Machinery Focus: Video – real time silage analysis from John Deere

John Deere, like all mainstream manufacturers, is investing heavily in digital technology and proudly markets its electronic wares as being of great benefit to the farmer.

All the major companies will have a multitude of systems to aid, not only the operation of the tractor in the field, but also the handling of data generated by machinery and its management back in the farm office.

Despite all the hype the question still remains as to just how much of it is useful and how much of it actually gets used?

Contractor convinced of the benefits

In 2019. Michael Barrett, dairy farmer and contractor of Newcastle West, purchased a John Deere 8500i self propelled forage harvester form Geary’s Garage, Co. Limerick.

One of the chief attractions being that it was fitted with the company’s HarvestLab 3000 nutrient sensor.

Micahel Barrett from Newcastle West
Michael Barrett runs a contracting business alongside the family dairy farm

This device sits on the delivery chute and analyses the grass as it passes out of the chopping unit and into the trailer.

It is capable of measuring moisture, dry matter, protein, starch, neutral detergent fibre and sugar levels.

All these measurements are constant and are recorded in real time, leading to a stream of data which can trace the silage quality back to, not only the field, but the general area within that field.

John Deere HarvestLab 3000 sits at the base of the the delivery chute
The HarvestLab analysis unit is mounted towards the base of the chute

At this point it is worth noting that although the system is highly accurate, the actual area the data can be pinned down to, depends on the mowing and swathing operations that preceded the harvesting.

The larger the mower and/or rake, then the larger the area any single piece of data refers to.

This will naturally reduce the potential accuracy of precision application of inputs.

John Deere harvester on sheep paddocks
Crop conditions can vary enormously. Just 42% moisture was being recorded on this sheep paddock

Other than this drawback, the potential benefits of having both an analysis of grass yield and quality in real time, as well as being mapped for future reference, are tremendous, according to Michael, who has become a keen advocate of data generation and analysis.

Immediate availability of information

Agriland visited Michael as he was clearing away some second cut silage at the Salesian Agricultural College in Co. Limerick.

It was during fine weather and the fields had been mown two days beforehand.

Watching the data from HarvestLab, as it is displayed on the screen, gives a fascinating insight into what is actually being harvested. A view that was not available up until the advent of this technology.

HarvestLab screen
The HarvestLab screen shows the nutrient analysis in real time as the harvester works through the crop

The screen displays the results in real time while simultaneously uploading them to the tractor company’s own cloud.

Michael may then access them in his own time via his ‘My John Deere’ account, or share them directly with his customers.

John Deere helps plan ahead

Moisture content is obviously the major parameter and will dictate the need, or otherwise, for a silage additive.

On the day, this varied between 82% and 41% in the fields being cut, the former was silage ground while the latter was sheep paddocks.

Pit silage at Salesian College
Knowing the quantity and quality of the grass at ensilage eliminates the need for later measurement and analysis

The amount of water being carried back to the pit will also be of interest, but it is only one factor in projected silage quality and quantity.

The energy, protein and fibre levels are just as important in determining the final feed value and the HarvestLab system can give an average for the whole crop, not just the small sample that may be collected for analysis in the autumn.

Having access to both the quality and quantity of available silage several months earlier than normal, can greatly help with planning winter feeding and stocking levels.

Not all grass is equal

There is, apparently, a huge variation in quality and quantity across the farms that Michael works on.

The college fields, unsurprisingly, are well up with the better ones, but others may lack the desirable qualities recorded here.

Sheep paddock inputs
Thin pickings on a sheep paddock

The college grounds are treated uniformly and all receive much the same in the way of inputs.

However, that is likely to change as the results of the HarvestLab and yield maps accumulate to give a clearer idea of what is happening in the field.

Exploring the advantages

John Flannery, vice principle of the college, is a keen advocate of the new information that is becoming available.

In addition to the ability to plan winter feeding well ahead of the season, the college is now starting to vary its application rates for fertiliser according to yield.

Other management decisions, such as reseeds, will also be informed by the data.

A full, GPS-guided, soil analysis of the farm is taken every three years and he does not see this exercise being displaced.

It is more a matter of combining the two sets of information to better inform the management of the whole enterprise.

Mangement based on yeild and quality
The dairy fields were treated as one, but yield variations point to the potential of varying inputs

The college is also satisfied with the accuracy of the HarvestLab unit, having matched against its own near infra red (NIR) analytical tool and found it to give exactly the same results.

Bringing modern methods to students

Bringing the benefits of the latest technology to the attention of students is also an important aspect of its work.

Having a contractor equipped with such a demonstrably useful piece of digital technology helps get the message across.

While manufacturers broadcast the message that the new technology is here and will transform profitability overnight, at farm level, there is a slightly more cautious approach to adopting it.

Salesian college silage pit
Bringing home the crop more efficiently grown

This is not to say it is unwelcome or undesirable… far from it; it is more a question of finding what is useful among all that is now on offer and gradually integrating it into the farm enterprise.

At Salesian Agricultural College we see a growing partnership between a forward thinking contractor and a client dedicated to exploring and exploiting the new technologies, while passing on what it has found beneficial to the next generation of farmers.

This is, perhaps, the sort of connectivity which will prove to be more important than the actual devices and systems that enable it.