Description

Lettuce is a long day plant. For vegetative growth, it needs a lower light intensity (4-5 thousand luminous), and can withstand early shading at the beginning of vegetation. In long day conditions, correlated with a high intensity of light, it can form floral stems before forming normal skins, depending on the sown variety.

Lettuce is also pretentious with respect to soil. It prefers medium soils rich in humus and pH value of 6-7.2. It does not grow well on poor, light or too heavy soils, or on acidic soil.

Last but not least, protection against extreme temperatures and the effects of winter frost on lettuce crops is important. The harvesting is done manually by cutting the head of the lettuce at the ground. At 1,000 sq. M. Of culture, 20,000-25,000 heads can be obtained.