When one block carries more than one spacing
Mixed bed layouts are common on vegetable farms where a block has tighter rows for one crop and wider beds for another, or where the planting plan shifts part way through the same area. That calls for a laser weeding setup that can be matched to the bed width, crop height and row pattern before the unit goes into the field.
We use tractor-drawn laser weeding units with camera-guided weed detection and a trained operator on the machine. The system identifies weeds in the row zone and directs the laser at the growing point, while the tractor moves through the block at a field speed that depends on weed pressure, crop stage and bed pattern. It is suited to herbicide-free weed control in vegetables, with no soil disturbance from cultivation tines or hoe work.
- Suitable for mixed bed widths in the same block
- Works across repeated row spacings and transition zones
- Better suited to row crops than broad, open spacing
- Used where mechanical cultivation would risk crop damage
Row crops that suit this layout
This hire option is often used on onions, carrots, lettuce and brassicas, especially where the beds are laid out for different cultivars or staggered plantings. It also suits blocks where transplant and direct-seeded rows sit side by side, with each section needing careful timing because the crop canopy changes the working window.
The operator adjusts the pass to suit crop stage and weed stage. Younger weeds are easier to target cleanly, while larger weeds may need a slower pass or a follow-up visit. In practical terms, mixed layouts are about keeping the machine aligned to the crop, not forcing the crop to match the machine. That matters on farms where bed width can vary from one section to the next by enough to change the guidance pattern.
- Onions in varied bed patterns
- Carrots in blocks with changing row centres
- Lettuce with split plantings and mixed spans
- Brassicas in successive plantings across one block
What the hire setup includes
Our mixed bed layout service is arranged as a contract field programme, with the unit, operator and travel coordination planned around your planting map. The tractor-drawn laser unit is set up to work across defined row spacing, and the operator keeps the run steady through bed transitions, headlands and uneven sections where a standard pass would be less reliable.
Where required, we can plan trial strip runs before the main block is treated. That helps confirm how the guidance tracks the crop line and how the unit handles your exact spacing. Field scheduling can be built around one farm or a multi farm programme, which is useful for growers working across Philippi, Ceres, Grabouw, Tzaneen, Bela-Bela, Nelspruit, Howick and Bethlehem. The same type of planning also helps on coastal sites where humidity can change weed growth pace and where a narrow timing window matters more than the calendar.
- Operator supplied for the field visit
- Travel coordination for single sites or multiple farms
- Trial strip runs where layout is unusual
- Repeat pass planning for mixed emergence
Bed width, spacing and field speed
There is no single speed that suits every mixed layout. Field speed depends on weed pressure, row consistency, crop size and how tight the spacing becomes at the narrowest point. Where the block has sharp transitions between bed widths, the run may need more care through the changeover zone than on the straighter stretches.
For ordering, the important measurements are the bed width, row spacing, inter-row distance and the crop stage in each section. If the field has terraces, headlands or irregular turning space, those details also matter because they affect setup and pass planning. A mixed layout can still be a straightforward hire, but only if the pattern is clear before the unit arrives at the field edge.
- Bed width in millimetres or metres
- Row centre spacing for each crop section
- Crop height and stage at the time of treatment
- Any narrow gateways, corners or turnaround limits
Care of the field before the unit enters
Mixed bed work needs a tidy field edge and a clear picture of where each spacing changes. Keep the block map handy, mark any dead rows, missing plants or problem patches, and note where irrigation lines, mulch edges or soft ground may affect travel. The laser unit works best when the operator can follow the planned row line without guessing through the transition points.
After a pass, avoid driving across the treated rows unless the block plan calls for it. If the crop needs a second run, the repeat pass should be timed around the weed stage and the crop stage together. In practical terms, good care means fewer surprises at the next visit and cleaner planning for the following section of the season.
- Share the block map before scheduling
- Mark mixed-width sections clearly
- Flag soft patches and restricted turn areas
- Keep the crop row line visible where possible
Details to confirm before booking the block
To quote and schedule mixed bed layouts properly, we need the crop type, the row spacing pattern, the bed width in each section and the field size. It also helps to know whether the block is one clean rectangle or a set of linked pieces, because travel and turnaround time change the way the programme is planned.
Please include whether you want a single visit, a repeat pass plan or a season booking, plus the farm location and any section that needs arrival site checks. If more than one crop sits in the same block, note where each one starts and ends. That gives the scheduling team enough detail to place the right operator and plan the run around the actual field layout, not an assumed one.
- Crop type and growth stage
- Bed width and row spacing by section
- Field location and access details
- Single pass, repeat pass or season booking
