Systems of differential fertilizer № 1 – Green Seeker


Yesterday’s Science Fiction – Today’s Science Fact!


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  Manage your Nitrogen and Maximize your Profits!


There is a better way to manage nitrogen: the GreenSeeker RT200. Our technology allows you to apply the right amount, in the right place, at the right time in real time. Increasing of profits – up to 70%.

The GreenSeeker RT200 allows on-the-go zone management of top/side dress nitrogen. It “talks” to the plant instead of the soil… effectively giving the plant a physical. It verifies the amount of the nitrogen the soil has made available in season, then writes a nitrogen prescription for the sprayer or spreader to deliver. This helps eliminate costly excess application. The RT200 can deliver improved yield, lower nitrogen cost and increase profits!

The GreenSeeker RT200 real time integrated optical sensing and application system measures crop status and variably applies the crop’s nitrogen requirements. It predicts yield potential for the crop using the agronomic vegetative index NDVI. The nitrogen recommendation is based on in-season yield potential and the responsiveness of the crop to additional nitrogen.

Numerous NDVI readings are averaged across each zone. A prescription is written. The controller modifies the rate for each ensuing zone. The RT200 works with most variable rate controllers and delivery systems. The sensors can be mounted on booms of various configurations on most sprayers/spreaders. The RT200 allows application of UAN, UREA and NH3 fertilizers. The retrofit is quick and easy.

The system GreenSeeker RT200 is equipped with modern field computer Trimble FMX that supports all Trimble available for the agriculture sector. Establishing a system GreenSeeker RT200 you get system parallel driving, which can be set three modes of control accuracy VBS, HP/XP, RTK. Trimble FMX – is:

1) High moisture dustproof field computer with touch screen high-resolution  and intuitiv user interface.

2) Multi-function device which can be connected  to the autopilot or system EZ-Steer, EZ-Pilot.

3) Use the GreenSeeker RT200 you will be able to make the planned rate fertilizer on GPS coordinates.

4) To the computer can be connected sensor yields, collect and process data on the harvest, the number of treated area, fertilization. Make map biomass and map distibution of nitrogen in the field.

The GreenSeeker RT200 technology is similar to satellite or aerial imagery zone management programs. Similar resolution but in real time-operating night or day; ignoring fog and clouds. And most importantly, no need for application maps or agronomist recommendations.

Use the GreenSeeker RT200 to spray in a complete set of 6 sensors.

 In complete GreenSeeker RT200 to the spreader is recommended to use 4 sensors.

The system of differential fertilizer GreenSeeker mounted on a tractor or self-propelled machinery of domestic or foreign-equipped electronic control management application.

The GreenSeeker® RT200 allows on-the-go zone management of top/side dress nitrogen. Here’s how:

  • Sensor scans the crop using LED lights.

  • Optically senses crop’s health using vegetative index.

  • Predicts yield potential.

  • Prescribes optimum zone nitrogen rate.

  • Delivers variable rate application.

  • Zone size – 1/4 to 1/2 acre (dependent on speed and controller).

  • Utilizes existing controller and plumbing.

  • Can apply UAN, UREA and NH3.

GreenSeeker RT200 allows you to make fertilizer for the following crops:

 Winter wheat

– Spring wheat

– Barley



– Corn

– Sunflower

 Sugar beets

– Potatoes

– Cotton


The GreenSeeker RT200 takes numerous NDVI readings, which are averaged across each zone. A rate is calculated and sent to the rate controller. The controller modifies the rate for each ensuing zone. The result: Maximized profits!

An average profit improvement of $8 per acre. Boosts crop yield while reducing excess application.

Cost effective – short payback period.

Real time on-the-go Variable Rate Application. Advanced technology working for you, putting defoliant and plant growth regulator at the rates you need.

No application map necessary.

Day and night application.

Mapping capabilities (as applied/NDVI).

Environmentally friendly.

Easy installation/simple operation.

Installation example GreenSeeker tractor MTZ-82 with spreader Amazone

Potential Users:


University and private researchers

Crop advisors and consultants

Fertilizer dealers


Frequently asked questions:


What is the payback, and how long will it take to pay for the system?

This system has been proven to improve the grower’s bottom line by $8-$10 dollars per acre in spring and winter wheat. Use of the RT200 system in 2004 corn trials showed an average increase in profit of $18 per acre. This increases resulted from improved yield and/or reduced N expense. Payback is a function of the acres covered and how the system will be used. The payback period for a wheat grower farming 3000 acres with a 60-foot system is less than 2 years. . A custom applicator charging $3/acre more than the normal application charge can pay for a 90-foot system in less than two years if the machine covers 15,000 acres annually.

What does it mean “soil mineralization”, and how it affects the yield of crops, the work of GreenSeeker, and finally the profit?

1. Researchers have shown that “mineralization” (the soils ability to provide nitrogen) can be a major contributor to crop nitrogen needs. In some years mineralization supplies virtually 100% of the crops nitrogen needs.  Other years the mineralization process seems to stall and provides only a fraction of the crop needs.  By comparing a Nitrogen Rich Strip to the remainder of the field, we can tell to what extend soil is supplying the needed nitrogen and adjust the top dress rate accordingly.

2.  N can be supplied to the crop as a result of being left over from previous crop.  The GreenSeeker sensors can also recognize this and reduce  the recommended nitrogen rates, (or add more if the unused N leached away).

3.   GreenSeeker rates also adjust for seasonal yield potential which can be predicted by combining  sensor NDVI data with Growing degree data.

4.   Last, GreenSeeker improves profitability by treating the variable needs of the field and not just applying one flat rate for the various needs that exist in a field.

5.  The combination of all 4 of these factors commonly return $5-20/acre or $12-$48/hectare

Nitrogen is cheap and it is less costly to apply more N rather than investing in a variable rate application system. Why not continue to use pre-plant N?

Anhydrous ammonia is inexpensive, approximately $0.28/lb., and it is often considered appropriate to apply 100 lbs. of pre-plant N (wheat) and ignore the in season crop N needs. Pre-plant application of N is extremely inefficient (~33%). Prior to the 5 leaf stage, wheat’s N needs are small and high rate pre-plant application of N is potentially wasted because the crop will not use it. The unused portion of the N that remains in the soil is often lost before the crop is able to use it. This may result in N stress later in the growing season and, ultimately, yield losses.
The amount of N supplied by the soil is not well understood and unpredictable. The organic fraction of soil is a huge reservoir of N. In fact, 1% organic matter contains about 2,000 lbs. of N per acre. If the organic fraction of N is mineralized and made plant available, the need for supplemental N is reduced or precluded. The GreenSeeker® saves unnecessary expense by applying the optimum amount of N for the soil conditions, thus eliminating excess expense and alleviating environmental effects. The yield potential for any crop in a specific environment is not known until the season is underway. If N was applied to generate a 50 bushel wheat crop but only 27 bushels are harvested, what happens to the rest of the N? Will it be available for subsequent crops? Maybe, maybe not, depending on the environment. If the soil was able to support 24 of those 27 bushels, how much N is needed? If 20 lbs. of N would have generated the 27 bushel yield and 100 lbs. pre-plant was applied (hoping for a 50 bushel year), then the grower spent an unnecessary $12/acre by over-applying N. This example demonstrates how expensive excess application can be.
Why purchase this system?
The GreenSeeker® system maximizes your return on investment in nitrogen. If ideal growing conditions promise a high yield, enough N is applied to achieve that yield. If the environment will not support a large yield, nitrogen will not be wasted. Testing has proven that GreenSeeker® generates $8 to $10 average return per acre on winter or spring wheat, and an $18 per acre average for corn. This is based on higher yields and reduced N expense. Research and field data also indicates that some years the savings would be double these numbers. 
Placing a dollar figure on the environmental savings is difficult, but the impact that GreenSeeker® technology will have is immense. Pre-plant application of N is extremely inefficient (~33%), GreenSeeker® data suggests that over 50% nitrogen use efficiency is possible. Applying the correct amount of N, at the right place and at the right time will decrease excess application and alleviate ground and surface water contamination without reducing yield. GreenSeeker® technology can help ensure a better quality of life for growers, their families and the general population.