A brainy New Zealand opener idea

It's interesting how seeding systems evolve differently in other parts of the world. Most air seeders built in Western Canada, regardless of brand, are variations of a common style. European seeding tools look nothing like ours. The corn-soy belt relies on planters with systems for seed singulation that just aren't available on our small-grain seeders. And then there's the Cross Slot direct-seeding opener from New Zealand, which puts seed and fertilizer on the same plane but in separated bands, or slots. See the image. This idea has been around for 30 years or so, but hasn't caught on here — even though it seems well suited.

I read about the Cross Slot system in May 2009 "Innovator" newsletter from Alberta's AgTech Centre. In the article, AgTech manager Lawrence Papworth says Cross Slot openers are worth keeping an eye on. “Cross Slot openers replace residue over the slot and trap moisture in the slot. This helps assist germination even in very dry soils,” he says. “I have heard great things about the technology and am not sure why it hasn’t caught on.”

I went to the company website to find out more. Here are two questions and answers from the FAQ booklet, which you can download from the site:

Question: What is the significance of Cross Slot creating horizontal slots?

Answer: Vertical, and even slanted slots are very difficult to close, especially in damp soils. With horizontal slots the seed is tucked under a horizontal flap of soil at the time that the slot is created, ensuring the seed is always covered.

Question: Do horizontal slots have any other advantages?

Answer: Yes, several. They ensure that the seed micro-environment can be controlled almost regardless of soil conditions, and they permit fertilizer to be placed in bands that are separated horizontally from the seed.

By the looks of it, the opener units can mount on pretty much any toolbar, including large Prairie-sized air delivery systems. The company has tried selling these in Canada, but I haven't found anyone who has one. Do you know of anyone? Please email and let me know.