🌾 Wheat

Grow wheat in a firm, fine seedbed on fertile, well-drained loam to clay soils with good structure and moderate organic matter content. Avoid waterlogged or compacted soils (improve drainage on heavy soils). Best performance is generally obtained on slightly acidic to neutral soils (around pH 6.0-7.5); correct high acidity/alkalinity and avoid highly saline soils wherever possible.

Sow wheat in a fine, firm, weed-free seedbed, with good contact between soil and seed. Broadcast (preferred) or broadcast and lightly incorporate, aiming for a sowing depth of around 2-3 cm; on lighter/drier soils, the depth can be slightly increased (up to ~4 cm), but avoid deep sowing as it delays emergence. Timing: sow winter wheat in autumn to get plants established before winter (to be adjusted locally to avoid excessive early growth and risk of disease); sow spring wheat as early in spring as soil conditions allow. Germination is optimal when soils are moist and not waterlogged; avoid sowing in saturated or compacted soil. Sowing density: adapt to variety, seed size, germination percentage, sowing date and intended establishment. As a guide, aim for around 250-350 viable seeds/m² for winter wheat (often more for late sowings or difficult seedbeds) and generally ~300-450 viable seeds/m² for spring wheat. Calibrate the drill for uniform distribution. Row spacing and placement: use typical cereal row spacing (approx. 12-20 cm) with uniform depth and consistent seed placement. After sowing, roll lightly if necessary to improve seed-soil contact and conserve moisture (avoid rolling very wet soils). Ensure adequate initial fertility according to soil analysis (especially phosphorus) and manage residues and weeds to reduce early competition.

Base fertilizer rates on soil analysis and a realistic yield target. Apply phosphorus and potassium mainly before sowing, in bands or incorporated at sowing, as wheat absorbs most of the P very early on; correct low soil P and K levels before or at sowing. Nitrogen is generally the main yield-limiting nutrient and is best split to reduce losses and lodging: apply a moderate amount at/near seeding (often 20-50% of total nitrogen), then top-dress the remainder in early spring, at green-up/first tillering for winter wheat, or at tillering for spring wheat; where possible, additional fractionation at junction/first stem elongation can improve efficiency and protein content. Avoid late nitrogen excess, which increases the risk of lodging and disease; use the growth stage calendar and rainfall/irrigation forecasts to minimize volatilization/denitrification losses (urease inhibitor or incorporation can help with surface-applied urea). Ensure there is sufficient sulfur in organic matter-poor or sandy soils (often applied at the same time as early nitrogen) and correct zinc deficiencies where they are common (seed treatment or Zn in soil/foliage). Maintain soil pH in the appropriate range for wheat (generally ~6.0-7.5) to optimize nutrient availability; incorporate manure/compost according to nutrient analysis to avoid excessive N or P inputs.