]   Fig. 1. Relationships for leaf area index (LAI) regressed on normalized difference vegetation index (NDVI), 2004 and 2005.

View larger version (20K): [in this window] [in a new window]   Fig. 2. Relationships for light interception regressed on normalized difference vegetation index (NDVI), 2004 and 2005.

View larger version (16K): [in this window] [in a new window]   Fig. 3. Relationships for leaf area index (LAI) regressed on green normalized difference vegetation index (GNDVI), 2004 and 2005.

View larger version (22K): [in this window] [in a new window]   Fig. 4. Relationships for light interception regressed on the green normalized difference vegetation index (GNDVI), 2004 and 2005.

View larger version (15K): [in this window] [in a new window]   Fig. 5. Relationships for leaf area index (LAI) regressed on the simple ratio (SR), 2004 and 2005.

View larger version (22K): [in this window] [in a new window]   Fig. 6. Relationships for light interception regressed on the simple ratio (SR), 2004 and 2005.