Queensland Drones now provides precision electromagnetic (EM/EC) soil zone mapping for even greater efficiency in farm and crop management. Using the state-of-the-art EM38 Mk2 ground-based electromagnetic profiler, we can help you to identify and accurately map the key management zones for your farm, based on how well the soil will hold water, its salt content and how it will respond to fertilisers and other crop inputs. Accurate soil conductivity data can help you to better manage fertilisers, irrigation and yield.
Different soil types (sand, loam, clay, etc) will conduct electromagnetic energy differently, so using the right equipment it’s quite simple to map the different soil types, at different depths, across a field or an entire farm. Soil conductivity is an excellent proxy for soil fertility, measuring how well the soil can retain water between rainfall or irrigation periods and how well the soil will absorb, retain and deliver key nutrients like nitrogen (K), potassium (P) and Magnesium (Mg) to the crop as it grows. EM soil conductivity mapping has been shown in numerous studies to be a reliably proxy for yield estimates in most soil types.
EM soil profiling allows you to limit expensive and complex soil testing to single sample points in each soil management zone, with sample point results able to be reliably interpolated to the entire management zone (zones of similar conductivity) and map soil variability across a field or an entire farm.
The results of soil sampling and soil zone mapping can be developed into highly accurate variable rate prescription maps for application of fertilisers and irrigation based on each field’s unique soil profile characteristics and nutrition requirements. This is money that stays firmly in your pocket.
EC zone mapping not only saves on input costs, it also saves you time because it enables you to more efficiently manage each zone of your farm for maximum efficiency and yield.
EC zone mapping is an investment in future productivity, because it typically only needs to be done once – unlike traditional soil testing which needs to be repeated every 2-3 years. Your investment in EC zone mapping lasts for the life of your farm.
Our electromagnetic soil profiling data can help to determine:
- Water retention capacity and drainage characteristics of each field – how soil zones absorb water and deal with excess water. Because water retention typically has the most significant major impact on crop yield, this alone should justify the investment in EC zone mapping.
- Cation Exchange Capacity (CEC) of each field – how well the soil can absorb, retain and release essential crop nutrients like fertilisers.
- Depth and profile of top soil for each field – identifying how deep the top soil goes before it reaches clay layers and rock outcrops.
Using this data, variable rate prescription maps can be developed to identify:
- Variable seeding and nitrogen spreading rates based on CEC and yield targets
- Variable tillage and seeding rates based on depth of top soil layer
- Variable herbicide application rates based on CEC, soil texture and organic content
- Variable lime application rates based on CEC levels and EC zones
- Variable gypsum application rates based on soil sodic zones
- No-till planting zones and seeding exclusion zones
If you would like to find out more about EM soil profiling for your property, please complete the enquiry form below or phone Tony on 0439 383202 for an obligation-free chat.