Proterra Maize

For undersowing in maize

  • Provides a well-established green manure crop after maize harvest.
  • Contains speciaally selected grasses.
  • Sown directly or shortly after maize.
  • Develops well, but slowly, under shade.
  • Tolerant to serveral herbicides.
  • improves soil fertility and soil structure by intensive rooting.
  • Sown after harvest
  • Sown into maize crop
  • Sown into cereal crop
  • Sown into vegetable crop

Improves soil fertility and structure by intensive rooting

During summer Proterra Maize develops slowly under the maize crop. The strong grasses tolerate shade and are drought-resistant. Shortly before the maize is ready to harvest its growth increases, as more light penetrates through the maize crop. Directly after harvesting the maize, a well-established green manure grass covers the field. Proterra Maize produces roots up to 90 cm deep, which is excellent for soil structure. It produces a lot of organic matter which is ideal for soil fertility. Proterra Maize prevents leaching of nutrients and forms a perfect green manure for the following crop.


Contains specially selected grasses

The grass species and varieties used in Proterra Maize are specially selected for developing under a cover crop without competing with the maize. They grow well but slowly under the shade of the large maize plants. During periods when the maize needs all its energy for starch formation, the growth of Proterra Maize is temporarily restricted to avoid competition.


Sown directly or shortly after maize

It is important to sow Proterra Maize directly or shortly (within 7 days) after sowing maize. At this time the soil usually contains enough moisture. By sowing in the same period, the Proterra Maize will be well-established at the time of herbicide treatment. If it is sown too late there’s a risk of failure due to drought. Sowing can be done in different ways:

  • With a special grass-sowing unit on the maize sowing machine, sowing directly with maize.
  • With a grass sowing machine or harrow/sowing unit in the week before or after maize has been sown.


Tolerant to herbicides

Extensive trials by independent institutes* prove that Proterra Maize is tolerant to many herbicide treatments. Weeds and weed grasses can be tackled, whereas the green manure crop will survive. The herbicide slows down the growth of Proterra Maize, the main advantage

of which is that it doesn’t compete with maize. Ask your local supplier for the recommended herbicide mixes to use on Proterra Maize.


Agro Research International BV, The Netherlands, 2011+2012.

Gent University, Belgium, 2014.

Knowledge Centre for Agriculture, Denmark, 2014.


Organic matter production
Nematode resistance
Root penetration in soil
Suitable for late sowing
Great germination / land cover
Frost sensitive
Green manure grasses

Grasses are highly valued as green manure crop, primarily because they form extensive root systems. This enables them to supply large quantities of organic matter to the soil, while their roots simultaneously improve soil structure.