Effect of Organic Fertilizer And Em1on Growth And Yield of Two Lettuce Cultivars (lactuca Sativa L.) on Greenhouse Conditions

The study was conducted to observed the effects of Organic fertilizer and EM1on growth yield two lettuce cultivars in greenhouse conditions during 2011 growing season. experiment performed by Randomized Complete Block Design (RCBD) consisted four levels EM1 (0, 500, 1000, 1500) ml.l-1, (without with fertilizer) (Syrian Local cv.). results showed that cultivar Syrian significantly increased plant height (cm), leaves number plant-1, head circumference (cm) while cv. stem length chlorophyll% dry weight (g). (kg) total (t.ha-1). at concentration 1500 ml.l-1 increased, (g), interactions among three factors caused positive significant differences all vegetative characteristics