Developing variable rate strategies to ameliorate surface soil constraints: are there any relationships between NDVI, yield and surface soil properties?

Variable Rate solutions are being used to enable targeted amelioration of surface soil, with Grid Soil Sampling being a proven strategy. Concurrently, satellite imagery is more frequently being used to define management zones for soil sampling and the development of variable rate solutions. This thesis investigated the relationship between NDVI, yield, and surface soil properties in central NSW. The project found there was no consistency in the correlation between different soil properties, NDVI and yield data. NDVI was found to be inconsistent across years for the same paddock. When paddocks were divided into high, medium and low zones based on multi-year NDVI, in over 90% of paddocks there was no relationship between NDVI zones and identified soil constraints.