TAILIEUCHUNG - Lettuce & Green-Leaf Crops

The purpose of irrigation is to prevent water stress, especially during the formation of the part of the plant that will be harvested. Water stress can occur in a crop when the soil moisture is excessive or when it’s deficient. When oxygen concentration levels in the soil atmosphere are lowered due to displacement by water for an extended period of time, the root system can be severely damaged. Lettuce and green-leaf plants are especially susceptible to water stress due to their shallow root systems. Water stress can lead to two main problems: Poor yields and poor product quality (in terms of • firmness,. | Green-Leaf Crops NAANDANJAIN Irrigation ABOUT LETTUCE AND GREEN-LEAF CROPS Lettuce is one of the most common crops grown in many areas and in a variety of species. Lettuce like other green-leaf crops is characterized by a shallow root system that requires a strict irrigation regime and control. Moisture management throughout the growing season is a critical factor for the production of commercial quality lettuce and green-leaves. Even relatively short periods of inadequate soil moisture can adversely affect the crop. Lettuce yields can reach up to 50-70 tons hectare depending on the species number of growth cycles and soil conditions. Duration of growth on soil in the autumn 60-90 days in the summer 21-30 days. NAANDANJAIN Ltd. 08 201 I CLIMATE The lettuce plant is best suited to a moderate climate with temperatures of 13-16 C . During germination temperatures of 7-24 C are required. Short days are ideal for growing lettuce. Days lasting longer than 12 hours cause the lettuce to bloom. SOIL Neutral light soil pH-7 or acidic soil characteristics are preferable but commercial yields can also be achieved in heavy soil conditions. The lettuce is sensitive to cold and salinity. Water with an EC of or less should be used for irrigation. IRRIGATION OF LETTUCE AND GREENLEAF CROPS The purpose of irrigation is to prevent water stress especially during the formation of the part of the plant that will be harvested. Water stress can occur in a crop when the soil moisture is excessive or when it s deficient. When oxygen concentration levels in the soil atmosphere are lowered due to displacement by water for an extended period of time the root system can be severely damaged. Lettuce and green-leaf plants are especially susceptible to water stress due to their shallow root systems. Water stress can lead to two main problems Poor yields and poor product quality in terms of firmness head size and color due to damage caused to the head lettuce. Rot at the base of the roots. .

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