When contour lines and commercial spacing disagree

We're standing on an empty site at Kawa Tamu, gearing up for the coming planting season. Commercial coffee wants order: straight lines, consistent spacing. Try establishing that discipline in front of a bushy plot and it turns into a small saga of its own: ropes stuck in the vegetation, getting entangled when rolling up, and next morning discovering that cows have wandered through overnight and scattered the ropes you set the day before.

The right way in is to set a baseline oriented across the slope, then follow the contour from there. That's the sustainable-farming standard, protecting soil and improving water infiltration. For establishing exactly where a contour runs, A-frames have been promoted in farming manuals for decades: simple, locally made from three pieces of wood, with a weighted rope hanging from it to set out a perfectly level line.

So we tried it as it reads in the handbooks. And it exposed a real tension we hadn't fully reckoned with: strict commercial spacing calls for three metres between Robusta lines. Contour lines don't respect that. As a slope's angle and orientation shift, contours pull closer together in places and spread wider apart in others. No smoothing effort can solve this. Wider sections need an extra coffee line slotted in; narrower ones leave no room for one at all.

It's a strange thing, after years of recommending A-frames to smallholder farmers, to find on our own land that the textbook version of contour planting and the textbook version of commercial spacing don't fully agree with each other.

The result? Our first plot now has a zig-zag line that supposedly follows the contours but in practice looks like a total mess.