Land Preparation Techniques
What You’ll Learn
Start land preparation 2 to 4 weeks before planting so weeds and residues have time to decompose.
Raised beds on heavy clay soils improve drainage and protect your seedlings from waterlogging.
Add well-rotted manure during the second ploughing so nutrients land right in the root zone.
Timing Your Preparation
Start preparing your land 2 to 4 weeks before your target planting date. That window lets turned-under weeds and crop residues begin decomposing and releasing nutrients. Starting early also exposes soil-dwelling pests and weed seeds to sunlight and natural predators.
Primary and Secondary Ploughing
Your first ploughing should go deep — 20 to 30 cm — to break compacted layers and bury surface weeds. Follow with a shallow secondary ploughing or harrowing to create a fine, level seedbed. Two ploughings produce a much better tilth than a single deep pass.
Raised Beds and Levelling
If your soil is heavy clay and water pools after rain, raised beds are essential. Form beds 1 metre wide and 15 to 20 cm high with drainage furrows between them. On flatter land, careful levelling stops water collecting in low spots where it can drown young seedlings.
Incorporating Organic Matter
Apply 10 tonnes per hectare of well-rotted manure or compost and work it into the soil during secondary ploughing. This puts the nutrients exactly where young roots can reach them. Never use fresh manure at planting — it can burn roots and bring in weed seeds.