Lettuce can be grown on a wide range of soil types, depending on irrigation, drainage, and local climatic conditions. A lettuce crop will also remove about 12–17kg of phosphorous and 130–220kg of potassium per ha. IrrigationKeep ground moist to ensure even and rapid growth, otherwise lettuce may become bitter or flower prematurely. Controlled by rouging, avoid excess watering, ensure proper drainage, avoid lettuce related crops in the neighbourhood and use certified seeds. Control: Crop rotation, rouging, good drainage, use certified seeds and fungicides.

Source: Daily Nation April 21, 2017 16:52 UTC