Interow Mix

Beneficial mix for vineyards, orchards and plantations

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A specially formulated blend of perennial grasses, Saia oats, tillage radish, legumes, and subterranean and aerial seeded clovers that provides excellent ground cover suppressing weeds, bulk for mulching and quick growth to reduce erosion, and attracts beneficial insects, especially bees. Interow increases the retention of nutrients through increased levels of organic biomass, while its legumes provide an important source of nitrogen. A great mix to consider for regenerative or cover cropping. Biological BioNPK Powder S coated.

Key attributes

  • Proven in WA vineyards and orchards
  • Excellent ground cover that suppresses weeds
  • Quick growth to reduce erosion
  • Attracts beneficial insects, especially bees
  • Legumes supply nitrogen and biomass retains nutrients
  • Regenerates if allowed to go to seed in spring

Mix components

Formulation 2023

Component
High quality, high yielding and long growing season, with excellent vigour and high stress and disease tolerance. Can extend vegetative production into late spring where managed appropriately with sufficient moisture and nutrition.
Avalon Perennial Ryegrass
A very persistent and densely tillered perennial ryegrass that produces well through the winter and into late spring.
A very prolific seeder that is early maturing and therefore produces well in the winter.
An excellent cover crop to help break up compaction layers in the soil. Being deeply rooted it relocates nutrients further down the soil profile and brings them back to the surface when it decomposes.
Very fast establishment with a lot of bulk production from autumn through to spring. Produces high levels of biomass and is an excellent producer of organic matter and carbon, with an extensive root system.
Very palatable and nutritious, with the added benefit of nitrogen fixation. Flowers earlier than the companion Arrowleaf clover, giving a good spread of production and flowering over the season.
A highly productive, deep rooted clover with excellent production in late spring/early summer. Flowers later than the companion Crimson clover and performs well in acid sands.
Produces across a wide range of soils in pasture and vineyard systems.
An annual sub clover that, moisture depending, can produce very late into the season and is highly productive.

*Occasionally some varieties in our mix will be replaced with a like-for-like variety where the original is not available or not easily accessible. Varieties in the mix will be specified on the bag label.

About this seed blend

Interow Mix is a blend of perennial and annual ryegrasses, Saia oats, tillage radish and various clovers that are suited to a range of soil types and management systems throughout Western Australia. It is a very versatile mix and has been successfully used in vineyards and orchards, as a cover crop, and is an excellent regenerative mix if allowed to go to seed in spring.

Interow Mix is designed to provide a good balance of cover growth over the year, attract beneficial insects to assist in controlling insect pests, improve soil structure and aid with waterlogging. It can be cut for mulching, though this may affect seed set for regeneration the following year if cut before seed set.

Biological BioNPK S coated. ECOCERT approved.

Planting & grazing notes

Optimal sowing time is autumn to winter. Have a soil test done, ideally spray out any existing pasture or persistent weeds before planting, and prepare an optimal seed bed. Ensure adequate soil moisture with the possibility of follow up rain and choose a sowing method that gives good seed to soil contact. Higher sowing rates increase interplant and weed competition, helping reduce the weed burden and the need for early herbicide applications. After sowing, either leave to stand as a cover crop to improve soil health and attract beneficial insects, cut for mulch, or graze.

Stand life

Regenerates if allowed to go to seed in spring. Cutting for mulch before seed set may affect regeneration the following year.

How it's sold

FormPackStatus
BioNPK-S coated25 kgIn stock
Interow Mix — galleryInterow Mix

FAQs

What should I sow between the rows in my vineyard to control weeds and erosion?

We recommend our Interow Mix, blended for vineyards, orchards and plantations. It combines perennial and annual ryegrasses, Saia Oats, Buster Tillage Radish and sub and aerial clovers to give excellent ground cover, suppress weeds and reduce erosion. It suits sandy to heavy soils with pH 5.0+ in 500mm+ rainfall areas.

What cover crop attracts bees and beneficial insects into an orchard?

Our Interow Mix is designed to attract beneficial insects, especially bees, which helps with insect pest control. Its flowering clovers, such as Arrowleaf and Crimson, support this. The mix also builds organic matter and adds nitrogen through its legumes, and flowers at roughly August to November.

How much cover crop seed per hectare for vineyard mid-rows?

For our Interow Mix we recommend 25 to 35 kg/ha, sown in autumn or winter. Spray out existing pasture and persistent weeds first, prepare a good seedbed and fertilise to help establishment. It needs 500mm+ rainfall and pH 5.0+. Sowing into a firm, clean seedbed gives the most even establishment between rows.

Our vineyard inter-rows get waterlogged in winter. What cover crop helps?

Our Interow Mix is designed to help with waterlogging and improve soil structure. Tillage radish opens up the soil with its deep taproot, while the ryegrasses and clovers build organic matter. It suits sandy to heavy soils in 500mm+ rainfall areas like the South West.

Will mowing my inter-row cover crop stop it coming back next year?

It can. Our Interow Mix regenerates if allowed to set seed in spring, so cutting for mulch before seed set may reduce regeneration the following year. We recommend timing mowing after the clovers and ryegrass have set seed where you want the sward to return.

What's a good regenerative cover crop for an avocado or citrus orchard in the South West?

We recommend our Interow Mix for orchards and plantations. It gives excellent ground cover, weed suppression, bulk for mulching and nitrogen from its legumes, and is an excellent regenerative mix if allowed to go to seed in spring. It is coated with biological BioNPK Powder S, is ECOCERT approved and suits 500mm+ rainfall on sandy to heavy soils with pH 5.0+.

How can I get mulch from my own inter-rows instead of buying it in?

Grow it. Our Interow Mix produces bulk for mulching from Saia Oats, ryegrasses and clovers, and increases nutrient retention through organic biomass. Cut it and throw the residue under vines or trees, keeping in mind that cutting before seed set may reduce regeneration next year.

What's in Interow Mix?

Interow Mix is a blend of perennial and annual ryegrasses, including AusVic Perennial Ryegrass and Abundant Tetraploid Annual Ryegrass, plus Saia Oats, Buster Tillage Radish, Riverina Subterranean Clover, Leura Subterranean Clover, Arrowleaf Clover and Crimson Clover. The blend has changed over time, so check the bag label for exact varieties. It is coated with biological BioNPK Powder S and is ECOCERT approved.

Can I graze Interow Mix?

Yes, Interow Mix can be grazed as well as left as a cover crop or cut for mulch. In vineyards and orchards, check chemical withholding periods and tree or vine damage risks before running stock. Rotational grazing helps the ryegrass and clovers recover and set seed.

Interow Mix vs Nitro Mix for a vineyard?

Interow Mix is a grass, oat, radish and clover blend for ground cover, weed suppression and mulch in vineyards and orchards. NITROMIX is all legumes, sown at 5 to 10 kg/ha, and focused on building soil nitrogen, structure and fertility. We recommend Interow Mix for more bulk and cover, and NITROMIX for a legume-only nitrogen boost.